Vertiv Liebert® EXM 10-40 kVA UPS User Manual

Liebert® EXM UPS

User Manual

10kVA to 40kVA, 208/120V, 50/60Hz

Vertiv™ Liebert® EXM UPS User Manual

The information contained in this document is subject to change without notice and may not be suitable for all applications. While every precaution has been taken to ensure the accuracy and completeness of this document, Vertiv assumes no responsibility and disclaims all liability for damages result from use of this information or for any errors or omissions.

Refer to local regulations and building codes relating to the application, installation, and operation of this product. The consulting engineer, installer, and/or end user is responsible for compliance with all applicable laws and regulations relation to the application, installation, and operation of this product.

The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use, or disclosure of it without the written permission of Vertiv is strictly prohibited.

Names of companies and products are trademarks or registered trademarks of the respective companies. Any questions regarding usage of trademark names should be directed to the original manufacturer.

Technical Support Site

If you encounter any installation or operational issues with your product, check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures.

Visit https://www.vertiv.com/en-us/support/ for additional assistance.

Proprietary and Confidential ©2023 Vertiv Group Corp.

TABLE OF CONTENTS

1 Important Safety Instructions

2 Introduction

2.1 Operator Control and Display Panel

3 Installation

3.1 Initial Inspections

3.1.1 Storing the UPS and Batteries for Delayed Installation

3.2 Preliminary Checks

3.2.1 Identification

3.3 UPS Location

3.3.1 Positioning the UPS

3.3.2 Environmental considerations

3.4 Battery Location

3.5 Considerations in Moving the Liebert® EXM

3.6 Mechanical Considerations

3.6.1 Dimension

3.6.2 Clearances

3.6.3 Floor installation

3.6.4 Cable Entry

3.7 Auxiliary Cabinets

3.8 Power Module Assembly

3.9 Static Bypass Assembly

4 Electrical Connections-UPS

4.1 Power Cabling

4.1.1 Lug Size and Cable Rating

4.2 External Protective Devices

4.2.1 Rectifier and Bypass Input Supply of the UPS

4.2.2 UPS Output

4.2.3 UPS Input Configuration

4.2.4 UPS Input Configuration with Transformers

4.2.5 Cabling Guidelines

4.2.6 Cable Connections

4.2.7 Accessory Fuses and Back-Feed Breaker Wiring

4.2.8 Safety Ground

4.2.9 Protective Devices

4.2.10 Cabling Procedure

4.3 Control Cables Details

4.3.1 Static Bypass Assembly Features



16

17

19

12

13

15

16

16

12

12

12

12

12

11

11

12

20

21

32

33

33

28

30

31

23

23

25

26

26

21

21

22

22

9

11

9

1

i

Vertiv™ Liebert® EXM UPS User Manual ii

4.4 Dry Contacts

4.4.1 Input Dry Contacts

4.4.2 Output Dry Contacts

4.4.3 Vertiv™ Liebert® BDC Interface

4.4.4 Battery Cabinet Interface Connectors

4.4.5 EPO Input-Optional

4.5 Parallel Cable Connections

5 Installation Drawings

6 Option Installation

6.1 Vertiv™ Liebert® IntelliSlot Communication

6.2 Vertiv™ Liebert® IntelliSlot Web Card - SNMP/HTTP Network Interface Card

6.2.1 Vertiv™ Liebert® IntelliSlot Unity Cards - IS-UNITY-LIFE, IS-UNITY-S, IS-UNITY-DP

6.3 Vertiv™ Liebert® IntelliSlot Web Card-Optional

6.4 Liebert® IntelliSlot Relay Card

6.4.1 Vertiv™ Liebert® IntelliSlot Relay Card Pin Configuration

6.4.2 Vertiv™ Liebert® IntelliSlot Relay Card Jumper Setup

7 Operation

7.1 Touchscreen Control Panel

7.2 Access Level Log-In

7.3 Default PIN Numbers

7.4 Vertiv™ Liebert® EXM Operating Modes

7.5 UPS Startup

7.5.1 Startup Procedure

7.5.2 Startup in Eco Mode

7.5.3 Switching Between UPS Operation Modes

7.6 Switching the UPS from Normal Operation to Maintenance Bypass

7.7 Switching the UPS from Maintenance Bypass to Normal Operation

7.8 De-energize Vertiv™ Liebert® EXM with Maintenance Bypass Cabinet

7.9 De-energize Liebert® EXM Without Maintenance Bypass Cabinet

7.10 Parallel Operations - Determine Control Panel Firmware Version

7.11 Parallel Operations - Software Version 1.1

7.11.1 De-energize a Vertiv™ Liebert® EXM Parallel System - Software Version 1.1

7.11.2 Re-energize a Vertiv™ Liebert® EXM Parallel System - Software Version 1.1

7.12 Emergency Shutdown with EPO

7.13 Auto Restart

7.14 Reset After Shutdown for Emergency Stop (EPO Action) or Other Conditions

7.15 Battery Protection

7.15.1 Battery Undervoltage Warning

7.15.2 Battery End-of-Discharge (EOD) Protection

7.16 Operation


48

49

49

47

47

48

50

53

65

65

65

58

59

61

63

63

57

58

58

53

54

54

54

67

67

67

66

66

66

67

67

41

43

47

38

38

39

35

35

36

7.17 Static Bypass Switch

8 Specifications and Technical Data

8.1 Conformity and Standards

8.1.1 Energy Star Certification

8.2 UPS Environmental

8.3 UPS Electrical Characteristics

9 Maintenance

9.1 Safety Precautions

9.2 Battery Maintenance

9.3 Battery Safety Precautions

9.4 Limited-Life Components

9.5 Routine Maintenance

9.5.1 Record Log

9.5.2 Air Filters

9.5.3 Torque Requirements

9.6 Detecting Trouble

9.7 Reporting a Problem

9.8 Corrective Actions

9.9 Recommended Test Equipment

Appendices

Appendix A: Hazardous Substances

Appendix B: UPS Status Messages


83

85

85

87

79

79

80

80

82

75

76

77

82

82

82

68

69

69

69

69

70

75


iii


This page intentionally left blank iv Proprietary and Confidential ©2023 Vertiv Group Corp.


1 Important Safety Instructions

Save These Instructions

This manual contains important instructions that should be followed during installation of the Vertiv™ Liebert® EXM.

Read this manual thoroughly, paying special attention to the sections that apply to your installation, before working with the

UPS. Retain this manual for use by installing personnel.

A properly trained and qualified electrical contractor should oversee the installation of the equipment.

TheLiebert® EXM cannot be put into operation until it is commissioned by the manufacturer or authorized engineer.

Otherwise, human safety may be endangered and damage to the UPS will not be covered by the warranty.

TheLiebert® EXM is designed for commercial and industrial uses and cannot be used as life support equipment.

WARNING! Internal battery strapping must be verified prior to moving a battery cabinet (after initial installation).

Battery cabinets contain non-spillable batteries.

Keep units upright.

Do not stack.

Do not tilt.

Failure to heed this warning could result in smoke, fire or electric hazard. Call 800-543-2378 prior to moving battery cabinets (after initial installation).

WARNING! L’arrimage des batteries internes doit être vérifié avant de déplacer une armoire de batteries

(après l’installation initiale).

less armoires de batteries contiennent des batteries étanches.

Maintenir les systèmes à la verticale.

Ne pas empiler.

Ne pas incliner.

Le non-respect de ces consignes comporte des risques liés à la fumée, au feu ou à l’électricité. Composez le 1

800 LIEBERT avant de déplacer des armoires de batteries (après l’installation initiale).

1 Important Safety Instructions Proprietary and Confidential ©2023 Vertiv Group Corp.

1


WARNING! Risk of electrical shock and fire. It can cause damage to the equipment, personal injury or death.

The Lead-acid batteries contain hazardous materials. The Batteries must be handled, transported and recycled or discarded in accordance with federal, state and local regulations, Because lead is a toxic substance, lead-acid batteries must be recycled rather than discarded. Do not dispose of the battery or batteries in a fire. The battery may explode. Do not open or mutilate the battery or batteries. The Released electrolyte is harmful to the skin and eyes. It is toxic.

The following precautions must be observed when working on batteries:

Remove watches, rings and other metal objects.

Use tools with insulated handles.

Wear rubber gloves and boots.

Do not lay tools or metal parts on top of batteries.

Disconnect charging source prior to connecting or disconnecting the battery terminals.

Determine whether the battery is grounded. If it is grounded, remove source of ground.

Contact with any part of a grounded battery can result in electrical shock. The likelihood of such shock will be reduced, if such grounds are removed during installation and maintenance.

WARNING! Risque de décharge électrique et d’incendie. pouvant entraîner des dommages matériels, des blessures et même la mort. Les batteries au plomb-acide renferment des matières dangereuses. Les batteries doivent être manipulées, transportées, recyclées ou jetées conformément aux règlements fédéraux, provinciaux et municipaux. Étant donné que le plomb est une substance toxique, les batteries au plomb-acide doivent être recyclées plutôt que mises au rebut. Ne jetez jamais de batteries au feu car elles risquent d’exploser. Vous ne devez ni ouvrir ni percer les batteries, car l’électrolyte qui s'en écoulerait est nocif pour la peau et les yeux. Cet électrolyte est toxique. Lorsque vous travaillez avec des batteries, prenez les précautions suivantes :

Retirez montre, bagues et tout autre objet métallique.

Utilisez des outils dont le manche est isolé.

Portez des gants et des bottes de caoutchouc.

Ne posez aucun outil ni pièce métallique sur le dessus d’une batterie.

Déconnectez la source de chargement avant de brancher ou de débrancher les bornes d’une batterie.

Vérifiez si la batterie est mise à la terre. Le cas échéant, éliminez la cause de la mise à la terre.

Le contact avec toute partie d'une batterie mise à la terre peut provoquer une décharge électrique. Pour réduire de tels risques d'accident, débranchez les prises de terre avant de procéder à l’installation ou à l'entretien

2 Proprietary and Confidential ©2023 Vertiv Group Corp.



WARNING! Risk of electrical shock. It can cause personal injury or death. This UPS has several circuits that are energized with high DC as well as AC voltages. Check for the voltage with both the AC and the DC voltmeters before working within the UPS. Check for the voltage with both the AC and the DC voltmeters before making contact. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should be involved in installing the UPS or preparing the UPS for installation. When performing maintenance with any part of the equipment under power, the service personnel and the test equipment should be standing on rubber mats. In the case of fire involving electrical equipment, use only carbon dioxide fire extinguishers or those approved for use in fighting the electrical fires. Extreme caution is required when performing installation and maintenance. Special safety precautions are required for the procedures involving handling, installation and maintenance of the UPS system. Observe all safety precautions in this manual before handling or installing the UPS system. Observe all precautions before as well as during performance of all maintenance procedures. Observe all the DC safety precautions before working on or near the DC system.

WARNING! Risque de décharge électrique pouvant causer des blessures graves, voire mortelles. Ce système

ASC comporte plusieurs circuits à haute tension c.a et c.c. Vérifiez les tensions au moyen de voltmètres c.a.

et c.c. avant d’utiliser le système ASC. Vérifiez les tensions avec des voltmètres c.a. et c.c. avant d’établir tout contact. Seuls des employés qualifiés et dûment formés portant un casque, des gants, des chaussures et des lunettes de sécurité adéquats doivent se charger d’installer le système ASC ou de le préparer pour l’installation.Les responsables de l’entretien et l’équipement d’essai doivent reposer sur des tapis de caoutchouc lors de toute intervention sur une pièce d’équipement sous tension. En cas d’incendie associé à du matériel électrique, n’utilisez que des extincteurs à dioxyde de carbone ou homologués pour la lutte contre les incendies d’origine électrique. Les opérations d’installation et d’entretien requièrent une extrême prudence. Des précautions de sécurité spéciales sont requises pour les procédures associées à la manutention, à l’installation et à l’entretien du système ASC. Observez toutes les précautions de sécurité décrites dans le présent manuel avant de manipuler ou d’installer le système ASC. Observez également toutes les précautions avant et pendant toutes les procédures d’entretien. Observez toutes les précautions de sécurité appropriées lorsque vous travaillez sur à proximité d’une source c.c. de sécurité appropriées dès que vous vous trouvez à proximité d’une source c.c.

WARNING! Risk of heavy unit falling over. Improper handling can cause damage to the equipment, injury or death. Exercise extreme care when handling the UPS cabinets to avoid the equipment damage or injury to the personnel. The UPS module weight is up to 956 lb. (434 kg). Locate center of gravity symbols and determine unit weight before handling each cabinet. Test lift and balance the cabinets before transporting.

Maintain minimum tilt from vertical at all times. Slots at the base of the module cabinets are intended for forklift use. Base slots will support the unit only if the forks are completely beneath the unit. Read all of the following instructions before attempting to move, lift, or remove packaging from unit, or prepare unit for installation.


3


WARNING! Le centre de gravité élevé de l’appareil présente un risque de renversement. Une mauvaise manutention peut entraîner des dommages matériels, des blessures et même la mort. Faites preuve d’une extrême prudence lors de la manutention des armoires ASC afin d’éviter de les endommager ou de blesser le personnel. Le module ASC pèse jusqu’à 434kg (956lb). Identifiez les symboles de centre de gravité et déterminez le poids de l’appareil avant de manipuler chaque armoire. Testez le levage et l’équilibre des armoires avant de transporter l’appareil. Maintenez en tout temps l'inclinaison verticale minimale. Les fentes situées à la base des armoires du module sont conçues pour utiliser le chariot élévateur. Les fentes situées à la base peuvent soutenir le système seulement si les fourches se trouvent complètement sous le système.

Lisez toutes les instructions ci-dessous avant de tenter de déplacer, lever, déballer ou préparer le système en vue de son installation.

WARNING! Risk of electrical shock and fire. It can cause damage to the equipment, personal injury or death.

Under typical operation and with all the UPS doors closed, only the normal safety precautions are necessary.

The area around the UPS system should be kept free of puddles of water, excess moisture and debris. Only test equipment designed for troubleshooting should be used. This is particularly true for oscilloscopes.

Always check with an AC and DC voltmeter to ensure safety before making contact or using tools. Even when the power is turned Off, dangerously high potential electric charges may exist at the capacitor banks and at the DC connections. All the wiring must be installed by a properly trained and qualified electrician. All the power and the control wiring must comply with all applicable national, state and local codes. One person should never work alone, even if all power is disconnected from the equipment. A second person should be standing by to assist and to summon help in case of an accident.

WARNING! Risque de décharge électrique et d’incendie. pouvant entraîner des dommages matériels, des blessures et même la mort. Les précautions de sécurité habituelles suffisent lorsque le système ASC est en mode de fonctionnement normal et que toutes les portes sont fermées. La zone entourant le système ASC doit être exempte de flaques d’eau, d’humidité excessive et de débris. Seuls des équipements d’essai conçus pour le dépannage doivent être utilisés. Cette mise en garde couvre notamment les oscilloscopes. Utilisez toujours un voltmètre c.a. et c.c. pour vérifier les tensions avant d’établir un contact ou d’utiliser des appareils. Des tensions dangereusement élevées peuvent demeurer dans les batteries de condensateurs et au niveau des raccords c.c., même une fois l’alimentation coupée. Tous les raccords doivent être effectués par un électricien dûment formé et qualifié. Tous les câbles d’alimentation et de commande doivent être conformes aux codes nationaux et locaux en vigueur. Une personne ne devrait jamais travailler seule, même si toute l’alimentation d’entrée est coupée. Une deuxième personne devrait toujours être présente pour porter assistance ou chercher de l’aide en cas d’accident.

NOTE: Materials sold hereunder cannot be used in the patient vicinity (e.g., use where UL, cUL or IEC 60601-1 is required). Medical applications such as invasive procedures and electrical life support equipment are subject to additional terms and conditions.

Ground Leakage Currents




WARNING! Risk of electric shock from high leakage current. It can cause damage to the property, injury and death. EARTH CONNECTION IS ESSENTIAL BEFORE CONNECTING THE INPUT SUPPLY. Earth leakage current exceeds 3.5 mA and is less than 1000 mA. The Transient and steady-state earth leakage currents, which may occur when starting the equipment, should be taken into account when selecting instantaneous

Residual Current Circuit Breakers (RCCB) or RCD devices. (RCCBs) must be selected sensitive to DC unidirectional pulses (Class A) and insensitive to transient current pulses. Note also that the earth leakage currents of the load will be carried by this RCCB or RCD. This equipment must be earthed in accordance with the local electrical code of practice.

WARNING! Risque de décharge électrique due à un courant de fuite élevé pouvant causer des blessures, des dommages matériels et même la mort. IL EST PRIMORDIAL D'ASSURER UNE CONNEXION DE TERRE AVANT

DE BRANCHER L'ALIMENTATION D'ENTRÉE. La fuite à la terre est supérieure à 3,5 mA et inférieure à 1 000 mA. Vous devez tenir compte des fuites de courant transitoires et permanentes à la terre, susceptibles de se produire au démarrage de l'équipement, lors de la sélection des dispositifs DDFT instantanés. Vous devez sélectionner des disjoncteurs différentiels de fuite à la terre (DDFT) sensibles aux impulsions unidirectionnelles c.c. (classe A) et insensibles aux impulsions de courant transitoires. Notez également que les courants de fuite à la terre de la charge seront acheminés par ce dispositif DDFT. Cet équipement doit

être mis à la terre conformément au code national de l'électricité.

WARNING! Risk of electric shock. It can cause damage to the property, injury and death. Under typical operation and with all the UPS doors closed, only normal safety precautions are necessary. The area around the UPS system should be kept free of puddles of water, excess moisture and debris. Special safety precautions are required for the procedures involving handling, installation and maintenance of the UPS system. Observe all the safety precautions in this manual before handling or installing the UPS system as well as during all maintenance procedures. This equipment contains several circuits that are energized with high voltage. Only test equipment designed for troubleshooting should be used. This is particularly true for oscilloscopes. Always check with the AC and the DC voltmeters to ensure safety before making contact or using tools. Even when the power is turned Off, dangerously high electric charges may exist within the UPS.

All the power and the control wiring should be installed by a qualified electrician. All the power and the control wiring must comply with the NEC and applicable local codes. ONLY qualified service personnel should perform maintenance on the UPS system. When performing maintenance with any part of the equipment under power, service personnel and test equipment should be standing on rubber mats. The service personnel should wear insulating shoes for isolation from direct contact with the floor (earth ground). Never work alone, even if all the power is removed from the equipment. A second person should be standing by to assist and summon help in case an accident occur.


5


WARNING! Risque de décharge électrique pouvant causer des blessures, des dommages matériels et même la mort. Les précautions de sécurité habituelles suffisent lorsque le système ASC est en mode de fonctionnement normal et que toutes les portes sont fermées. La zone entourant le système ASC doit être exempte de flaques d’eau, d’humidité excessive et de débris. Des précautions de sécurité spéciales sont requises pour les procédures associées à la manutention, à l’installation et à l’entretien du système ASC.

Observez toutes les précautions de sécurité décrites dans le présent manuel avant de manipuler ou d’installer le système ASC, ainsi que pendant toutes les procédures d’entretien Cet équipement comporte plusieurs circuits à haute tension. Seuls des équipements d’essai conçus pour le dépannage doivent être utilisés. Cette mise en garde couvre notamment les oscilloscopes. Utilisez toujours des voltmètres c.a. et c.c. pour vérifier les tensions avant d’établir un contact ou d’utiliser des outils. Des tensions dangereusement élevées peuvent demeurer dans le système ASC même une fois l’alimentation coupée. Tous les câbles d’alimentation et de contrôle doivent être installés par un électricien qualifié. Tous les câbles d’alimentation et de contrôle doivent

être conformes au Code national de l’électricité des États-Unis (NEC) et celui du Canada, ainsi qu’aux codes locaux en vigueur. L’entretien du système ASC ne doit être confié qu’à des professionnels qualifiés. Les responsables de l’entretien et l’équipement d’essai doivent reposer sur des tapis de caoutchouc lors de toute intervention sur une pièce d’équipement sous tension. Les responsables de l’entretien doivent porter des chaussures isolantes pour prévenir tout contact direct avec le plancher. Ne travaillez jamais seul, même si toute l’alimentation d’entrée est coupée de l’équipement. Une seconde personne devrait toujours être présente pour porter assistance ou chercher de l’aide en cas d’accident.

WARNING! Failure to follow adequate grounding procedures can result in electric shock hazard to personnel, or the risk of fire, should a ground fault occur. All operations described in this section must be performed by properly trained and qualified electricians or technical personnel. If any difficulties are encountered, contact

Vertiv. See the back page of this manual for contact information.

WARNING! Le non-respect des procédures de mise à la terre peut entraîner des risques d’électrocution du personnel, ou des risques d’incendie en cas de défectuosité de la mise à la terre. Toutes les opérations décrites dans cette section ne doivent être effectuées que par des électriciens ou des techniciens professionnels dûment formés et qualifiés . En cas de difficultés, communiquez avec vertiv. Pour obtenir les renseignements de contact, consultez la dernière page de ce manuel.

NOTICE

Risk of improper electromagnetic shielding. It can cause radio communication interference. This unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules. These limits provide reasonable protection against harmful interference in a commercial environment. This unit generates, uses and radiates radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. This unit is not designed for use in a residential area.

Operation of this unit in a residential area may cause harmful interference that the user is solely responsible for correcting.



Glossary of Symbols

Symbol Description

Risk of electrical shock

Indicates caution followed by important instructions

AC input

AC output

Requests the user to consult the manual

Indicates the unit contains a valve-regulated lead acid battery

Recycle

DC voltage



7


Symbol Description

AC voltage

Equipment grounding conductor

Bonded to ground




2 Introduction

The Vertiv™ Liebert® EXM UPS can be configured as either a fixed capacity or scalable, transformer-free, online uninterruptible power system with 208/120V input and 208/120V output capability. The Liebert® EXM can operate with either a 50Hz or 60Hz input and provide a matching output frequency conversion.

When configured for scalability, the UPS capacity can be increased in 20kVA increments. Based on the configuration, a power module can be set to a redundant operation mode. Contact Vertiv services about adding capacity.

Optional transformers are available to add 208V isolation or 480V or 600V input capability to the Liebert® EXM in the optional Vertiv™ Liebert® Bypass distribution cabinet (BDC) and in the optional Liebert® EXM dual transformer cabinet.

The Liebert® EXM provides continuous, high-quality AC power to the business-critical equipment, such as telecommunications and data processing equipment. The Liebert® EXM supplies power free of the disturbances and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts, surges, and sags.

The Liebert® EXM utilizes the latest in high-frequency, double-conversion Pulse width modulation (PWM) technology and fully digital controls to enhance its reliability and increase the ease of use.

The 10-40kVA/kW Liebert® EXM includes internal batteries to support the load when utility power is not present.

2.1 Operator Control and Display Panel

Information about using the UPS control panel is detailed in SL-26200, available at Vertiv’s Web site, www.vertiv.com

2 Introduction Proprietary and Confidential ©2023 Vertiv Group Corp.

9


This page intentionally left blank


2 Introduction


3 Installation

This section describes the environmental requirements of the Vertiv™ Liebert® EXM . Mechanical considerations that must be taken into account when planning the positioning and cabling of the UPS equipment.

Because each site is unique, this section presents a guide to general procedures and practices that should be observed by the installing engineer, rather than step by step installation instructions.

NOTICE

Risk of improper installation. It can cause damage to the equipment. Do not apply electrical power to the UPS equipment before the commissioning engineer arrives at the installation site. The UPS must be installed by a properly trained and qualified engineer in accordance with the information contained in this chapter. All the equipment not referred to in this manual is shipped with details of its own mechanical and electrical installation information.

NOTE: Three-phase, four-wire input power is required.

NOTE: Input power must be supplied to the Liebert® EXM from a properly grounded wye source. The Liebert® EXM is not for use with impedance grounded systems, corner-grounded systems or high-leg delta systems. For these applications, an isolation transformer must be installed between the input power and the Liebert® EXM.

3.1 Initial Inspections

While the Liebert® EXM and ancillary cabinets are still on the truck, inspect the equipment and shipping container for any signs of damage or mishandling. Do not attempt to install the system if damage is apparent. If any damage is noted, file a damage claim with the shipping agency immediately and contact Vertiv services at 800-543-2378 to inform them of the damage claim and the condition of the equipment.

Compare the contents of the shipment with the bill of lading. Report any missing items to the carrier and your local Vertiv representative immediately.

Check the product label on the back of front door and confirm the contents match the UPS model, capacity and main parameters that were ordered.

3.1.1 Storing the UPS and Batteries for Delayed Installation

If the Liebert® EXM system will not be installed immediately, it must be stored indoors in a clean, dry and cool location (see

UPS Environmental on page 69 . If the UPS includes batteries, either internally or in a battery cabinet, the batteries

requirements will dictate the storage conditions. Batteries should be unpacked, installed and charged as soon as possible after delivery.

NOTICE

Risk of failure to properly charge batteries. It can cause permanent damage to the batteries and void the warranty. Batteries will self-discharge during storage. Batteries must be recharged as recommended by the battery manufacturer. A notice of “Charge Before Date” is affixed to each unit that has batteries inside. The

“Charge Before Date” is calculated based on the batteries being stored at 77°F (25°C). Storage at a higher temperature will increase the rate of self-discharge, requiring earlier recharge. Consult the battery manufacturer on how to determine when the batteries need to be recharged.

3 Installation Proprietary and Confidential ©2023 Vertiv Group Corp.

11


3.2 Preliminary Checks

3.2.1 Identification

The equipment supplied has an identification tag on the back of the main door listing the type and size of the UPS.

3.3 UPS Location

3.3.1 Positioning the UPS

• Choose a location for the UPS that offers:

• Easy connection to inputs, outputs and auxiliary equipment.

• Enough space to service the UPS.

• Air circulation sufficient to expel heat produced by UPS.

• Protection against moisture and excessive humidity.

• Protection against dust and other particulate matter.

• Compliance with fire prevention regulations and practices.

• Operating environment temperature of 74°F-80°F (23°C-27°C) for maximum battery life.

3.3.2 Environmental considerations

Before installing the Vertiv™ Liebert® EXM, verify that the UPS room satisfies the environmental conditions stipulated in

UPS

Environmental on page 69 , paying particular attention to the ambient temperature and air exchange system.

The UPS unit should be installed in a cool, dry, clean air environment with adequate ventilation to keep the ambient temperature within the specified operating range 32°F to 104°F (0°C to 40°C).

For optimal UPS system performance and service life, maintain the operating temperature within the range of 74°-80°F, (23°-

27°C).

The Liebert® EXM is cooled by the internal fans. Cooling air enters the unit through the front of the unit and is exhausted from the top. To permit proper air flow and prevent overheating, do not block or cover the ventilation openings or blow air down onto the unit. The UPS requires 24 in. (610mm) ventilation clearance above the unit.

See Table 8.7 on page 71 for details on heat dissipation.

3.4 Battery Location

Temperature is a major factor in determining the battery life and the capacity. Battery manufacturers recommend an operating temperature of 77°F (25°C). The ambient temperatures warmer than this reduce battery life, temperatures below this, reduces the battery capacity. In a typical installation, battery temperature should be maintained between 74°F and 80°F

(23°-27°C). Batteries should be placed where there are no main heat sources or air inlets to prevent portions of batteries from being either much warmer or much cooler than other parts of the batteries.

3.5 Considerations in Moving the Liebert® EXM

Ensure that the UPS weight is within the designated surface weight loading (lb./ft

2 or kg/cm

2

) of any handling equipment. See

UPS Mechanical Characteristics on page 70 for weights of various units.


3 Installation


The Liebert® EXM may be rolled on its casters for short distances only. For the longer distances, move the UPS with a forklift or similar equipment to ease the relocation and to reduce vibration.

WARNING! Risk of moving heavy unit. It can cause damage to the property, injury and death. Ensure that any equipment that will be used to move the Vertiv™ Liebert® EXM has sufficient lifting capacity. The weight the

Liebert® EXM ranges from 809 Ib. to 956 lb. (367 kg to 434 kg) without batteries. Refer to

Weights for

Vertiv™ Liebert® EXM 10-40kVA Frame on page 15

for the unit’s weight with batteries. The UPS presents a tipping hazard. Do not tilt the Liebert® EXM more than 15 degrees from vertical. The UPS is fitted with casters take care to prevent movement when unbolting the equipment from its shipping pallet. Ensure adequate personnel and lifting equipment are available when taking the Liebert® EXM off its shipping pallet.

WARNING! Le poids élevé de l'appareil peut entraîner des dommages matériels, des blessures et même la mort. Veillez à ce que les équipements utilisés pour déplacer le système EXM de Liebert possèdent une capacité nominale suffisante. Le poids du système EXM de Liebert varie entre 367 kg et 434 kg (809 Ib et 956 lb) sans les batteries. Reportez-vous au

Weights for Vertiv™ Liebert® EXM 10-40kVA Frame on page 15

pour connaître le poids de l'appareil avec les batteries. Le système ASC présente un risque de renversement.

N'inclinez pas le système EXM de Liebert à plus de 15 degrés de la verticale. Comme le système ASC est

équipé de roulettes, veillez à éviter les mouvements involontaires lorsque vous déboulonnez l'équipement de sa palette d'expédition. Veillez à ce qu'un personnel approprié et un dispositif de levage soient disponibles lorsque vous retirez le système EXM de Liebert de la palette d'expédition.

WARNING! Risk of heavy unit tipping over while being moved. It can cause damage to the property, injury and death. The casters are strong enough for movement across even surfaces only. Casters may fail if they are subjected to shock loading, such as being dropped or rolled over holes in the floor or obstructions. Such failure may cause the unit to tip over, injuring personnel and damaging the equipment.

WARNING! Le centre de gravité élevé de l'appareil présente un risque de renversement lors des déplacements, peut entraîner des dommages matériels, des blessures et même la mort. Les roulettes sont suffisamment résistantes pour le déplacement sur des surfaces planes uniquement. Les roulettes peuvent

être endommagées si vous les soumettez à des impacts, notamment en cas de chute ou de passage sur des obstacles ou trous dans le plancher. Une telle défaillance peut causer le renversement de l'appareil, qui risque de blesser le personnel et d'endommager l'équipement.

Final Positioning

When the equipment has been finally positioned, ensure that the adjustable stops are set so that the UPS will remain stationary and stable (see

Installation Drawings on page 43 ).

The Liebert® EXM and its auxiliary cabinets must be installed on a concrete or equivalent, non-resilient floor.

3.6 Mechanical Considerations

The Liebert® EXM is constructed with a steel frame and removable panels. The top and the side panels are secured to the chassis by the screws. The doors may be opened for access to the power connection bars, the auxiliary terminal blocks and the power switches.


13


The UPS comes with an operator control panel that provides basic operational status and alarm information. The cabinet houses the power components. Cooling is provided by the internal fans. The unit sits on four casters. Adjustable stops are provided to prevent the UPS from moving once it has been moved to its final position.

WARNING! Risk of heavy units tipping over while being moved. It can cause damage to the property, injury and death.

WARNING! Le centre de gravité élevé des appareils présente un risque de renversement lors des déplacements, peut entraîner des dommages matériels, des blessures et même la mort.


3 Installation

3.6.1 Dimension

Figure 3.1 UPS Dimensions


Table 3.1 Weights for Vertiv™ Liebert® EXM 10-40kVA Frame

UPS Rating, kVA No Internal Batteries 12HX100 12HX150E

10

15

20

30

684 (310)

684 (310)

684 (310)

758 (344)

40 758 (344)

Add 100 lb. (45 kg) for shipping weights.

1212 (550)

1212 (550)

1212 (550)

N/A

N/A

1308 (593)

1308 (593)

1308 (593)

1382 (627)

N/A

12HX205

1716 (778)

1716 (778)

1716 (778)

1790 (812)

1790 (812)

HR1500

1332 (812)

1332 (812)

1332 (812)

1406 (638)

N/A

HR2000

1644 (746)

1644 (746)

1644 (746)

1718 (779)

1718 (779)


15


3.6.2 Clearances

Provide at least minimum clearance required by the NEC on all sides of Liebert® EXM, including 36in. (914mm) in front, to permit routine tightening of power terminations within the UPS and free passage for personnel with the door fully opened.

Depending on the floor anchoring system used, up to 5in. (127mm) may be required in the rear of the UPS.

There are no ventilation grilles on the sides or back of the UPS.

Leave a minimum of 24in. (610mm) between the top of the UPS frame and the ceiling to permit adequate air circulation above the unit. Vertiv recommends against using the air conditioning or other systems that blow air onto the top of the unit.

Figure 3.2 Clearances - Front, Side and Rear

16

3.6.3 Floor installation

If the Vertiv™ Liebert® EXM is to be placed on a raised floor, the UPS should be mounted on a pedestal that will support the equipment point loading. Refer to the bottom view in

UPS Dimensions on the previous page to design this pedestal.

3.6.4 Cable Entry

The cables can enter the Liebert® EXM from the top or the bottom through the removable metal plates.

Some plates have factory punched holes and others are designed to allow the personnel to punch holes for fitting and securing the conduit. Once the conduit holes are punched, these plates should be reattached to the UPS. The conduit size and wiring method must be in accordance with all the local, regional and national codes and regulations, including the NEC

ANSI/NFPA 70.

The UPS must be accessible from the front to allow personnel to complete the cable connections and make necessary adjustments.

NOTE: When installing the UPS, the customer must provide a disconnect with the overcurrent protection at the output of the UPS.


3 Installation


Figure 3.3 Cable Entry Locations

.

Item

2

1

Description

Top Power Cable Entry

Top Control Cable Entry

Item

3

4

Description

Bottom Power Cable Entry

Bottom Control Cable Entry

3.7 Auxiliary Cabinets

The Vertiv™ Liebert® EXM 10-40kVA UPS can be integrated with the following auxiliary cabinets:

Battery Cabinets

The Optional Liebert® EXM Battery Cabinets are available for each Liebert® EXM model to provide the extended run times, the large battery system solutions and the optional integrated Alber® battery monitoring. The battery cabinets are designed to be bolted to the left side of the UPS (see

Cabinet Arrangements on the next page ). Refer to the Liebert EXM Battery

Cabinet Manual (SL-25651) for details.

Multiple battery chemistries are supported on the Liebert® EXM including Lithium-Ion batteries.

Maintenance Bypass Cabinets

The Optional Liebert® EXM Bypass Cabinets are available to provide a full or partial wraparound maintenance bypass for servicing the UPS. Liebert bypass cabinets are designed to be bolted to the right side of the UPS (see

Cabinet Arrangements on the next page ). Refer to the Liebert® EXM Maintenance Bypass Cabinet Manual (SL-25652), for further details.

Bypass Distribution Cabinet

The Optional Liebert® EXM Bypass Distribution Cabinets are available to provide a full wraparound maintenance bypass for servicing the UPS with the optional input transformer and the output distribution. The Liebert bypass cabinets are designed to be bolted to the right side of the UPS (see

Cabinet Arrangements on the next page ). Refer to the Liebert® EXM Bypass

Distribution Cabinet Manual (SL-25653,), for further details.


17


Paralleling Cabinet

The Optional Vertiv™ Liebert® EXM Parallel Cabinets are available to provide the connections enabling parallel operation of up to three Liebert® EXM UPS in applications offering increased capacity and redundant protection (1+1, 2+0, 2+1). A partial wraparound maintenance bypass for servicing of the parallel UPS system is included. Refer to, the Liebert® EXM Paralleling

Cabinet Manual (SL-25654), for further details.

Dual Transformer Cabinet

The Optional Liebert® EXM Dual Transformer Cabinets are available to provide step-down voltage transformation for the dual-input UPS applications. Refer to the Liebert® EXM Dual Transformer Cabinet Manual (SL-25655), for further details.

System Composition

A UPS system can comprise a number of optional equipment cabinets, depending on the system design requirements. For example, the UPS cabinet, the External Battery Cabinet and the External Bypass Cabinet. All the cabinets used will be the same height and will be designed to be positioned side-by-side to form an aesthetically appealing equipment suite.

Figure 3.4 Cabinet Arrangements

18

NOTE: All the units viewed from above. layouts shown are typical. not all auxiliary cabinets are shown. Refer to the submittal drawings for the exact configuration of your system.

1.

Liebert® EXM Connected only to Vertiv™ Liebert® BDC/MDC. The BDC/MBC must be on right side of the

Liebert® EXM .

2.

Liebert® EXM connected to Battery Cabinet. Battery Cabinet must be left side of the Liebert® EXM

3.

Liebert® EXM connected Liebert® BDC/MBC. BDC/MBC must be on right side of the Liebert® EXM .

4. Liebert® EXM connected to Battery Cabinet. Battery Cabinets must be on the left side of the Liebert® EXM .


3 Installation

3.8 Power Module Assembly

Figure 3.5 Power Module Assembly Indicators and Controls


Item Description Item Description

2

1

3

Ready Switch

DIP Switches

Run LED

4

5

—

Fault LED

Battery Start Button

—

• The Battery Start button allows starting the UPS on battery.

• The Run LED is illuminated Green when the Vertiv™ Liebert® Power Module Assembly is operating normally.

• The Fault LED will illuminate red when the Liebert® Power Module Assembly has a problem.

Table 3.2 LED Indications On Power Module Assembly

LED Status Indication

Run LED (Green)

Flashing Green

Constant Green

OFF

Fault LED (Red)

The inverter is starting, but has no output yet.

The inverter has started to supply power.

The inverter has not started up.

Constant Red

Flashing Red

OFF

Auxiliary power failure (15V or 24V), rectifier overtemperature, rectifier failure (including battery SCR short circuit), battery converter failure, soft start failure, main circuit back feed, abnormal input current, inverter failure, output short circuit, bypass SCR short circuit fault, inverter relay short circuit fault, abnormal bus voltage, module not ready, module ID out of range and duplicated module ID.

Charger failure, abnormal main circuit voltage, abnormal main circuit frequency, main circuit undervoltage, main circuit reverse phase, battery unavailable, reverse battery, input zero-loss, current sharing failure, module overload, inverter relay disconnection fault, bypass SCR disconnection fault and input fuse blown.

No above failures or alarms.


19


3.9 Static Bypass Assembly

Figure 3.6 Static Bypass Assembly Connections

Item

3

4

1

2

Description

DB9

DB15

Ready Switch

Vertiv™ Liebert® IntelliSlot Bays 1, 2, 3

The Static Bypass Assembly has three Liebert® IntelliSlot interface card bays and connections for the optional ancillary cabinets and for other options.


3 Installation


4 Electrical Connections-UPS

The UPS requires both the power and the control cabling once it has been mechanically installed. All the control cables must run separately for power cables in metal conduits or metal ducts that are electrically bonded to the metal work of the cabinets to which they are connected.

WARNING! Risk of electric shock. It can cause damage to the property, injury and death. Before connecting input power to the Vertiv™ Liebert® EXM , ensure that you are aware of the location and operation of the overcurrent protection devices that connect the UPS input/bypass supply to the power distribution panel.

De-energize and lockout or tagout all incoming high- and low-voltage power circuits before installing the cables or making any electrical connections.

WARNING! Risque de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. Avant de procéder au branchement de l'alimentation d'entrée du système EXM de Liebert, veillez à prendre connaissance de l'emplacement et du fonctionnement des dispositifs de protection de surintensité qui raccordent l'alimentation d'entrée ou de dérivation du système ASC au panneau de distribution électrique.

Coupez l'alimentation et appliquez le verrouillage ou l'étiquetage à tous les circuits d'alimentation haute tension et basse tension avant d'installer les câbles ou d'effectuer tout autre branchement électrique.

4.1 Power Cabling

4.1.1 Lug Size and Cable Rating

The main factors affecting the choice and size of cable are voltage, current (also taking into account over current), room temperature and conditions of installation of the cable. Refer to ANSI/NFPA 70.

The power cables of the system must be sized with respect to the following description:

• UPS input cables - The UPS input cables must be sized for the maximum input current, including the maximum battery recharge current, given in

UPS Currents and Terminals-Input (for Single-Input Unit, 208V Operation) on page 70 , with respect to the unit rating and the input AC voltage.

• UPS bypass and output cables - The bypass and the output cables must be sized for the nominal output current,

given in UPS Currents and Terminals-Input (for Single-Input Unit, 208V Operation) on page 70 , with respect to

the unit rating and the output AC voltage.

• Battery cables - See the Liebert® EXM External Battery Cabinet Manual (SL-25651), for battery installation guidelines and instructions. The manual ships with the battery cabinet and is available at Vertiv™’s website: www.vertiv.com

.

NOTE:

UPS Currents and Terminals-Input (for Single-Input Unit, 208V Operation) on page 70

gives nominal currents for determining the size of the UPS power cables. Other important factors to consider include cable route length and coordination with the protective devices.

The power cables can be sized to suit the UPS unit rating according to

UPS Currents and Terminals-Input (for Single-Input

Unit, 208V Operation) on page 70 .

4 Electrical Connections-UPS Proprietary and Confidential ©2023 Vertiv Group Corp.

21


Torque Requirements

Refer to Table 4.1 below and Table 4.2 below for lug size and torque requirements.

Table 4.1 Busbars (for Power Wiring)

Bolt shaft size Lb-in (Nm)

3/8" (M10)

Table 4.2 Terminal Block With Compression Lugs (For Control Wiring)

AWg Wire Size OR RANGE LB-in (NM)

192 (22)

#22 - #14 3.5 to 5.3 (0.4 to 0.6)

4.2 External Protective Devices

For safety concerns, it is necessary to install the external circuit breakers or other protective devices for the input AC supply of the UPS system. This section provides generic practical information for the qualified installation engineers. The installation engineers should be knowledgeable about regulatory wiring standards and the equipment to be installed.

To reduce the risk of fire, connect only to a circuit provided with branch circuit overcurrent protection in accordance with the

NEC ANSI/NFPA 70.

4.2.1 Rectifier and Bypass Input Supply of the UPS

Overcurrents

Install the suitable protective devices in the distribution unit of the incoming mains supply, considering the power cable current carrying capacity and overload capacity of the system. Generally, the magnetic circuit breaker with IEC60947-2 tripping curve C (normal) at the 125% of the nominal current listed in

UPS Currents and Terminals-Input (for Single-Input Unit,

208V Operation) on page 70 is recommended.

Split bypass: In case a split bypass is used, a separate protective devices should be installed for the rectifier input and the bypass input in the incoming mains distribution panel. A shunt trip coil of 120V must be installed in the bypass and in the rectifier input breakers if the system does not include a Vertiv™ Liebert® Bypass Cabinet.

NOTE: The rectifier input and bypass input must use the same neutral line.

Earth Leakage, RCD Devices

Any residual current detector (RCD) installed upstream of the UPS input supply:

• Must be sensitive to DC unidirectional pulses (Class A)

• Must be insensitive to transient current pulses, and

• Must have an average sensitivity, adjustable between 0.3 and 1A.

To avoid false alarms, the earth leakage monitoring devices (when used in systems with split bypass input or when used in paralleled UPS configurations) must be located upstream of the common neutral sinking point. Alternatively, the device must monitor the combined four-wire rectifier and the split bypass input currents.




4.2.2 UPS Output

If an external distribution panel is used for the load distribution, the selection of the protective devices must provide

discrimination with those that are used at the input to the UPS (Table 8.8 on page 71 ).

4.2.3 UPS Input Configuration

By default, the Vertiv™ Liebert® EXM which is shipped with the internal links installed between the bypass input and the main

(rectifier) input (single input configuration) Figure 4.1 below and Figure 4.2 on the next page show the Liebert® EXM in a split

bypass (single source dual-input) configuration. In this configuration, the static bypass and the maintenance bypass lines are supplied by the same source using separate feeds. Both the feeds must be protected externally with properly sized protective devices.

Wire Liebert® EXM as Single Source Dual-Input

To wire the Liebert® EXM as a single source dual-input UPS, remove the factory-installed links between the Rectifier and the

Bypass input busbar (see Figure 4.4 on page 27 ).

Figure 4.1 Single UPS Block Diagram-Dual input, Single Source Configuration, Without Bypass Cabinet

Item Description

1

3

2

* Bypass AC Input 4-Wire + GND (See

The customer must supply shunt trip breakers with 120V coils to the bypass and the rectifier on the next page

)

* Rectifier AC Input 4-Wire + GND

Battery

4 UPS Cabinet

*External overcurrent protection by others

Item Description

5

6

7

—

Static Bypass

Output Busbar

AC Output 208V 4-Wire + GND

—


23


Notes To Figure

1.

Install in accordance with the national and the local electrical codes.

2.

The Input and the bypass must share the same single source.

3.

A neutral is required from the system AC input source. Vertiv recommends a full capacity neutral conductor and grounding conductors.

4. The bypass and the rectifier inputs and output cables must be run in the separate conduits.

5. The control wiring must be run in the separate conduits.

6. The customer must supply shunt trip breakers with 120V coils to the bypass and the rectifier

Figure 4.2 Single UPS Block Diagram-Dual Input, Single Source Configuration

24

Item

1

2

3

4

Description

* Bypass AC Input 4- Wire + GND

*Rectifier AC Input 4- Wire + GND

Battery

UPS Cabinet

Item

7

8

9

10

Description


MBB (Maintenance Bypass Breaker)

MIB (Maintenance Isolation Breaker)

Optional Distribution (See

Optional 54-pole, 225A distribution panel.

on the facing page

)

AC Output 208V 4 Wire + GND

—

5

6

Static Bypass

BIB (Bypass Isolation Breaker)

* External Overcurrent Protection by others

11

—

Notes To Figure

1.





2.


3.

A neutral is required from the system AC input source. Vertiv recommends a full capacity neutral conductor and grounding Conductors.



6. Optional 54-pole, 225A distribution panel.

7.

The customer must supply a shunt trip breaker with 120V coil. If an optional Vertiv™ Liebert® BDC is not present, the shunt trip must be installed to the bypass and the rectifier breaker.

4.2.4 UPS Input Configuration with Transformers

Figure 4.3 below shows the Vertiv™ Liebert® EXM in a split bypass (dual-source, dual-input) configuration using two

transformers inside a dual-transformer cabinet. In this configuration, the static bypass and the rectifier lines can be supplied by independent sources. The Liebert® EXM Dual Transformer Cabinet is the only approved method for supplying the EXM from two independent sources. See the Liebert® EXM Dual Transformer Cabinet Manual (SL-25655) for details. Both feeds must be protected externally with properly sized protective devices.

Figure 4.3 Liebert® EXM in a Split Bypass Configuration

Item

3

4

2

1

5

6

Notes To Figure

Description

Bypass AC Input 4-Wire + GND

Rectifier AC Input 4-Wire + GND

Dual Transformer Cabinet, Optional

Battery

UPS Cabinet

Static Bypass


Item

9

10

7

8

11

12

Description

BIB (Bypass Isolation Breaker)




Optional Distribution

AC Output 208V 4-Wire + GND


25


1.


2.


3.

A neutral is required from the system AC input source. Vertiv recommends a full capacity neutral conductor and grounding conductors.



6. Optional 54-pole, 225A distribution panel.

4.2.5 Cabling Guidelines

The following are guidelines only and are superseded by the local regulations and codes of practice where applicable. Use wiring rated at 75°C or greater.

Take special care when determining the size of the neutral cable, as current circulating on the neutral cable may be greater than nominal current in the case of non-linear loads. Refer to the values in

UPS Electrical Characteristics on page 70

The ground conductor should be sized according to such factors as the fault rating, the cable lengths and type of protection.

The ground cable connecting the UPS to the main ground system must follow the most direct route possible. The control wiring and the power wiring must be run in the separate conduit. The output and the input cables must be run in the separate conduit.

Consider using paralleled smaller cables for heavy currents-this can ease installation.

Refer to the Vertiv™ Liebert® EXM Battery Cabinet Manual (SL-25651) for guidelines and instructions when sizing battery cables for optional external battery cabinets.

In most installations, the load equipment is connected to a distribution network of individually protected busbars fed by the

UPS output, rather than connected directly to the UPS itself. When this is the case, the UPS output cables can be rated to suit the individual distribution network demands rather than being fully load-rated.

NOTE: If more load is added to the distribution panel, the unit’s cabling must be resized.

When laying the power cables, do not form coils; this will help avoid increasing formation of electromagnetic interference.

4.2.6 Cable Connections

The rectifier input and output, the bypass and the battery are easily accessible from the front of the unit for installation. All

require lug type terminations. They are connected to the busbars on the front of the Liebert® EXM, as shown in Figure 4.4 on the facing page . These busbars are accessible when the Input/Output panel is removed.

NOTICE

Risk of improper installation. It can cause damage to the equipment. When wiring a single-input only system, connect only the power wiring to the input busbars.



Figure 4.4 Input Busbars -Vertiv™ Liebert® EXM 10-40kVA Frame


Item

7

8

5

6

3

4

1

2

Description

Batteries

Rectifier Input Phase A

Rectifier Input Phase B

Rectifier Input Phase C

Input Neutral

Bypass Input Phase A

Bypass Input Phase B

Bypass Input Phase C

Item

15

16

13

14

11

12

9

10

Description

Batt +

Batt N

Batt -

Output Phase A

Output Phase B

Output Phase C

Output Neutral

Ground


27


4.2.7 Accessory Fuses and Back-Feed Breaker Wiring

Two fuse blocks provide power for the back-feed breakers (standard) and the Vertiv™ Liebert® Alber™ BDSUi (optional). The fuse blocks are at the lower right of the I/O panel on the front of the Vertiv™ Liebert® EXM UPS.

See Figure 4.5 below for fuse-holder locations.

The back-feed breaker fuse block provides 120V nominal provided from the UPS output (L-N) and the fuse is rated for 2

amps. Figure 4.6 on the facing page shows the back-feed breaker wiring, located on the bypass static switch assembly.

The Liebert® EXM does not include internal back-feed protection. A shunt trip coil of 120V must be installed in the bypass and the rectifier input breakers, if the system does not include a Liebert® Bypass Cabinet. This is a safety feature and will prevent the UPS inverter from back-feeding the input source.

The Liebert® Alber™ BDSUi fuse block provides 208V nominal from the UPS output (L-L) and the fuse is rated at 8A. The

Alber BDSUi power wiring is shown in the Liebert EXM Battery Cabinet Manual (SL-25651).

Figure 4.5 Accessory Fuses

Item

1

2

Description

Back-Feed Breaker Fuse Block

Alber BDSUi Fuse Block (optional)



Figure 4.6 Dual Input Back-Feed Breaker Wiring When Bypass Distribution Cabinet Not Used


Item

3

4

2

1

Description

Upstream System Input Breaker

J23

J24

Backfeed Breaker Fuse Block (FH1)

Item

7

—

5

6

Description

Upstream Bypass Input Breaker

Upstream Rectifier Input Breaker, Optional

Backfeed Breaker Fuse Block (FH1)

—

Notes To Figure

1.

Auxiliary contacts not needed for the backfeed breaker operation.

2.

A 120V shunt trip coil is required for proper operation.

NOTE: A shunt trip of the upstream Rectifier Input Breaker and the Bypass Input Breaker is required.


29


4.2.8 Safety Ground

The safety ground busbar is below the neutral input and the output busbars as shown in Figure 4.7 on the facing page below .

The safety ground cable must be connected to the ground busbar and bonded to each cabinet in the system. This ground busbar is then connected to the ground electrode conductor (GEC).

All cabinets and the cable conduit should be grounded in accordance with the local regulations.

WARNING! Failure to follow adequate grounding procedures can result in electric shock hazard to personnel, or the risk of fire, should a ground fault occur. All operations described in this section must be performed by properly trained and qualified electricians or technical personnel. If any difficulties are encountered, contact

Vertiv. See the back page of this manual for contact information.

WARNING! Le non-respect des procédures de mise à la terre peut entraîner des risques d’électrocution du personnel, ou des risques d’incendie en cas de défectuosité de la mise à la terre. Toutes les opérations décrites dans cette section ne doivent être effectuées que par des électriciens ou des techniciens professionnels dûment formés et qualifiés. En cas de difficultés, communiquez avec Vertiv. Pour obtenir les renseignements de contact, consultez la dernière page de ce manuel.

NOTE: Proper grounding significantly reduces problems caused by the electromagnetic interference.

NOTE: The ground and the neutral busbars are easily accessible when the I/O panel is removed. Cable connections should be made before a cabinet is attached to the right side of the Vertiv™ Liebert® EXM or before the UPS is placed where another obstruction, such as a wall, is against the right side of Liebert® EXM .



Figure 4.7 Ground and Neutral Busbar Connections - 10-40kVA Frame Busbars


Item

3

4

2

1

Description

Input Neutral

Battery Neutral

Ground Busbar

Output Neutral

4.2.9 Protective Devices

For safety, it is necessary to install the circuit breakers in the input AC supply, external to the UPS system. Given that every installation has its own characteristics, this section provides guidelines for the qualified installation engineers with knowledge of operating practices, regulatory standards and the equipment to be installed.

UPS Rectifier and Bypass Input Supply

Protection from excessive overcurrents and short circuits in the power supply input

The external overcurrent protection for the AC output circuit is to be provided.

See

UPS Electrical Characteristics

on page 70 and Table 8.8 on page 71 for recommended breaker ratings. Overcurrent

protection for the battery circuit must be provided by the customer when using an optional External Battery Cabinet.


31


Dual Input Single Source

When wiring the UPS with a dual inputs but with a single input source, the Rectifier input and the Bypass input must be

protected separately. Size the breakers according to the input currents shown in Table 8.3 on page 70 through Table 8.6 on page 71 .

NOTE: For the single or dual input, a 120V shunt trip coils is required when a breaker is supplied by the customer. See

Figure 4.2 on page 24

and

Figure 4.3 on page 25

for details.

System Output

When using an external distribution panel for the load distribution, the output neutral and the input neutral must be separated at the input to the UPS.

4.2.10 Cabling Procedure

WARNING! All the operations described in this section must be performed by properly the trained and qualified electricians or technical personnel. If any difficulties are encountered, contact Vertiv. See the back page of this manual for contact information.

WARNING! Toutes les opérations décrites dans cette section ne doivent être effectuées que par des

électriciens ou des techniciens professionnels dûment formés et qualifiés . En cas de difficultés, communiquez avec Vertiv. Pour obtenir les renseignements de contact, consultez la dernière page de ce manuel.

NOTE: The hydraulic pressure pliers, combinative tools and piston ring pliers should be used to connect AC wiring.

Once the equipment has been positioned and secured for operation, and the battery and ground lugs have been connected

(see

Cable Connections on page 26 ), connect the power cables as described below. (Study the reference drawing in

Installation Drawings on page 43 )

1.

Verify that all incoming high and low voltage power circuits are de energized and locked out or tagged out before installing cables or making any electrical connections.

2.

Remove the front I/O panel to gain easier access to the connections busbars.

3.

Connect the facility ground and the ancillary ground bus cables to the copper ground busbar located in the middle of the Vertiv™ Liebert® EXM behind the output connections. All the cabinets in the UPS system must be connected to the user’s ground connection.

NOTE: The grounding and the neutral bonding arrangement must comply with the National Electrical Code and all the applicable local codes.

4. Identify and make power connections with the incoming cables according to 5 through 8 .

Common Input Connections

5.

For the common bypass and the main inputs, connect the AC input supply cables to the UPS input terminals

(A2-B2-C2-N1) and tighten the connections to 240 lb.-in. (27N-m) (M10 Bolt). Ensure the correct phase rotation.

NOTE: For the common bypass and the main inputs, the AC input cables must be connected to the bypass terminal

(A2-B2-C2-N1) but not the main input terminal (A2-B2-C2).




Split Bypass Connections

6. If a split bypass configuration is used, connect the AC input supply cables to the rectifier input terminals (A1-B1-

C1-N1) and the AC bypass supply cables to the bypass input terminals (A2 B2 C2-N1) and tighten the connections to 240 lb.-in. (27N-m) (M10 Bolt). Ensure the correct phase rotation.

NOTE: For the split bypass operation, ensure that the busbars between the bypass and the rectifier inputs are removed. The neutral line of the bypass input must be connected to that of the rectifier input.

Output System Connections - Ensure Correct Phase Rotation

7.

Connect the system output cables between the UPS output busbars (A-B-C N terminals) and the critical load and tighten the connections to 240 lb.-in.(27N-m) (M10 bolt).

WARNING! Risk of electrical shock. It can cause injury or death. If the load equipment will not be ready to accept the power on the arrival of the commissioning engineer, ensure that the system output cables are safely isolated at their termination.

WARNING! Risque de décharge électrique pouvant causer des blessures graves, voire mortelles. Si les

équipements branchés ne sont pas prêts à être alimentés à l’arrivée de l'ingénieur de mise en service, assurez-vous que les bornes des câbles de sortie du système soient isolées de façon sécuritaire.

Observe the battery cable polarity. Be sure that the battery connections, if any, are made with the correct polarity.

8. Refit all protective covers removed for cable installation.

4.3 Control Cables Details

4.3.1 Static Bypass Assembly Features

Based on your site’s specific needs, the UPS may require auxiliary connections to manage the battery system (the external battery circuit breaker, the battery temperature sensor), communicate with a personal computer or provide alarm signaling to external devices or for Remote Emergency Power Off (REPO). Terminations for these functions are located at the front of the static bypass assembly.

The main features are:

• Input and output dry contacts signal (one pair of contacts of relay)

• Emergency Power Off control (EPO)

• Environmental parameter input interface

• User communication (for data setting and user background monitor)

• Vertiv™Liebert® IntelliSlot interface

• Temperature detect interface


33


Figure 4.8 Static Bypass Assembly Connections to Display Cabinet and Options

Figure 4.9 Auxiliary Terminal Block Detail (Static Switch Assembly Front Panel)




4.4 Dry Contacts

The UPS provides the input dry contacts and the output dry contacts on the Auxiliary Terminal Block (Dry Contact Terminal

Block).

4.4.1 Input Dry Contacts

External input dry contacts are connected via the Dry Contact Terminal Block. Dry contacts are available for environment detection, battery ground fault detection, etc.

The UPS accepts external signal from zero-voltage (dry) contacts connected through external dry contact terminals produced, and these terminals are on the static bypass assembly. Through software programming, these signals become active when these contacts connect to +12V to ground (in the most left side). The cables connected to the monitor board must be separated from the power cables. Moreover, these cables should be double-insulated with a typical cross-section of

0.5 mm

2 to 1 mm

2 for a maximum connection length between 82 ft. and 165 ft. (25m-50m). The Dry Contact Terminal Block has several input dry contacts.

Figure 4.10 Input Dry Contacts

3

4

1

2

5

6

Table 4.3 Input Dry Contacts - J26

Pin Name Description

RIB_STATUS

GEN_MODE

GND_DRY

GND_DRY

BIB_STATUS

TMP_BATT_IN

Rectifier Input Breaker Status (Short for RIB Closed)

Generator Mode (N.O.)

Dry Ground

Dry Ground

Bypass Input Breaker Status (Short for BIB Closed)

Battery Temperature


35


Table 4.3 Input Dry Contacts - J26 (continued)


22

23

20

21

18

19

16

17

14

15

11

12

9

10

7

8

28

29

30

31

32

26

27

24

25

GND_DRY

+12V_DRY

LEGACY_MBB

—

GND_DRY

GND_DRY

ENV_DET

GND_DRY

GND_DRY

GND_DRY

CHG_SHUT

MIB_STATUS

GND_DRY

MBB_STATUS

MOB_STATUS

GND_DRY

GND_DRY

—

—

UT1_485+

UT2_485+

UT1_485-

UT2_485-

GND_MON

—

Dry Ground

+12V Power

Legacy Maintenance Bypass Breaker Status (Open for MBB Closed)

N/A

Dry Ground

Dry Ground

Environment Room Temperature (N.O.)

Dry Ground

Dry Ground

Dry Ground

Charger Shutdown (N.O.)

Maintenance Isolation Breaker Status (Open for MIB Closed)

Dry Ground

Maintenance Bypass Breaker Status (Short for MBB Closed)

Module Output Breaker Status (Open for MOB Closed)

Dry Ground

Dry Ground

N/A

N/A

RS485+ Channel #1

RS485+ Channel #2

RS485+ Channel #1

RS485+ Channel #2

Monitor Ground

N/A

4.4.2 Output Dry Contacts

The Dry Contact Terminal Block has three output dry contact relays (see Figure 4.11 on the facing page and Table 4.4 on the facing page .



Figure 4.11 Output Dry Contacts and EPO Wiring


Table 4.4 Output Dry Contact Relays

Port Pin Description

J23

J23

J24 3

1

4

6

5

5

2

3

1 Bypass Backfeed NO

Bypass Backfeed COM

Bypass Backfeed NC

On UPS NO

On UPS COM

On UPS NC

Input Backfeed NO

Input Backfeed COM

Input Backfeed NC

Port

J24

J25

J25

Pin

2

4

3

5

6

6

1

2

4

Description

Input Abnormal NO

Input Abnormal COM

Input Abnormal NC

On Battery NO

On Battery COM

On Battery NC

Low Battery NC

Low Battery COM

Low Battery NC

NOTE: All the auxiliary cables of the terminal must be double-insulated. The wire should be 20AWG-16AWG stranded for maximum runs between 80 ft. and 200 ft. (25m-60m), respectively.


37


4.4.3 Vertiv™ Liebert® BDC Interface

The Liebert® BDC interface is on the Dry Contact Terminal Block at J26. Refer to Figure 4.10 on page 35 for circuit details.

For further information, refer to the Vertiv™ Liebert® EXM BDC Manual (SL-25653), available at Vertiv Web site.

NOTE: All the auxiliary cables of the terminal must be double-insulated. The wire should be 20AWG-16AWG stranded for maximum runs between 80 ft. and 200 ft. (25m-60m), respectively.

NOTE: Refer to the Liebert® EXM Bypass Distribution Cabinet Manual (SL-25653), for the Liebert® BDC wiring.

4.4.4 Battery Cabinet Interface Connectors

The battery cabinet interface is on the Auxiliary Terminal Block at J22. Refer to Figure 4.12 below for circuit details.

Figure 4.12 Battery Cabinet Interface-J22

38

Pin

7

8

5

6

3

4

1

2

9

10

11

Name

12V_DRV

12V_DRV BCB drive

BCB STATUS

LIB Abnormal

GND_DRY

GND_DRY

BCB_ON

LLB STATUS

NC

NC

GND_DRY

Description

BCB driver signal

12V to trip BCB

BCB state signal

Lithium-Ion battery system operates abnormally

Dry ground

Dry ground

BCB on line signal

Aux Status of Local Load Bank Breaker for single/each unit testing

NC

NC

Dry ground




Pin

18

19

16

17

20

14

15

12

13

Name

GND_DRY

TMP_BATT

NC

12V_A

NC

GND_DRY

GND_DRY

BATT_GND_FAULT

Inverter Inhibit

Description

Dry ground

External Battery temperature

NC

Power

NC

Dry ground

Dry ground

Battery ground fault signal

To turn off the inverter, often used with maintenance interlock devices

The Pins of J22 are configurable in software. Pins 3, 4, 7, 8, 19, 20 can be configured to any of the inputs shown. The ones shown in the table above are the default inputs. There are additional inputs that can be configured in the table below.

NOTE: All the auxiliary cables of the terminal must be double-insulated. Wire should be 20AWG-16AWG stranded for maximum runs between 80 ft. and 200 ft. (25m-60m), respectively.

Table 4.5 J22 Additional Pin Assignments

Name Description

Battery Trip

BCB2 Status

BCB2_ON

BATT_GND_FAULT 2

SLBB Status

Request External request to trip the battery breaker

BCB state signal for BCB2

BCB on line signal for BCB2

Battery ground fault signal for battery string 2

Aux status of System Load Bank Breaker for parallel systems

4.4.5 EPO Input-Optional

NOTICE

Risk of exceeding internal voltage limits. It can damage to the equipment. Do not apply more than 12V to the

Emergency Power Off (EPO) input. Exceeding 12V on this input can damage the internal circuitry of the Vertiv™

Liebert® EXM and control boards. Exceeding 12V will also put the Liebert® EXM in an EPO state, and the unit will not reset, making it non-functional.

The UPS has an Emergency Power Off (EPO) function operated by a button on the control panel or by a remote contact provided by the user. The EPO button is under a hinged, clear plastic shield.

The J2 connector, in Figure 4.13 on the next page , is the remote EPO input interface. The EPO has Normally Open/Normally

Closed contacts that become active when shorting the terminals J2: 3 and J2: 4 or open the terminal connection J2: 2 and J2:

1

If an external Emergency Stop capability is required, it is connected at terminals J2: 1 and J2: 2 and at J2: 3 and J2: 4 on the monitor board. It also is connected to the NO/NC remote stop switch between these two terminals using the shielded cable

(see Figure 4.13 on the next page and Table 4.6 on the next page ). If this function is not used, terminals J2: 3 and J2: 4 must

be opened and J2: 1 and J2: 2 must be closed.


39


Figure 4.13 EPO Wiring and Signal Names for J2

Table 4.6 EPO Input Contact Relays-J2


3

4

1

2

EPO-NC

+ 12V

+ 12V

EPO-NO

EPO activated when opened to Pin 2

—

—

EPO activated when shorted to Pin 3

NOTE: The emergency stop action within the UPS shuts down the rectifier, the inverter and the static bypass. It does not internally disconnect the input power supply. To disconnect ALL power to the UPS, open the upstream feeder breakers after the remote EPO is activated.

NOTE: Normally Closed EPO–J2: 12, these terminals are supplied factory-linked on the bypass module on the UPS and must remain installed if using NO contacts.

NOTE: All auxiliary cables of the terminals must be double-insulated. The wire should be 20AWG-16AWG stranded for maximum runs between 80ft. and 200ft. (25m-60m), respectively.



Figure 4.14 Single UPS Remote Emergency Power Off


4.5 Parallel Cable Connections

Figure 4.15 Parallel Cable Wiring Diagram.


41






5 Installation Drawings

The diagrams in this section illustrate the key mechanical and electrical characteristics of the Vertiv™ Liebert® EXM UPS

System Cabinets (UPS, Vertiv™ Liebert® BDC and battery).

Figure 5.1 UPS Dimensions

5 Installation Drawings Proprietary and Confidential ©2023 Vertiv Group Corp.

43


Item

1

2

3

Description

Power Cable Entry 18" x 7.6" (457 x 193mm)

Control Cable Entry 4.3" x 3.2" (109 x 81mm)

Control Cable Entry 2.8" x 1.1" (71 x 28mm)

Item

4

5

6

Description

Power Cable Entry 3.5 x 12.6" (89 x 320mm)

Caster

Leveler

Notes To Figure

1.

24in. (610mm) minimum clearance above unit for air exhaust. 36in. (914mm) front access required for service.

No clearance required in rear except when using seismic anchoring: allow 5in. (127mm) clearance.

2.

Keep the cabinet within 15 degrees of vertical.

3.

The top and the bottom cable entry available through removable access plates. Remove, punch to suit conduit size and replace.

4. Unit bottom is structurally adequate for forklift handling.

5. The control wiring and the power wiring must be run in the separate conduits

6. All the wiring is to be in accordance with the national and the local electrical codes.

7.

Overall dimensions are shown with side panels.

Figure 5.2 UPS Main Components - Typical 10-40kVA Unit



Item

3

4

2

1

5

6

Description

Power Fuses

Main Inputs

Bypass input

Bypass I/O

Output

Battery Fuse

Figure 5.3 UPS Cable Connections - 10-40kVA Frames

Item

9

10

7

8

11

—

Description

Bypass Module

Power Modules

Internal Batteries

Replaceable Air Filter

Operator Control Panel

—


Item

3

4

1

2

Description

Batteries

Rectifier Input Phase A

Rectifier Input Phase B

Rectifier Input Phase C


Item

11

12

9

10

Description

Batt +

Batt N

Batt -

Output Phase A


45


Item

7

8

5

6

Description

Input Neutral

Bypass Input Phase A

Bypass Input Phase B

Bypass Input Phase C

Item

15

16

13

14

Description

Output Phase B

Output Phase C

Output Neutral

Ground




6 Option Installation

6.1 Vertiv™ Liebert® IntelliSlot Communication

The Vertiv™ Liebert® EXM has threeLiebert® IntelliSlot ports to allow field-installation of optional communication cards. The

Liebert® IntelliSlot cards communicate via Liebert’s proprietary Velocity protocol to cards that translate the information into such protocols as SNMP and Modbus. Other cards provide dry contact signals for external signaling of operating status.

TheLiebert® IntelliSlot communication ports may be installed or removed while the Liebert® EXM is operating.

6.2 Vertiv™ Liebert® IntelliSlot Web Card - SNMP/HTTP Network

Interface Card

This network interface card provides all real-time data and status information as SNMPv1 traps for connection to a 10/100baseT-Ethernet connection. The same card also will transmit the same status information and all measured parameters for display via a Web browser. The Liebert® IntelliSlot bays are on the right side of the control module and labeled as IntelliSlot1,

IntelliSlot2 and IntelliSlot3.

Table 6.1 Liebert® EXM Communication Options

Port Type And Location Labeled ID Name Of Fort Monitoring Device Supported

Left Liebert® IntelliSlot

Center Liebert® IntelliSlot

Right Liebert® IntelliSlot

IntelliSlot 1

IntelliSlot 2

IntelliSlot 3

IS-Relay

IS-Unity-DP

IS-Unity-LIFE

IS-485EXI

IS-Relay

IS-Unity-DP

IS-Unity-LIFE

IS-485EXI

IS-Relay

IS-Unity-DP

IS-Unity-LIFE

IS-485EXI

6 Option Installation Proprietary and Confidential ©2023 Vertiv Group Corp.

47


6.2.1 Vertiv™ Liebert® IntelliSlot Unity Cards - IS-UNITY-LIFE, IS-UNITY-S, IS-

UNITY-DP

IS-UNITY-LIFE: This standard card is used for communication between theLiebert® EXM and Vertiv™ Liebert® Trellis™ NMs and Vertiv™ LIFE™ services.

IS-UNITY-DP: This card can be used instead of the standard card if communication to two third party platforms is required.

Third-party platforms include SNMP and 485 (Modbus/BACnet) protocols. This card would still be used for communication between theLiebert® EXM and Liebert® Trellis™ NMS and Vertiv™ LIFE™ Services. All communication protocols are active simultaneously.

Liebert® IntelliSlot Dry Contact Card (IS-RELAY): Provides dry contact alarm information, including: On Battery, On Bypass,

Low Battery, Summary Alarm, UPS Fault and On UPS signals for communication to a remote monitoring system.

IS-485EXI: The Liebert® IntelliSlot 485 EXI Card provides connection to a Vertiv™ Liebert® SiteLink-E allowing Vertiv™

Liebert® SiteScan™ Web 4.0 monitoring and control of your Liebert equipment.

6.3 Vertiv™ Liebert® IntelliSlot Web Card-Optional

An optional Web card is available that provides remote access to the UPS. A wide variety of status and the summary information is available through an ethernet connection.

Figure 6.1 Liebert® IntelliSlot Web Card Display




6.4 Liebert® IntelliSlot Relay Card

TheLiebert® IntelliSlot Relay card (IS-RELAY) provides voltage free contact closures for remote monitoring of alarm conditions.

Delivering On Battery, On Bypass, Low Battery, Summary Alarm, UPS Fault and On UPS signals, the easy-to-install card integrates with AS/400 computers (additional cable required) and other relay contact monitoring systems.

The relay card is rated for 24 VAC/DC at 1A. and supported in any of the three Liebert® IntelliSlot bays on the Liebert® EXM.

6.4.1 Vertiv™ Liebert® IntelliSlot Relay Card Pin Configuration

The card has two terminals blocks, TB1 (green, numbered 1-9) and TB2 (black, 10-18), as shown in Figure 6.2 below .

Figure 6.2 Pin Location and Numbering

Refer to your Liebert product user manual for the pin configuration for the terminal blocks.

Table 6.2 Relay Card Pin Configuration

Pin Function Operation PIin Function

1

3

2

Common-Low

Battery

Low Battery

Low Battery

Closed if Low Battery point occurs.

Closed if battery is OK

10

11

12

Not Used

Not Used

Not Used

4

5

6

Common-UPS Fault

UPS Fault Closed if UPS fault occurs

UPS Fault Closed if no UPS failure

13

14

15

Summary Alarm*

Summary Alarm*

Common - Summary

Alarm

Operation

Closed if no alarm conditions are present

Closed if Summary Alarm occurs


49


Table 6.2 Relay Card Pin Configuration (continued)

Pin Function Operation

7

Common-On

Battery

8

9

On Battery

On Battery

Closed if On Battery power (Utility failure)

Closed if not On Battery power (Utility

OK)

PIin

16

17

18

Function

On UPS

On Bypass

Common-On Bypass

Operation

Closed if On UPS (inverter) power

Closed if On Bypass

6.4.2 Vertiv™ Liebert® IntelliSlot Relay Card Jumper Setup

The Liebert® IntelliSlot Relay Card has five jumpers, P3 through P7, as shown in Figure 6.3 below . Each jumper connects two

pins.

Figure 6.3 Jumber Location and Numbering

50

Table 6.3 Jumper Connections

Number

3

4

2

1

5

Jumer

P6

P5

P4

P3

P7

Relations

On Battery

UPS Fault

Low Battery

On Bypass

Summary Alarm

By default, all five jumpers have shunts installed. The two pins are shunted together to provide the functions shown in Table

6.3 above , allowing relay commons to be tied together.

The jumpers should be removed if there is any external voltage source that may intentionally or inadvertently be connected to the relay.




Removing the shunt from any two pins breaks the connection between the relay commons so they are not tied together.

NOTE: Refer to the Liebert® IntelliSlot Relay Card Manual (SL-23211) for additional details. the document is available at the Vertiv website, www.vertiv.com


51





7 Operation


7 Operation

WARNING! Risk of electrical shock. It can cause personal injury or death. This UPS has several circuits that are energized with high DC as well as AC voltages. Check for voltage with both the AC and the DC voltmeters before working within the UPS. Check for the voltage with both AC and DC voltmeters before making contact. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should be involved in installing the UPS or preparing the UPS for installation. When performing maintenance with any part of the equipment under power, service personnel and test equipment should be standing on rubber mats.

WARNING! Risque de décharge électrique pouvant causer des blessures graves, voire mortelles. Ce système

ASC comporte plusieurs circuits à haute tension c.a et c.c. Vérifiez les tensions au moyen de voltmètres c.a.

et c.c. avant d’utiliser le système ASC. Vérifiez les tensions avec des voltmètres c.a. et c.c. avant d’établir tout contact. Seuls des employés qualifiés et dûment formés portant un casque, des gants, des chaussures et des lunettes de sécurité adéquats doivent se charger d’installer le système ASC ou de le préparer pour l’installation. Les responsables de l’entretien et l’équipement d’essai doivent reposer sur des tapis de caoutchouc lors de toute intervention sur une pièce d’équipement sous tension.

The Vertiv™ Liebert® EXM operates in the modes shown in

Vertiv™ Liebert® EXM Operating Modes on the next page . This

section describes various kinds of operating procedures under each operating mode, including transfer between operating modes, UPS setting and procedures for turning On/Off inverter. As shown in the Liebert® EXM Battery Cabinet Manual (SL-

25656), the AC utility source is supplied through the input breaker, and the rectifier converts the alternating current into DC power. The inverter converts the AC power from the utility or DC power from an optional External Battery Cabinet into AC power for the load. The batteries power the load through the inverter in the event of a power failure. The utility source can also power the load through the static bypass. If the maintenance or repair of the UPS is necessary, the load can be switched without interruption in the service using the optional Vertiv™ Liebert® MBC.

7.1 Touchscreen Control Panel

The Touchscreen Control Panel of the Liebert® EXM is active whenever the UPS has input power. The touchscreen LCD on the front of the UPS permits:

• Logging in to the system.

• Customizing the user interface.

• Checking the status of the UPS and its external batteries, including all measured parameters, events and alarms.

• Determining when users logged in and out.

• Silencing alarms.

• Turning the UPS on and Off.

• Resetting Faults.

• Enabling Energy Saving Mode.

• Scan the QR code to obtain a copy of the Touchscreen Control Panel Manual.


53


54

.

7.2 Access Level Log-In

The Touchscreen Control Panel provides security by limiting the authority to change how the UPS operates. Each of the four access levels offers different authority:

1.

Observer-Viewing permission only, can choose graphic or text display, view logs and silence alarms; no PIN required.

2.

Operator-Permission to start and shut down the UPS, edit the display layout, test the battery, reset faults, enable or disable Eco Mode operation, enable equalize battery charging and acknowledge alarms; PIN required.

3.

Administrator-All functions of Operator plus permission to change PIN’s for Operator and Administrator level, configure the Status Gauge, set energy saving mode and change network communication protocols; PIN required.

4. Service-All functions of Administrator plus permission to alter system configuration and change Service PIN; PIN required.

7.3 Default PIN Numbers

Vertiv Services sets PIN’s when setting up the UPS. These default PIN’s may be changed by those with 3. above or 4. above

• Access . Default PIN’s are:

• Operator: 1234

• Administrator: 2345

NOTICE

Risk of unauthorized changes to operational settings. It can cause damage to the property. The default PIN numbers should be changed immediately to prevent unauthorized personnel from changing UPS operation or even shutting down the UPS. Refer to the Touchscreen Control Panel Manual (SL-26200), available at Vertiv’s

Web site, www.vertiv.com

for details.

7.4 Vertiv™ Liebert® EXM Operating Modes

The UPS is designed to operate as an on-line, double-conversion, reverse-transfer system in the following modes:

• Load on Inverter Mode

• Load on Battery Mode

• Auto-Restart Mode

• ECO Mode

• Load on Bypass Mode

• Module Redundancy Mode

• Frequency Converter Mode


7 Operation


• Power Conditioner Mode

• Maintenance Mode (Manual Bypass)

• Sleep Mode

• Paralleling Mode

• Output Voltage Adjustment Mode

• Generator Mode

NOTE: The user controls and indicators referred to in these procedures are detailed in the UPS control panel Manual

(SL-26200), available at Vertiv website, www.vertiv.com

NOTE: The audible alarm may sound at various points during these procedures. It can be canceled at any time by pressing the menu button (under any login), pressing alarms and then pressing alarms.

NOTE: This unit refers to some modes and conditions that are set or adjusted using proprietary service software. To take advantage of all the available features for the Vertiv™ Liebert® EXM , the unit must be commissioned by a Vertiv authorized engineer.

Load on Inverter Mode

Operating in the Load on Inverter Mode, the Liebert® EXM rectifier derives power from a utility AC source and supplies regulated DC power to the inverter, which regenerates precise AC power to supply the connected equipment. The rectifier also uses the utility source power to charge the batteries.

Module Redundancy Mode

When the Liebert® EXM is in Module Redundancy Mode, the load percentage is calculated using the available power module capacity or nameplate rating capacity, whichever capacity is lower.

Module redundancy mode can be set at the factory or by the user. A maximum of one module can be set for redundancy.

Availability of this feature depends on module capacity of the frame. Refer to the UPS Control Manual (SL-26200), for instructions on setting this feature. The manual is available at Vertiv’s website, www.vertiv.com

Example 1

• Two 20kVA power modules installed

• Nameplate rating capacity = 20kVA

• One power module in redundant mode

• Configured capacity = 20kVA

• Load = 20kVA

The Load percentage will be calculated based on the nameplate rating capacity = 20kVA capacity. In the event of a single power module fault, the system will signal a Loss of Redundancy Alarm and a Power Hardware Mismatch and continue in double-conversion mode and provide up to 20kVA capacity.

Example 2





• Load = 20kVA

7 Operation Proprietary and Confidential ©2023 Vertiv Group Corp.

55


56

The Load percentage will be calculated based on the available power module capacity = 40kVA capacity. In the event of a single power module fault, the system will signal a Loss of Redundancy Alarm and a Power Hardware Mismatch Alarm. The system will continue in double-conversion mode and provide up to 20kVa capacity.

Example 3





• Load = 30kVA

The Load percentage will be calculated based on the available power module capacity = Loss of Redundancy Alarm. The system will continue in double-conversion mode and provide up to 40kVA capacity.

Frequency Converter Mode

When the the Vertiv™ Liebert® EXM to is set to Frequency Converter Mode permits configuring the unit for 50Hz output, bypass is disabled and the battery is optional to support load. This mode can only be enabled at the factory or by Vertiv

Services.

Power Conditioner Mode

When the EXM is set to Power Conditioner Mode, the battery is disabled in this mode. This mode can only be enabled at the factory or by the Vertiv Services.

Load on Battery Mode - Requires Optional External Battery Cabinet

When utility AC power fails, the Liebert® EXM protects the critical load by instantaneously channeling battery power from optional External Battery Cabinets to the inverter, which continues supporting the critical load without interruption. When the utility power returns and is within acceptable limits, the Liebert® EXM automatically shifts back to Load on Inverter Mode, with the rectifier powering the critical load.

Auto-Restart Mode

The battery may become exhausted following an extended AC utility failure. The inverter shuts down when the battery reaches the End of Discharge voltage (EOD). The UPS may be programmed to “Auto Recovery after EOD” after a delay time if the AC utility recovers. This mode and any delay time may be programmed by the commissioning engineer.

Load on Bypass Mode

When the Liebert® EXM load is supplied by the bypass, the load is directly supported by utility power and is without battery backup protection.

The static transfer switch of the Liebert® EXM will shift the load from the inverter to the bypass without interruption in the AC power if the inverter is synchronous with the bypass and any of the following occurs:

• Inverter fails

• Inverter overload capacity is exceeded

• Inverter is manually turned Off by user

NOTE: If the inverter is asynchronous with the bypass, the static switch will transfer the load from the inverter to the bypass WITH interruption in the AC power to the critical load. This interruption will be less than 15ms (in 50Hz), or less than 13.33ms (in 60Hz). This interruption time may be altered by modifying the Output transfer interrupt time setting.


7 Operation


ECO Mode (Single - Module UPS System Only)

When ECO mode is selected, the Liebert® EXM switches inverter power from the UPS input to the bypass input to save energy by improving UPS efficiency. In this mode, the bypass is the preferred source. If the bypass voltage or frequency becomes outside preset limits, the UPS load is transferred back to the inverter.

Maintenance Mode

For maintenance or repair, the Liebert® EXM may be operated in maintenance mode. To place the Liebert® EXM in maintenance mode, follow the instructions in

Switching the UPS from Normal Operation to Maintenance Bypass on page 59

WARNING! Risk of arc flash and electric shock. It can damage to the equipment , injury and death The UPS input and output must be protected with external overcurrent protection devices. In maintenance mode, the input and output busbars remain energized and present an electric shock hazard.

WARNING! Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. L’entrée et la sortie du système ASC doivent être protégées par des dispositifs de protection de surintensité externes. En mode d’entretien, les barres omnibus d’entrée et de sortie demeurent sous tension et présentent un risque de décharge électrique.

Output Voltage Adjustment

This feature allows a Liebert Customer Engineer to adjust the Vertiv™ Liebert® EXM output voltage over a range of 5% to +5% of nominal. The output voltage adjustment can be used to compensate for any drop in line voltage that may occur when the

UPS is a significant distance from the protected load. In addition, it can be used to optimize the UPS output voltage for loads that operate more efficiently at a voltage different from the nominal Liebert® EXM output voltage.

Generator Mode

The Liebert® EXM UPS can be set up for operation in Generator Mode by a Vertiv Services engineer. The setup requires connecting Pins J26:2 to J26:4. The battery charger is disabled in Generator Mode.

7.5 UPS Startup

TheLiebert® EXM must be fully installed and commissioned before startup, and external power isolators must be closed. Once those general conditions are met, the UPS may be started.

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death.

During this procedure the output terminals will become live. If any load equipment is connected to the UPS output terminals, please check with the load user and ascertain whether it is safe to apply power to the load.

If the load is not ready to receive power, then ensure that it is safely isolated from the UPS output terminals.

NOTICE

WARNING! Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. Durant cette procédure, les bornes de sortie seront sous tension. Si un équipement chargé est raccordé aux bornes de sortie du système ASC, veuillez vous informer auprès de l’utilisateur de la charge s’il est sécuritaire d’appliquer une alimentation à la charge. Si la charge n’est pas prête à recevoir une alimentation, alors assurez-vous qu’elle est isolée sécuritairement des bornes de sortie du système ASC.


57


58

Risk of improper startup when feeding a downstream transformer. It can cause damage to the connected equipment. If the UPS is supplying a downstream transformer not provided by Liebert, the UPS should be put on maintenance bypass to energize it to mitigate the risk of in-rush current.

7.5.1 Startup Procedure

To start the UPS from a fully powered-down condition:

1.

Log in as Operator, Administrator or Service.

2.

Ensure that the Liebert Power Module Assembly ready switches are latched (in Down position).

3.

Close the external input circuit breaker and connect input power. The touchscreen activates.

4. The rectifier goes through its startup sequence and the bypass static switch is activated.

5. Close the external output circuit breaker .

6. Touch the OPERATE Tab.

7.

Touch the Inverter On button. When asked to confirm, touch Inverter On again

The power module run lights will start flashing green while the unit goes through the inverter startup sequence. After about a minute, the inverter will turn On, the static bypass will open and the power module run lights will be solid green.

8. Close the battery breaker.

7.5.2 Startup in Eco Mode

Eco Mode is available only on a single-module Vertiv™ Liebert® EXM .

• Log in as Operator , A dministrator or Service .

• Touch the OPERATE Tab.

• Touch Energy Saving Mode Activation Setup.

• In the drop-down menu, touch Enable .

• Touch Save .

The UPS load should now be supplied by the bypass with the inverter on standby. The status bar at the top of the screen will say ENERGY SAVING MODE ACTIVE.

7.5.3 Switching Between UPS Operation Modes

To switch from Load on Inverter Mode to Load on Bypass Mode

• Log in as Operator, Administrator or Service.


• Touch Inverter Off button to switch to Load on Bypass Mode.

• To continue, confirm turning Off the inverter when prompted.

NOTICE

Risk of power loss to connected load. It can cause damage to equipment. The load equipment is not protected from normal supply aberrations, such as spikes, sags and failure, when the Liebert® EXM load is supplied by the bypass or maintenance bypass.

To Switch from Load on Bypass Mode to Load on Inverter Mode

• Log in as Operator, Administrator or Service.


7 Operation



• Touch the Inverter On button.

• To continue, confirm turning On the inverter when prompted.

7.6 Switching the UPS from Normal Operation to Maintenance Bypass

Follow the procedure below to transfer the load from the UPS inverter output to the Maintenance Bypass system.

NOTICE

Risk of loss of power to the connected load. It can cause damage to the equipment. This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the operation of this system. Failure to follow these instructions will result in loss of power and possible damage to critical equipment.

Before performing this operation, read any messages on the touchscreen to be sure that bypass supply is regular and the inverter is synchronous with it. If those conditions are not present, there is a risk of a short interruption in powering the load.

This procedure assumes that UPS is operating normally.

1.


2.

Touch the OPERATE Tab.

3.

Touch the I nverter Off button.

4. To continue, confirm turning Off the inverter when prompted.

NOTE: Pressing Silence from the OPERATE tab cancels the audible alarm, but leaves the warning message displayed until the appropriate condition is rectified.

5. Open the Vertiv™ Liebert® MBC door to gain access to the Bypass Isolation Breaker (BIB), Maintenance Bypass

Breaker (MBB) and the Maintenance Isolation Breaker (MIB).

6. When the lamp indicator on the MBC is illuminated, press and hold the adjacent push button and remove the key from the lock (K0).

7.

Insert the key into the lock on the MBB and turn the key.

8. Close the MBB.

9. Verify the MBB is closed. Failure to close the MBB will interrupt power to the load.

10. Open the MIB.

11. Remove the key from the lock on the MIB. Insert the key into the lock (K0) and turn the key.

The UPS system is now isolated from the critical load.

For a single-input system, the Bypass Isolation Breaker (BIB) remains closed; this allows power to remain present at the UPS

input; refer to Figure 7.1 on the next page .

For a single-source, dual-input system, the Bypass Isolation Breaker (BIB) can be opened to further isolate the UPS from input

power; refer to Figure 7.2 on page 64 .

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death. Wait

5 minutes for the internal DC busbar capacitors to discharge before attempting to remove the internal protective barriers.


59


Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. Attendez

5 minutes que les condensateurs de barre omnibus c.c. internes se déchargent avant d’essayer de retirer les barrières de protection internes.

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death. Even with the UPS in maintenance bypass and Off, portions of the Vertiv™ Liebert® EXM system are still energized.

Service must be performed by properly trained and qualified personnel only.

WARNING! Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. Même lorsque le système ASC est en mode de dérivation d’entretien et hors tension, des parties du système EXM de Liebert demeurent sous tension. L’entretien ne doit être confié qu’à un personnel qualifié et dûment formé.

NOTICE

Risk of power loss to connected load. It can cause damage to the equipment. The load equipment is not protected from normal supply aberrations, such as spikes, sags and failure, when the Liebert® EXM load is supplied by the bypass or maintenance bypass.

Figure 7.1 One-Line Diagram, Single-Input UPS With 3-Breaker Maintenance Bypass Cabinet and Panelboard


7 Operation


Item Description

3

4

1

2

*Bypass AC Input 3 Wire + GND

BATTERY

UPS CABINET

Static Bypass

5 BIB (Bypass Isolation Breaker

*External Overcurrent Protection by Others

Item

8

9

6

7

10

Description

MAINTENANCE BYPASS CABINET



Output Busbar


Notes To Figure

1.


2.

The input and the bypass must share the same single source.

3.

The UPS system input and output cables must be run in the separate conduits.


7.7 Switching the UPS from Maintenance Bypass to Normal Operation

Follow the procedure below to transfer the load from the Maintenance Bypass system to the UPS inverter output.

These conditions must be met for this operation to proceed:

• The UPS must be operating normally

• The BIB breaker must be closed

• The UPS system must be supplying the load by the bypass.

NOTICE

Risk of loss of power to the connected load. It can cause damage to the equipment. This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the operation of this system. Failure to follow these instructions will result in loss of power and possible damage to critical equipment.

Before performing this operation, read any messages on the touchscreen to be sure that bypass supply is regular and the inverter is synchronous with it. If those conditions are not present, there is a risk of a short interruption in powering the load.

1.

Verify that the Vertiv™ Liebert® EXM is in supplying power to the load from the bypass.

NOTE: Pressing the Alarm Silence Switch cancels the audible alarm, but leaves the warning message displayed until the appropriate condition is rectified.

2.

Open the Vertiv™ Liebert MBC door to gain access to the Bypass Isolation Breaker (BIB), Maintenance Bypass

Breaker (MBB) and the Maintenance Isolation Breaker (MIB).

3.

When the Lamp indicator on the MBC is illuminated, press and hold the adjacent Push Button and remove the key from the lock (K0).

4. Insert the Key into the lock on the MIB, and turn the key.

5. Close the MIB .

6. Verify the MIB is closed. Failure to close the MIB will interrupt power to the load.

7.

Open MBB ..

8. Remove the Key from the lock on the MBB.


61


9. Insert the Key into the lock (K0) and turn the key.

10. The UPS system is now supplying power to the critical load.

11. Log in as Operator, Administrator or Service.


13. Touch the Inverter On button.

14. To continue, confirm turning On the inverter when prompted.


7 Operation


7.8 De-energize Vertiv™ Liebert® EXM with Maintenance Bypass

Cabinet

Notes

Risk of loss of power to the connected load. It can cause damage to the equipment. This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the operation of this system. This procedure will remove power from the critical bus. Take precautions by providing a backup power supply or shutting down equipment before de energizing the Liebert® EXM.

To de-energize the system:

1.


2.


3.

Touch the Inverter Off button.


5. Open all battery circuit breakers (s) including the internal battery breaker (if applicable).

6. If the MBC is a Vertiv cabinet, open the Maintenance Isolation Circuit Breaker (MIB). If the MBC is a customerissued switchgear or a non-Vertiv cabinet, open the breaker(s) that supply power to the critical bus.

7.

Open the Rectifier Input Circuit Breaker and Bypass Input Breaker (if dual input). If the MBC is a customer-issued switchgear or a non-Vertiv cabinet, open the breaker(s) that supply power to the UPS input and bypass input (if dual input).

8. Allow 5 minutes for all the DC circuits and capacitors to fully discharge.

9. Open the external feeder breaker to the MBC or bypass switchgear.

10. Install a Lockout/Tagout on the external feeder breaker to the MBC or bypass switchgear.

11. Use a digital multimeter to verify there is no AC or DC voltage present at the UPS input, output and bypass bus bars.

12. Use a digital multimeter to verify there is no AC or DC voltage present at the MBC BIB, MIB and MBB breakers.

7.9 De-energize Liebert® EXM Without Maintenance Bypass Cabinet

NOTICE

Risk of loss of power to the connected load. It can cause damage to the equipment. This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the operation of this system. This procedure will remove power from the critical bus. Take precautions by providing a backup power supply or shutting down equipment before de energizing the Liebert® EXM.

To de-energize the Liebert® EXM:

1.


2.


3.

Touch the Inverter Off button.


5. Open all battery circuit breakers(s) including the internal battery breaker (if applicable).

6. Open the UPS output circuit breaker(s).

7.

Open the UPS input circuit breaker and bypass circuit breaker (dual input systems only).

8. Allow 5 minutes for all the DC circuits and capacitors to fully discharge.


63


9. Use a digital multimeter to verify there is no AC or DC voltage present at the UPS input, output and bypass bus bars.

Figure 7.2 Typical Configuration for Single UPS

64

Item Description

2

1

* Bypass AC Input 4 Wire + GND (See

The customer must supply shunt trip breakers with 120V coils to the bypass and the rectifier inputs.

below

)

* Rectifier AC Input 4 Wire + GND (See

The customer must supply shunt trip breakers with 120V coils to the bypass and the rectifier inputs.

below

)

3 Battery

* External Overcurrent Protection By Others

Item

4

5

6

Description

UPS

Static Bypass


Notes To Figure

1.


2.

The input and the bypass must share the same single source.

3.

A neutral is required from the system AC input source. Vertiv recommends a full-capacity neutral conductor and grounding conductors.



6. The customer must supply shunt trip breakers with 120V coils to the bypass and the rectifier inputs.


7 Operation


7.10 Parallel Operations - Determine Control Panel Firmware Version

Parallel operation differs depending on the software in the control menu. To determine which version is installed on the UPS, activate the touchscreen menu, touch the Context Menu and touch About.

If the firmware is V1.1, perform the appropriate steps in

Parallel Operations - Software Version 1.1

below .

7.11 Parallel Operations - Software Version 1.1

7.11.1 De-energize a Vertiv™ Liebert® EXM Parallel System - Software Version 1.1

To shut down a UPS parallel system using V1.1 controller software:

1.


2.

Verify that the system and the connected load are prepared for shutdown.

3.


4. Touch the Inverter Off button. A pop-up window states that the system is operating in a multi-module system and asks whether to control one inverter or the entire system.

5. Touch System . The power module run lights will start flashing yellow while the unit goes through the inverter shutdown sequence. After a few seconds, the inverter will turn Off, the static bypass will close and the power module run lights will be Off. All UPS units in the system will go to bypass.

6. Check the parallel switchgear.

NOTICE

Risk of loss of power to the connected load. It can cause damage to the equipment. The following procedure will remove power from the critical bus. Before beginning these steps, shut down the connected load or transfer the connected load to an input power supply not dependent on the Liebert® EXM system that is being de energized.

a. If the parallel switchgear is a matching Vertiv cabinet, open the Maintenance Isolation Circuit Breaker

(MIB).

b. Open all Module Output Breakers (MOB).

7.

Open the input breaker for each UPS and the breaker feeding the Maintenance Bypass Breaker (MBB) in the parallel switch gear.

The system is now de-energized, and its output power supply is Off.


65


66

7.11.2 Re-energize a Vertiv™ Liebert® EXM Parallel System - Software Version 1.1

To restart Liebert® EXM parallel system from a fully powered-down condition using V1.1 controller software:

1.


2.

Close the input breakers for all UPS’s.

3.

The LCD on each UPS will turn On, the LCD icons will begin flashing green and the rectifier will start.

The bypass and output icons will illuminate green.

The battery LED will illuminate red.

4. Close the Module Output Breakers (MOB) circuit breaker to each UPS.

5. Close the MIB circuit breaker.

WARNING! Risk of electric shock. It can cause damage to the equipment, injury and death. The following procedure will supply power to the critical bus. Before beginning, notify all personnel that input power is being supplied to the circuits. Verify that the connected load is prepared for input current.


7.

Touch the Inverter On button. A pop-up window states that the system is operating in a multi-module system and asks whether to start one inverter or the entire system.

8. Touch System .

The LCD icons will start flashing green while the unit goes through the inverter startup sequence. After about a minute, the inverter will turn On, the static bypass will open and the icons will be solid green.

9. Close all battery breakers.

7.12 Emergency Shutdown with EPO

This circuit has been designed to switch Off the UPS in emergency conditions (e.g., fire, flood, etc.). The system will turn Off the rectifier, inverter and stop powering the load immediately (including the inverter and bypass), and the battery stops charging or discharging.

If the input utility is present, controls of the UPS will remain active; however, the output will be turned Off. To remove all power from the UPS, the external feeder breaker should be opened.

7.13 Auto Restart

When the main and bypass sources fail, the UPS draws power from the battery system to supply the load until the batteries are depleted. When the UPS reaches its end of discharge (EOD) threshold, it will shut down.

The UPS will automatically restart and enable output power:

• After utility power is restored

• If “Auto Recovery after EOD Enabling” is enabled in the UPS configuration (set by factory or by Vertiv™ Services)

• After the “Auto Recovery after EOD Delay Time” expires (the default delay is 10 minutes)

During the auto recovery delay, the Liebert® EXM will be charging its batteries to provide a safety margin for equipment shutdown if input power fails again.


7 Operation


If the “Auto Recovery after EOD Enabling” feature is disabled, the system must be restarted manually.

7.14 Reset After Shutdown for Emergency Stop (EPO Action) or Other

Conditions

Once all appropriate measures have been taken to correct the problem indicated by the alarm message appearing on the

Operator Control Panel, carry out this procedure to restore the UPS to regular operation following an EPO action or for the following reasons: Inverter Overtemperature, Cut-Off Overload, Battery Overvoltage, excessive switching (BYP: XFER COUNT

BLOCK), etc.

When the user confirms that the fault is cleared:

1.


2.


3.

Touch the yellow Reset button to clear the Emergency Power Off state.

4. Press the Inverter On button on the right side of the Operator Control Panel for longer than 2 seconds (after the rectifier has qualified).

NOTE: The rectifier will start automatically 5 minutes after the overtemperature fault is cleared.

5. After the EPO button is pressed, if the input utility is removed, the UPS will shut down completely. When input utility is restored, the EPO condition will clear, and the UPS will enable the static bypass and restore the output.

7.15 Battery Protection

7.15.1 Battery Undervoltage Warning

Before the end of discharge, the Vertiv™ Liebert® EXM displays a low battery warning. After this warning, the battery has the capacity for 5 minutes discharging with full load (default time). The Liebert® EXM can be user-configured to display this warning from 3 to 60 minutes before end-of-discharge.

7.15.2 Battery End-of-Discharge (EOD) Protection

If the battery voltage is lower than the end-of-discharge voltage, the battery converter will be shut down. Refer to Table 8.11

on page 72 .

7.16 Operation

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death. The

Liebert® EXM contains high voltages internally. Components that can only be accessed by opening the protective cover with tools cannot be serviced or replaced by the user. Only properly trained and qualified service personnel are authorized to remove the protective covers.


67


WARNING! Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. L’armoire Liebert® EXM contient des tensions élevées à l’interne. L’utilisateur ne peut ni entretenir ni remplacer des composants accessibles uniquement en ouvrant le couvercle de protection avec des outils. Seul du personnel de service qualifié et dûment formé est autorisé à retirer les couvercles de protection.

The Liebert® EXM operates in the modes shown in Table 7.1 below . This section describes various kinds of operating

procedures under each operating mode, including transfer between operating modes, UPS setting and procedures for turning

On/Off inverter.

Table 7.1 UPS Operating Mode

Operating Mode Description

Load on

Inverter

Load on

Bypass

Maintenance

Mode

NORMAL

BYPASS

MAINT

UPS powers the load

The load power supply is provided by the static bypass. This mode can be regarded as a temporary transition mode between the Load on Inverter Mode and Load on Bypass Mode, or a temporary abnormal operating status.

UPS shuts down, the load is connects to the mains through the Liebert MBC. In this mode, the load is not protected against input utility power fluctuations such as spikes, sags and failure.

As shown in the Vertiv™ Liebert® EXM Battery Cabinet Manual (SL-25656), the AC utility source is supplied through the input breaker, and the rectifier converts the alternating current into DC power. The inverter converts the AC power from the utility or DC power from an optional External Battery Cabinet into AC power for the load. The batteries power the load through the inverter in the event of a power failure. The utility source can also power the load through the static bypass.

If maintenance or repair of the UPS is necessary, the load can be switched without interruption in service using the optional

Vertiv™ Liebert® MBC.

7.17 Static Bypass Switch

The circuit block labeled “ Static Bypass ” contains an electronically controlled switching circuit that enables the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line. During normal system operation, the load is connected to the inverter and the inverter contactor is closed; but in the event of a UPS overload or inverter failure, the load is automatically transferred to the static bypass line.

To provide a clean (no-break) load transfer between the inverter output and static bypass line, the static switch activates, connecting the load to bypass. To achieve this, the inverter output and bypass supply must be fully synchronized during normal operating conditions. This is achieved through the inverter control electronics, which make the inverter frequency track that of the static bypass supply, provided that the bypass remains within an acceptable frequency window.

NOTICE

Risk of power loss to connected load. It can cause damage to the equipment. The load equipment is not protected from normal supply aberrations, such as spikes, sags and failure, when theLiebert® EXM load is supplied by the bypass or maintenance bypass.


7 Operation


8 Specifications and Technical Data

8.1 Conformity and Standards

The Vertiv™ Liebert® EXM has been designed to conform to the following standards:

Safety

Surge

Harmonicss

Electrical Fast Transient

ESD

FCC

Radiated Immunity

Conducted Immunity

Low-Frequency Signals

Transportation

ISO

Misc

UL1778 4th Edition, CSA 22.2 107.3

IEC 61000-4-5 Criteria B

IEC 61000-3-4

IEC 61000-4-4, Criteria B

IEC 61000-4-2, Criteria B

Part 15, Class A

IEC 61000-4-3, Criteria A

IEC 61000-4-6, Criteria A

IEC 61000-2-2 Criteria A

ISTA Procedure 1H

9001

OSHA, ASME, NEMA PE-1

The Liebert® EXM has UL and c-UL approval.

8.1.1 Energy Star Certification

The Liebert® EXM UPS is ENERGY STAR certified satisfying “ENERGY STAR Program Requirements Product Specification for Uninterruptible Power Supplies (UPSs) - Eligibility Criteria, Version 2.0.”

8.2 UPS Environmental

The Liebert® EXM is designed to operate under the following environmental conditions without damage or degradation in electrical operating characteristics:

Table 8.1 Environmental Requirements

Item Requirement

Acoustical Noise, dBA, at 55 in. (1.4m) 59

Operating Altitude

4922 ft. (1500m) above mean sea level; 1% maximum kW derate per 328 ft. (100m) rise between 4922 and 9843 ft.

(1500m and 3000m)

Relative Humidity

Operating Temperature, °F (°C)

95%

104 (40)

UPS Storage/Transport Temperature,

°F (°C)

-4 to 158 (-20 to 70)

8 Specifications and Technical Data Proprietary and Confidential ©2023 Vertiv Group Corp.

69


Table 8.2 UPS Mechanical Characteristics

Rated Power, kVA 10-40

Dimensions, W x D x H, in (mm)

Weight, lb (kg)

Color

Protection Degree IEC (60529)

23-5/8 x 39-3/8 x 78-3/4 (600 x 1000 x 2000)

See

Weights for Vertiv™ Liebert® EXM 10-40kVA Frame on page 15

for weights.

RAL 7021 (Black)

IP20

10

15

20

30

40

8.3 UPS Electrical Characteristics

Refer to additional circuit breaker notes in

Accessory Fuses and Back-Feed Breaker Wiring on page 28

NOTE: The breakers and cables used must be in accordance with the NEC ANSI/NFPA 70. A disconnect breaker must be provided for the AC input, the DC input and the AC output. Recommended cable sizes are suitable for operation at a maximum temperature of 104°F (40°C).

Table 8.3 UPS Currents and Terminals-Input (for Single-Input Unit, 208V Operation)

Unit Rating

Nominal

Input Current

Maximum Input

Current

OCBD

Device

Rating

Bolt Size

75C Wire, Rated

Current Ampacity

Copper

Wire

Aluminum

Wire

10

15

20

30

40

30

45

59

89

119

34

51

68

102

136

45

70

90

150

175

M10

M10

M10

M10

M10

65

85

115

175

230

Table 8.4 UPS Currents and Terminals-Input (for Dual-Input Unit Only, 208V Operation)

Unit Rating

Nominal

Input Current

Maximum Input

Current

OCBD Device

Rating

Bolt Size

75C Wire, Rated

Current Ampacity

(1) #6

(1) #4

(1) #2

(1) 2/0

(1) 4/0

Copper Wire

(1) #4

(1) #2

(1) 1/0

(1) 4/0

(2) 1/0

Aluminum

Wire

30

45

59

89

119

34

51

68

102

136

45

70

90

150

175

M10

M10

M10

M10

M10

65

85

115

175

230

(1) #6

(1) #4

(1) #2

(1) 2/0

(1) 4/0

(1) #4

(1) #2

(1) 1/0

(1) 4/0

(2) 1/0




10

15

20

30

40

Table 8.5 UPS Currents and Terminals-Bypass Input (for Dual-Input Units, 208V Operation)

Unit Rating

Nominal

Input Current

OCBD Device Rating Bolt Size

75C Wire, Rated

Current Ampacity

Copper

Wire

56

83

28

42

111

40

60

70

110

150

Table 8.6 UPS Currents and Terminals-Output 208V

Unit Rating

Nominal

Output Current

OCBD Device

Rating

M10

M10

M10

M10

M10

Bolt Size

65

85

115

175

230

75C Wire, Rated Current

Ampacity

(1) #6

(1) #4

(1) #2

(1) 2/0

(1) 4/0

Copper

Wire

Aluminum Wire

(1) #4

(1) #2

(1)1/0

(1)4/0

(2)1/0

Aluminum

Wire

(1) #4

(1) #2

(1)1/0

(1)4/0

(2)1/0

10

15

20

30

40

56

83

28

42

111

40

60

70

110

150

Table 8.7 AC/AC Efficiency, Loss and Air Exchange

AC /AC Efficiency Data

Rated AC Input Voltage

Input Voltage Range, Startup/Operating

Input Voltage Range, Operating

M10

M10

M10

M10

M10

65

85

115

175

230

Load on Inverter (dual conversion), % 95.6% Max

Inverter Efficiency (DC/AC) (Battery at Nominal Voltage 288 VDC and Full-Rated Linear Load)

Rated Power, kVA

Load on Battery, %

10-40K

94.8% Max

Heat Losses & Air Exchange

Rated Power, kVA

Load on Inverter, kW

No Load, kW

Maximum Forced Air Cooling

(Front Intake, Rear Exhaust), L/sec (m3/hr)

Heat Dissipation, BTU/Hr (kWH)++

10

0.45

0.3

32 (115)

2217 (0.65)

15

0.675

0.3

32 (115)

3245 (0.95)

20

0.9

0.3

32 (115)

3843 (1.13)

Table 8.8 Rectifier Input

Parameter 10-40 kVA

30

1.35

0.6

(1) #6

(1) #4

(1) #2

(1) 2/0

(1) 4/0

64 (231)

6189 (1.81)

208/120V or 220/127V, 50/60Hz, 3-Phase, 4-Wire Plus Ground

102-146VAC

72-146VAC (72-102VAC Derating)

40

1.8

0.6

64 (231)

7610 (2.23)


71


Table 8.8 Rectifier Input (continued)

Parameter 10-40 kVA

Frequency

Power Factor

Input Current, Rated

Input Current, Max

THD

50 or 60Hz (40-70Hz Range)

0.99 Full Load, 0.98 Half Load

29/44/59/88/117

33/51/68/101/135

5% Full load

Table 8.9 Recommended Lug Sizes (Compression Type) M10, 3/8" bolt

Cable Size T&B Copper one Hole

#8AWG

#6AWG

#4AWG

#2AWG

#1AWG

#1/0AWG

#2/0AWG

#3/0AWG

#4/0AWG

250kcmil

300kcmil

350kcmil

400kcmil

500kcmil

54132

54136

54140

54143

54148

54109

54110

54111

54112

54174

54179

256-30695-112

256-30695-1403

256-30695-339

Table 8.10 Battery Cabinet System-UPS and Battery Cabinet

UPS Rating, KVA Battery Cabinet Breaker Maximum Battery Current, (A)

10-40 225A 187

Table 8.11 Battery DC Intermediate Circuit

Parameter 10-40 kVA

Battery Bus Voltage

Number of Lead-Acid Cells

Float Voltage

Temperature Compensation

Ripple Voltage

T&b Aluminum one hole

60148

60154

60160

—

—

—

60104-TB

60109

60114

60118

60124

60130

60136

60142

Battery Cabinet Size, (mm)

320, 600, 880s

288

144 = (24 x 6 cell [12V] blocks), nominal

2.25V/cell, selectable from 2.2 - 2.3V/cell

-3.0mV/°C, selectable from 0 to -5.0mV/°C around 77°F (25°C) or 86°F (30°C) or inhibit

≤1%



Table 8.11 Battery DC Intermediate Circuit (continued)

Parameter 10-40 kVA

Ripple Current

Boost Charge Voltage

Boost Control

End of Discharge

Battery Charge

Battery Charging Power

Maximum Current

≤5%

2.35V/cell (selectable from 2.30-2.40V/cell)

Float-boost current trigger 0.050 C10 (selectable 0.030-0.070)

Boost-float current trigger 0.010 C10 (selectable 0.005-0.025)

24 hr safety time-out (selectable 8-30 hr)

Boost charge mode inhibit also selectable

1.63 V/cell for lower EOD timer. (10-45 minutes, 15 default)

1.75 V/cell for upper EOD timer. (46-180 minutes, 60 default)

2.35 V/cell (selectable from 2.3-2.4V/cell)

Constant current and constant voltage charge mode

Programmable auto trigger or inhibit of boost mode

UPS (kVA) 10, 15, 20, 30, 40

Battery Charging Power (kW) 1.5, 2.25, 3.0, 4.5, 6

Maximum Charging Current (A) 4, 7, 9, 13, 18

Table 8.12 Inverter Output to Critical Load

Table Parameter 10-40 kVA

Rated AC Voltage

Frequency *

Overload Capacity

Fault Current

Non-Linear Load Capability

Neutral Current Capability

Steady State Voltage Stability

Voltage Regulation

Phase Balance

Transient Voltage Response

THD

Sync Frequency Range


50/60

105% - 110% of full load for 60 minutes at 104°F (40°C) ambient

110% - 125% of full load for 10 minutes at 104°F (40°C) ambient

125% - 150% of full load for 60 seconds at 104°F (40°C) ambient

>150% of full load for a minimum of 200 milliseconds at 104°F (40°C) ambient

Short Circuit for 200 ms

100%

170%

±1% (balanced load)

±1% for balanced load

±5% for 100% unbalanced load

120° ±1° for balanced load

120° ±15°± for 100 unbalanced load

5%

<1.5% (0-100% linear load)

<4% (0-100% non-linear load)

Rated Frequency ± 2Hz (selectable ± 0.5 to ± 3Hz)



73


Table 8.12 Inverter Output to Critical Load (continued)

Table Parameter 10-40 kVA

Frequency Slew Rate

Frequency Regulation

0.1-3Hz

±0.1% (Single Power Module)

±0.25% (Two Power Modules)

±5% Voltage Adjustment Range

Table 8.13 Bypass Input

Parameter 10-40 kVA

Rated AC Voltage

Rated Current: 208V

220V

Overload

Upstream Protection, Bypass Line

Current Rating of Neutral Cable, A

Frequency, Hz

Transfer Time Between Bypass and Inverter, ms

Bypass Voltage Tolerance, %VAC

Bypass Frequency Tolerance, %

Synchronization-Window


29/44/59/88/117

26/39/52/79/105

110% load, Continuous

Thermomagnetic Circuit Breaker, rated up to 125% of nominal output current

1.7*ln

50 or 60

Uninterrupted Transfer: <1ms

Interrupted Transfer: <20ms(40,60,80,100, can be selected)

Upper Limit: +10, +15 or +20, default +15

Lower Limit: -10, -20, -30 or -40; default: -20 (delay time to accept steady bypass voltage: 10 sec)

±10% or ± 20% default: ± 20%

±0.5, 1,2,3Hz

Default: ±2Hz




9 Maintenance

9.1 Safety Precautions

Observe the safety precautions in

Important Safety Instructions on page 1

Only properly trained and qualified personnel should perform maintenance on the UPS system.

Observe all of the warnings and cautions below before performing any maintenance on the UPS system and associated equipment. Also observe the manufacturer's safety precautions pertaining to the battery, along with the battery safety precautions in this document.

WARNING! Risk of electrical shock and high short circuit current. It can cause damage to the equipment, injury and death. Always identify connecting wiring prior to disconnecting any wiring. Do not substitute parts except as authorized by Vertiv. Maintain the UPS cabinets free of foreign materials such as solder, wire cuttings, etc. Contact Vertiv Services if there is any uncertainty about the procedures to follow or if personnel are unfamiliar with the circuitry.

WARNING! Risque de décharge électrique et de présence de courant de court-circuit élevé pouvant entraîner des dommages matériels, des blessures et même la mort. Identifiez tous les circuits de connexion avec de débrancher des câbles. Ne remplacez aucun composant sans l'autorisation expresse d'Vertiv. Assurez-vous que les armoires d'ASC sont exemptes de matériaux étrangers tels que des résidus de soudure, des bouts de câble, etc. Communiquez avec Vertiv Services si vous doutez de la procédure à suivre ou si les circuits ne vous sont pas familiers.

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death. Only

Vertiv or Vertiv-trained service personnel should work on this equipment. Both AC and DC high voltages are present in lethal amounts within this equipment. Extreme care should be taken when working around UPS equipment. Always identify the source of connecting wiring prior to disconnecting. Mark any disconnected wires, so they can be properly reconnected. Do not substitute parts except as authorized by Vertiv. Maintain the UPS cabinets free of foreign materials such as solder, wire cuttings, etc. Call Vertiv Services if you are not sure of the procedures to follow or if you are not familiar with the design or operation of the equipment.

WARNING! Risque d'arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. L'entretien et la réparation de cet équipement doivent être confiés exclusivement à un personnel qualifié de Vertiv™ ou formé par Vertiv. Des hautes tensions c.a. et c.c. mortelles sont présentes dans cet équipement. Faites preuve d'une grande prudence lorsque vous travaillez à proximité d'un système

ASC. Identifiez toujours la source d'un câble de raccordement avant de le débrancher. Identifiez les câbles déconnectés afin de pouvoir les reconnecter correctement Ne remplacez aucun composant sans l'autorisation expresse de Vertiv. Assurez-vous que les armoires d'ASC sont exemptes de matériaux étrangers tels que des résidus de soudure, des bouts de câble, etc. Communiquez avec Vertiv Services si vous doutez de la procédure à suivre ou si la conception ou le fonctionnement de l'équipement ne vous sont pas familiers.

9 Maintenance Proprietary and Confidential ©2023 Vertiv Group Corp.

75


WARNING! Risk of electrical shock and high short circuit current. It can cause damage to the equipment, personal injury and death. Extreme caution is required when performing maintenance. Be constantly aware that the UPS contains high DC as well as AC voltages. With input power Off and the DC source disconnected, high voltage at filter capacitors and power circuits should be discharged within 5 minutes. However, if a power circuit failure has occurred, assume that high voltage may still exist after shutdown. Check with a voltmeter before making contact. AC voltage will remain on the bypass and output circuit breakers and the static bypass switch, unless associated external circuit breakers are opened. Check for voltage with both AC and DC voltmeters before making contact. When the UPS is under power, both the operator and any test equipment must be isolated from direct contact with earth ground and the UPS chassis frame by using rubber mats. Some components within the cabinets are not connected to chassis ground. Any contact between floating circuits and the chassis is a lethal shock hazard. Use differential oscilloscopes when measuring a floating circuit Exercise caution that the test instrument exterior does not make contact, either physically or electrically, with earth ground. In case of fire involving electrical equipment, use only carbon dioxide fire extinguishers or others approved for use in fighting electrical fires.

WARNING! Risque de décharge électrique et de présence de courant de court-circuit élevé pouvant entraîner des dommages matériels, des blessures et même la mort. Les opérations d'entretien requièrent une extrême prudence. Soyez toujours conscient du fait que le système ASC contient des tensions c.c. et c.a. élevées. Une fois l'alimentation d'entrée coupée et la source d'alimentation c.c. débranchée, la haute tension aux condensateurs de filtrage et aux circuits d'alimentation devrait se dissiper en moins de 5 minutes. En cas de défaillance d'un circuit d'alimentation, toutefois, il importe de présumer qu'une tension élevée est présente même après l'arrêt. Vérifiez toujours les tensions avec un voltmètre avant d'établir des contacts. Les disjoncteurs de dérivation et de sortie, de même que le commutateur statique de dérivation, continueront d'afficher une tension c.a. à moins que les disjoncteurs externs associés ne soient ouverts. Vérifiez les tensions avec des voltmètres c.a. et c.c. avant d'établir tout contact. Lorsque le système ASC est sous tension, les responsables de l'entretien et l'équipement d'essai doivent reposer sur des tapis de caoutchouc pour prévenir tout contact direct avec le sol et avec le châssis du système lors des interventions. Certains composants à l'intérieur des armoires ne sont pas connectés à la masse du châssis. Tout contact entre les circuits flottants et le châssis présente un risque de décharge mortelle. Utilisez des oscilloscopes différentiels lors des mesures d'un circuit flottant. Il importe de veiller à ce que l'extérieur des équipements d'essai n'entre pas en contact physique ou électrique avec le sol. En cas d'incendie associé à du matériel

électrique, n'utilisez que des extincteurs à dioxyde de carbone ou homologués pour la lutte contre les incendies d'origine électrique.

9.2 Battery Maintenance

WARNING! Risk of electrical shock and arc flash. It can cause damage to the property, injury and death. These maintenance procedures will expose hazardous live parts. Refer servicing to properly trained and qualified personnel.

WARNING! Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la mort. Les procédures d’entretien ci-dessous exposent des composants sous tension dangereuse.

Les interventions d’entretien doivent être confiées à du personnel qualifié et dûment formé.


9 Maintenance


9.3 Battery Safety Precautions

Servicing of batteries should be performed or supervised by personnel experienced with the batteries and the required precautions. Keep unauthorized personnel away from the batteries.

When replacing the batteries, use the same number and type of batteries.

WARNING! Risk of electrical shock. It can cause personal injury and death. Check for voltage with both AC and DC voltmeters before working within the UPS. Check for voltage with both AC and DC voltmeters before making contact. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should be involved in installing the UPS or preparing the UPS for installation. When performing maintenance with any part of the equipment under power, service personnel and test equipment should be standing on rubber mats. Lead-acid batteries contain hazardous materials. Batteries must be handled, transported and recycled or discarded in accordance with federal, state and local regulations.

Because lead is a toxic substance, lead-acid batteries must be recycled rather than discarded. Do not dispose of battery or batteries in a fire. The battery may explode. Do not open or mutilate the battery or batteries.

Released electrolyte is harmful to the skin and eyes. It is toxic. The following precautions must be observed when working on batteries:

Remove watches, rings and other metal objects.

Use tools with insulated handles.

Wear rubber gloves and boots.

Do not lay tools or metal parts on top of batteries.

Disconnect charging source prior to connecting or disconnecting battery terminals.

Determine whether the battery is grounded. If it is grounded, remove source of ground.

Contact with any part of a grounded battery can result in electrical shock. The likelihood of such shock will be reduced if such grounds are removed during installation and maintenance.


77


WARNING! Risque de décharge électrique pouvant causer des blessures graves, voire mortelles. Vérifiez les tensions au moyen de voltmètres c.a. et c.c. avant d'utiliser le système ASC. Vérifiez les tensions avec des voltmètres c.a. et c.c. avant d'établir tout contact. Seuls des employés qualifiés et dûment formés portant un casque, des gants, des chaussures et des lunettes de écurité adéquats doivent se charger d’installer le système ASC ou de le préparer pour l'installation. Les responsables de l'entretien et l’équipement d’essai doivent reposer sur des tapis de caoutchouc lors de toute intervention sur une pièce d’équipement sous tension. Les batteries au plomb-acide renferment des matières dangereuses. Les batteries doivent être manipulées, transportées, recyclées ou jetées conformément aux règlements fédéraux, provinciaux et municipaux. Étant donné que le plomb est une substance toxique, les batteries au plomb-acide doivent être recyclées plutôt que mises au rebut. Ne jetez jamais de batteries au feu car elles risquent d’exploser. Vous ne devez ni ouvrir ni percer les batteries, car l'électrolyte qui s'en écoulerait est nocif pour la peau et les yeux.

Cet électrolyte est toxique. Lorsque vous travaillez avec des batteries, prenez les précautions suivantes

:Retirez montre, bagues et tout autre objet métallique.

Utilisez des outils dont le manche est isolé.

Portez des gants et des bottes de caoutchouc.

Ne posez aucun outil ni pièce métallique sur le dessus d’une batterie.

Déconnectez la source de chargement avant de brancher ou de débrancher les bornes d’une batterie.

Vérifiez si la batterie est mise à la terre. Le cas échéant, éliminez la cause de la mise à la terre.

Le contact avec toute partie d'une batterie mise à la terre peut provoquer une décharge électrique. Pour réduire de tels risques d'accident, débranchez les prises de terre avant de procéder à l’installation ou à l'entretien.

Regular maintenance of the battery module is an absolute necessity. Periodic inspections of battery and terminal voltages, specific gravity, and connection resistance should be made. Strictly follow the procedures outlined in the battery manufacturer's manual. (See battery manufacturer’s web site.)

Valve-regulated lead-acid batteries do require periodic maintenance. Although they do not require maintenance of electrolyte levels, visual inspections and checks of battery voltage and connection resistance should be made.

NOTICE

Risk of damage to battery cases. Do not use cleaners on the batteries. Solvents can make the battery cases brittle. Use only a dry cloth or a cloth moistened in water

Since individual battery characteristics are not identical and may change over time, the UPS module is equipped with circuitry to equalize battery cell voltages. This circuit temporarily increases charging voltage to maintain flooded type battery cells at full capacity.

WARNING! Risk of electric shock, explosive reaction, hazardous chemicals and fire. It can cause damage to the equipment, personal injury and death. Do not use equalize charging with valve-regulated, lead-acid batteries, such as those used in Liebert® battery cabinets. Refer to the battery manufacturer’s manual, available on the manufacturer’s Web site, for specific information about equalize charging.

Risque de décharge électrique, de réaction explosive, d’incendie et d’exposition à des produits chimiques dangereux pouvant entraîner des dommages matériels, des blessures et même la mort. N'utilisez pas de charge d’égalisation avec des batteries d'accumulateurs au plomb à régulation par soupape, comme celles utilisées dans les armoires de batterie Liebert®. Reportezvous au manuel du fabricant des batteries, disponible sur le site Web du fabricant, pour obtenir des renseignements précis sur la charge d’égalisation.


9 Maintenance


9.4 Limited-Life Components

The Vertiv™ Liebert® EXM UPS has a design life well in excess of 10 years. Well-maintained units can continue to provide economic benefits for 20 years or more. Long-life components are used in the UPS wherever practical and cost effective.

However, due to the currently available component material, manufacturing technology limitations and the general function and use of the component, a few components in your Liebert UPS will have a shorter life cycle and require replacement in less than 10 years.

The following components utilized in your UPS system have a limited life cycle and are specifically exempt from warranty. To prevent a wear-out failure of one of these components affecting your critical load operations, Vertiv recommends these components be periodically inspected and replaced before the expected expiration of their life cycle. The expected life of each component listed below is simply an estimate and is not a guarantee. Individual users may have site-specific requirements, maintenance and other environmental conditions that affect the length of the component’s useful life cycle. .

Table 9.1 Component Service Life

Component Expected life Replace in :

Air filters

Power Modules & Static Bypass Assembly

Frame Fans

5 years

20 years

10 years

Check four times per year

18 years

8 years

NOTE: Component Expected Life requires ambient temperature conditions (<25° C). If temperature conditions are higher, expected life will be shorter.

In most cases, replacement components must exactly match the original component specifications. These replacement components are not readily available from third-party component distributors. For assistance with your specific component specifications, replacement component selection and sourcing, call 1-800-LIEBERT. For customers using Vertiv Services’ preventive maintenance services, periodic inspection of these components is part of this service, as well as recommending component replacement intervals to customers to avoid unanticipated interruptions in critical load operations.

9.5 Routine Maintenance

Become thoroughly familiar with the equipment, but at no time go beyond the specific procedures in this manual while performing maintenance or correcting a malfunction. If you have any doubt as to what must be done, call Vertiv Services at

800-543-2378 for further instructions. The UPS is designed for unattended operation, but does require some common sense maintenance.

Keep good records-Troubleshooting is easier if you maintain historical service records.

Keep the UPS free of dust and any moisture.

Keep the UPS cool:

• Battery systems must be kept in the range of 72-77°F (22-25°C) in order to meet design specifications for capacity and longevity.

• The UPS will reliably meet all the performance specifications at temperatures up to 104°F (40°C), and can be slightly derated for operation at even higher temperatures. However, the performance and longevity will be optimized when the UPS is operated at the same temperature as the batteries

Keep connections tight.

Tighten all connections at installation and at least annually thereafter. (See

Torque Requirements on page 82 ).


79


9.5.1 Record Log

Set up a maintenance log to record the scheduled checks and any abnormal conditions.

The log should have space for all the metered data including phase readings, alarm messages, UPS mode of operation, air filter replacement date and observation notes. A second log should be maintained for the battery module as directed by the battery manufacturer.

Vertiv recommends a periodic walk-through inspection of the UPS and battery rooms to check for visible and audible indications of problems. Log the inspection, metered parameter indications and any discrepancies.

9.5.2 Air Filters

The air filters must be inspected and serviced on a regular schedule. The period between inspections will depend upon the environmental conditions. Under normal conditions, the air filters will require cleaning or replacement approximately every two months.

All Vertiv™ Liebert® EXM models have replaceable filter elements behind the grille in the front of the unit. This element can be changed with the UPS operating by opening the outer door. The Liebert® EXM air filters are washable and reusable. One set of air filters is shipped with each Liebert® EXM.

Abnormal or dusty conditions will require more frequent cleaning and replacement of air filters. Inspect installations in new buildings more often, then extend the inspection period as experience dictates.

Replacing Air Filters

Installing the two air filter sizes in a Liebert EXM requires only a Phillips screwdriver. Each filter is held in place by a bracket on either side of each filter. Refer to

Air Filters above for details about filter maintenance.

To replace a filter:

1.

Open the UPS front door and locate the filters on the back side of the front door (see

Air Filter Replacement on the facing page ).

2.

Remove one bracket and loosen the screw on the second bracket. The second bracket need not be removed.

3.

Remove the dust filter to be replaced.

4. Insert the clean filter.

5. Reinstall the bracket, tightening the screw securely.

6. Tighten the screw on the second bracket.


9 Maintenance

Figure 9.1 Air Filter Replacement

Vertiv™ Liebert® EXM UPS User Manual item

2

1

Description

Replaceable Air Filters

Operator Control Panel


81


9.5.3 Torque Requirements

All electrical connections must be tight.

Table 9.2 below through Table 9.3 below provide the torque values for the connections in the UPS and batteries. Use these

values unless the equipment is labeled otherwise.

Table 9.2 Busbars (for Power Wiring)

Bolt Shaft Size LB-in (NM)

192 (22)

428 (48)

3/8" (M10)

1/2" (M12)

Table 9.3 Terminal Block with Compression Lugs (for Control Wiring)

AWG Wire Size Or Range

#22 - #14

LB-in (Nm)

3.5 to 5.3 (0.4 to 0.6)

9.6 Detecting Trouble

It is important that the operator check the instrument readings if abnormal equipment performance is suspected. Any metered value that differs appreciably from normal could mean an impending malfunction, and should be investigated.

Items to check on the various UPS display screens include:

1.

The output voltage of all the phases should be within 2% of normal voltage. Output currents on each phase should not normally differ by more than 20%. If a greater difference is noted, the load is unbalanced and corrective action should be taken to redistribute the load, if possible.

2.

If the UPS has not operated on battery power during the last 10 hours, the batteries should require little charging current. Battery mimic should indicate normal DC voltage with relatively little battery charge current.

3.

The input current on each phase should be within 10% of the average input current. Alarm messages indicate malfunction or impending malfunction. A daily check of the Operator Control Panel will help to provide an early detection of problems. Refer

UPS Status Messages on page 87 to interpret alarm messages.

4. Tracing a problem to a particular section is facilitated by alarm messages and the metered parameter indications.

These are stored in the Status Reports and can be displayed at the Operator Control Panel or at an optional terminal.

NOTE: If the UPS system has a blown fuse, the cause should be determined before you replace the fuse. Contact

Vertiv Services.

9.7 Reporting a Problem

If a problem occurs within the UPS, review all alarm messages along with other pertinent data. This information should be given to the Vertiv services dispatcher. Call 800-543-2378 to report a problem or to request assistance.

9.8 Corrective Actions

Recommended corrective actions for each alarm message on the Operator Control Panel and the Remote Alarm Status Panel may be found in

UPS Status Messages on page 87


9 Maintenance


1

1

2

1

2

9.9 Recommended Test Equipment

Table 9.4 below lists recommended test equipment and tools required to maintain, troubleshoot and repair the UPS module.

Instruments of equivalent range and accuracy may be substituted. All instruments should be calibrated and be within the current calibration cycle. Calibration data for the instruments should be maintained in equipment-history files and the instruments labeled for audit and verification.

Table 9.4 Recommended Test Equipment and Tools

Qty Test Equipment Manufacturer Model or Type

Oscilloscope

Voltage Probes

Voltage Probes

Digital Multi-meter

Tool Kit

Tektronix, H-P or Fluke



Fluke

N/A

DC to 50 MHz

10X, with 10 ft. Cable

100X, with 10 ft. Cable

8060, with Test Leads

Standard electrical contractor tools


83




9 Maintenance


Appendices

Appendix A: Hazardous Substances

Table A.1 Hazardous Substances or Elements

Hazardous Substances

Part Name

Lead

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Chrome

(Cr6+)

Polybrominated

Biphenyl

(PBB)

Polybrominated

Diphenyl Ethers

(PBDE)

Hex copper stud

PCBA

AC capacitor

DC capacitor

Fan

Cables

LCD

Sensors

Large-medium power magnetic components

Circuit breaker / rotating switch

Semiconductors

Battery (when applicable)

Insulation monitoring device (when applicable)

X

X

X

X

X

X

X

X

X

X

X

X

X a a a a a a

X a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a

X a - Means the content of the hazardous substances in all the average quality materials of the part is within the limits specified in SJ/T-11363-2006

X - Means the content of the hazardous substances in at least one of the average quality materials of the part is outside the limits specified in SJ/T11363-2006

Vertiv has been committed to the design and manufacturing of environment-friendly products. It will reduce and eventually eliminate the hazardous substances in the products through unremitting efforts in research. However, limited by the current technical level, the following parts still contain hazardous substances due to the lack of reliable substitute or mature solution:

1.

All solders in the products contain lead.

2.

Copper alloy contains lead.

3.

Backlight bulb contains mercury.

4. The ceramic materials of the ceramic capacitor, the copper terminals and copper leads of metallic film capacity contain lead.

Appendices Proprietary and Confidential ©2023 Vertiv Group Corp.

85


5. The glass of resistor contains lead.

6. The glass of LCD contains lead, and the backlight lamp contains mercury.

7.

The lead in the battery is determined by the battery feature and technical levels.

8. The insulation monitoring device contains lead and PBDE.

About Environment Protection Period: The Environment Protection Period of the product is marked on the product. Under normal working conditions and normal use of the products observing relevant safety precautions, the hazardous substances in the product will not seriously affect the environment, human safety or property in the Environment Protection Period starting from the manufacturing date.

About Battery: The battery life is dependent on the ambient temperature and charging / discharging times. The battery life will be shortened if the battery is used under high temperature or in deep discharging status. Refer to the manufacturer’s product literature for details.


Appendices


Appendix B: UPS Status Messages

Table B.1 below shows all event messages as they appear in the current status area of the LCD or the history log, along with a

description and recommended actions, if any.

Table B.1 UPS Status Messages

Event Message Description / Suggested Action (if any)

Comm. Fail

Battery End of

Discharge

Mains Volt.

Abnormal

The CAN communication between internal monitor and rectifier/inverter/bypass fails. Contact Vertiv™ Services at 800-543-2378 for assistance.

Battery

Overtemp

The battery temperature is over the limit. Check the battery temperature and ventilation.

Ambient

Overtemp

The ambient temperature is over limit. Check the ventilation of UPS room.

Replace Battery Battery should be replaced. Contact Vertiv Services at 800-543-2378 for assistance.

Battery Low Prewarning

Before the end of discharging, battery undervoltage pre-warning should occur. After this pre-warning, battery should have the capacity for 3 minutes discharging with full load. The time is user configured from 3 to 60 minutes.

Shut down the load in time.

Inverter turned off due to low battery voltage.

Check the utility failure and try to fix it.

Mains voltage exceeds the upper or lower limit and results in rectifier shutdown.

Check the input line-to-neutral voltage amplitude of rectifier.

Mains

Undervoltage

Mains Freq.

Abnormal

Rectifier Fault

Rectifier

Overtemp

Mains voltage is undervoltage (120V~132V).

Check the input line-to-line voltage amplitude of rectifier.

Mains frequency is out of limit range and results in rectifier shutdown.

Check the rectifier’s input voltage frequency.

Rectifier fault; contact Vertiv Services at 800-543-2378 for assistance.

The temperature of the heat sink is too high to keep the rectifier running.

The UPS can recover automatically. Check the environment and ventilation.

The charger has failed. Contact Vertiv Services at 800-543-2378 for assistance.

Input fuse is open. Contact Vertiv Services at 800-543-2378 for assistance.

Charger Fault

Input Fuse Fail

Control Power 1

Fail

Mains Phase

Reversed

Soft Start Fail

Control Power 1 has failed or has been lost. Contact Vertiv Services at

Input phase sequence is reversed. Contact Vertiv Services at

800-543-2378

800-543-2378 for assistance.

for assistance.

Bypass Unable to Trace

Rectifier could not start due to low DC bus voltage. Contact Vertiv Services at 800-543-2378 for assistance.

This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage is beyond the normal range.

The amplitude threshold is fixed for positive and negative 10% rating.

This alarm automatically resets once the bypass voltage goes normal.

1. First verify that the bypass voltage and frequency displayed on the panel is within the selected range. Note here the rated voltage and frequency are specified by “Output voltage level” and “Output frequency level” respectively.


87


Table B.1 UPS Status Messages (continued)


Bypass

Abnormal

Inverter

Asynchronous

Inverter Fault

2. If the displayed voltage is believed to be abnormal, then verify the bypass voltage and frequency presented to the UPS. Check the external supply if it is found to be faulty.

Contact Vertiv Services at 800-543-2378 for assistance.

This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage exceeds the limit.

This alarm automatically resets once the bypass voltage goes normal.

First check if there are some relevant alarms such as “Bypass disconnect open”, “Bypass phase reverse” and “Mains neutral lost”. If they appear, solve them first.

1. Then verify that the bypass voltage and frequency displayed on the panel is within the bypass limit. Note here the rated voltage and frequency are specified by “Output voltage level” and “Output frequency level” respectively.

2. If the displayed voltage is believed to be abnormal, then verify the bypass voltage and frequency presented to the UPS. Check the external bypass supply if it is found to be faulty. If the utility is likely to trigger this alarm frequently, the bypass limit can be changed a little larger through the configuration software according to the customer’s agreement.


This alarm is triggered by an inverter software routine when the inverter and bypass waveforms are misaligned by more than 6 degrees in phase. This alarm resets automatically once the condition is no longer true.

1. First check if the alarm “Bypass unable to trace” or “Bypass abnormal” occurs. If so, solve it first.

2. Verify the waveform of the bypass voltage. If it is too distorted, ask the customer to verify and seek any possible measurements.


This alarm indicates a fault condition exists within the inverter.


Fan Fault

Inverter STS

(relay) Fail

Bypass STS Fail

At least one of the cooling fans failed. Contact Vertiv Services at 800-543-2378 for assistance.

At least one of the static switches of inverter side is open or short circuit. This fault is locked until power off. Contact Vertiv™ Services for assistance at 800-543-2378 for assistance.

At least one of the static switches of bypass side is open or short circuit. This fault is locked until power off.


Output Fuse Fail At least one of the output fuses is open. Contact Vertiv Services at 800-543-2378 for assistance.

Control Power 2

Fail

Control Power 2 is abnormal or lost. Contact Vertiv Services at 800-543-2378 for assistance.

Unit Overload

The UPS is confirmed to be overload when the load arises above 105% nominal rating.

The alarm automatically resets once the overload condition is removed.

1. Confirm that the alarm is true by checking the load percent indicated on the LCD panel to determine which phase is being overloaded.

2. If the alarm is true, measure the actual output current to verify that the indications are valid. Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load sharing error can also leads to the alarm.


System Overload

The UPS parallel system is confirmed to overload when the total load arises above 105% nominal rating for the set basic number of

UPSs. The alarm automatically resets once the overload condition is removed.

1. Confirm that the alarm is true by checking the system load percent indicated on the LCD panel to determine which phase is being overloaded.





Unit Overload

Timeout

Bypass Phase

Reversed

Load Impact

Transfer

Transfer

Timeout

2. If the alarm is true, measure the actual output current to verify that the indications are valid. Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load sharing error can also leads to the alarm.

The UPS is confirmed to overload and the overload times out.

NOTE: The highest loaded phase will indicate overload timing-out first.

NOTE: : When the timer is active, then alarm “unit overload” should also be active as the load is above nominal.

NOTE: : When the timer has expired, the inverter Static Switch is opened and the load transferred to bypass. The inverter shutdown and will restart after 10 seconds.

NOTE: If the load decreases lower than 95% after 5 minutes, the system will transfer back to inverter mode.

Confirm that the alarm is genuine by checking the load percent indicated on the LCD. If an overload is indicated then check the load, and investigate any additional load connected prior to the alarm (if applicable).

The phase sequence direction of bypass voltage is reversed.

Normally, the phase of Phase B lags 120 degrees behind Phase A, and the phase of Phase C lags 120 degrees behind Phase B.

Verify that the phase rotation of the bypass supply presented to the UPS is correct, and rectify it if it is wrong. Contact Vertiv Services at 800-543-2378 for assistance.

A transfer to bypass occurred due to a large step load. The UPS should recover automatically. Turn On connected equipment in sequential order to reduce the step loading of the inverter.

The load is on bypass power due to excessive number of transfers that occurred within the last hour.

The UPS will recover automatically and will transfer the load back to inverter power within an hour.

Load Sharing

Fault

DC Bus

Overvoltage

UPS working within a parallel system are not sharing load current correctly. Contact Vertiv™ Services at 800-543-2378 for assistance.

DC Bus

Abnormal

Shut off inverter due to abnormal DC bus voltage.


System Transfer

The whole paralleled UPS system transferred to bypass at the same time. This message will appear on the UPS which passive transfer to bypass.

Rectifier, inverter and battery converter were shutdown because DC bus voltage is too high.

Check whether there is a fault in rectifier side. If no, then check whether overload occurs.

Restart the inverter after resetting the fault. If fault does not clear, contact Vertiv Services at 800-543-2378 for assistance.

The LBS setting is active. The UPS is acting as an LBS leader/follower in a dual bus configuration.

LBS Active

Battery ground fault

Inverter turned

On manually

Inverter turned

Off manually

Battery ground fault from dry contact signal. Contact Services at

Manual turn On via front panel

Manual turn Off via front panel

800-543-2378 for assistance.

EPO Emergency power off

Transfer Confirm Interrupted transfer confirm

Transfer Cancel Interrupted transfer is cancel

Unit Off Confirm Unit turned off confirm


89




System Off

Confirm

Fault Reset

Alarm Silence

Turn On Fail

Alarm Reset

System turned off confirm

Fault reset

Alarm silence

Turn on fail

Audible alarm reset

Load on Bypass UPS load is supplied by the bypass

Load on Inverter UPS load is supplied by the inverter

Load on Battery UPS load is supplied by the battery

Output Disabled UPS output disabled

Maint.

Disconnect

Closed

Reserved

Maintenance disconnect closed

—

Battery Boost

Charging

Battery

Discharging

Battery Period

Testing

Batt. Capacity

Testing

Batt. Maint.

Testing

Inverter in

Setting

Rectifier in

Setting

Output

Disconnect

Open

Output disconnect open

Battery Reverse Connect the battery again and check the wiring of batteries.

No Battery Check the battery and the wiring of batteries.

Auto start

BCB closed

BCB open

Battery Float

Charging

After UPS was shutdown at EOD, inverter auto starts when utility is restored.

BCB closed from dry contact signal.

BCB open from dry contact signal.

Battery is float charging.

Battery is boost charging.

Battery is discharging.

Battery is period self-testing.

Battery is capacity self-testing.

Battery is maintenance self-testing.

Inverter is in parameter setting.

Rectifier is in parameter setting.





Batt. Converter

Fault

Battery converter output voltage beyond limits or battery fuse failed. Battery converter shuts down. Battery backup not available.

Operation Invalid This record is registered following an incorrect operation.

Byp. Abnormal

Shutdown

Both bypass and inverter voltages unavailable. Load interruption.

Mains Neutral

Lost

Battery Room

Alarm

AC input mains reference neutral not detected.

Environment in battery room needs attention.

Rec Flash

Update

Rectifier firmware is being updated.

Inv Flash Update Inverter firmware is being updated.

Monitor Flash

Update

LBS abnormal

Monitor firmware is being updated.

LBS is abnormal.


91





Vertiv.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA

©2023 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness here, Vertiv Group Corp. assumes no responsibility, and disclaims all liability, for damages resulting from use of this information or for any errors or omissions.

SL-25648_REV13_06-23

No results