Unipower INV5000-HS Specifications

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Unipower INV5000-HS Specifications | Manualzz

INV2500-HS and INV5000-HS

TELECOM INVERTERS

OPERATING MANUAL

www.unipowertelecom.com

PRICE: $25.00

Manual No. INV-802-4

02/05/04 INV2500HS-5000HS-Man-RevD

© 2004 UNIPOWER Corp.

All Rights Reserved

UNIPOWER Telecom, Division of UNIPOWER Corporation

NORTH AMERICA • 3900 Coral Ridge Drive, Coral Springs, Florida 33065, USA • Tel: +1 954-346-2442 • Fax: +1 954-340-7901 • [email protected]

EUROPE • Parkland Business Centre, Chartwell Road, Lancing BN15 8UE, ENGLAND • Tel: +44(0)1903 768200 • Fax: +44(0)1903 764540 • [email protected]

SECTION

13.0

14.0

15.0

16.0

9.0

10.0

11.0

12.0

17.0

18.0

6.0

7.0

8.0

1.0

2.0

3.0

4.0

5.0

CONTENTS

TOPIC

Introduction

Important Features

Product Line

Safety Warnings

Warranty

Unpacking and Inspection

Description of Operation

Front and Back Panel Descriptions

Electrical Specifications

Mechanical Dimensions of Shelves

Safety and Industry Standards

Operating Information

Parallel Operation

Installation and Testing

Inverter Application

Replacing An Inverter Module

Maintenance

Troubleshooting Guide

PAGE

14

16

18

19

10

10

6

8

20

20

5

5

6

3

4

4

1

1

ILLUSTRATIONS

FIGURE TITLE

7

8

5

6

3

4

1

2

9

10

INV2500-HS and INV5000-HS Inverter Models

Front & Back of INV2500-HS Module

Front & Back of INV5000-HS System

Mechanical Dimensions of INV5000-HS & INVR2U-HS Shelves

INV2500-HS Inverter Output Waveforms

INV2500-HS & INV5000-HS Overload Characteristic

Connections for ORing Form C Relay Outputs on INV5000-HS

Inverter Module Pin Connections

Two 115VAC INVR2U-HSs in Parallel Using AC Distribution Panel

Output Connections for Inverters

PAGE

12

13

13

15

7

9

2

7

17

17

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

INV2500-HS AND INV5000-HS TELECOM INVERTERS

OPERATING MANUAL

1.0

INTRODUCTION

1.1

This Operating Manual should be read through carefully before installing and operating the INV2500-HS inverter modules or INV5000-HS inverter systems. See Figure 1.

1.2

The INV2500-HS is a 2500 volt-ampere hot-swap, telecom inverter module. It converts a nominal 48VDC input into a 115VAC output at 50 or 60Hz. These modules are designed to go into a 19-inch, hot-swap compatible shelf,

INVR2U-HS, which holds one or two units. When two units are used in this shelf they are automatically connected in parallel and synchronized to produce 5000 volt-amperes at 115VAC output (44 amperes). Or they can be operated in a 1+1 redundant mode at 2500 volt-amperes.

1.3

For 230VAC output at 50 or 60 Hz there are two inverter systems, designated

INV5000-HS, which use two INV2500-HS units connected in series in their shelf to give the higher voltage. See the product line designation in Section

3.0. The output is 230VAC at 22 amperes, or 5,000 volt-amperes.

1.4

The 48VDC nominal input has a range of 42 to 56VDC. The inverters achieve

90% efficiency and 7VA per cubic inch power density. Input and output are both circuit breaker protected. They have high surge capability for starting loads such as motors, but the output breaker quickly trips if power attempts to flow back into a faulted inverter.

1.5

These inverters can be paralleled for higher output power or for N+1 redundant applications. They are fully isolated from the battery. Front panel LEDs indicate inverter status, and Form C relay alarm contacts are available on the back. The units are self-cooled by internal fans.

2.0

IMPORTANT FEATURES

The following is a summary of the important features of the INV2500-HS and

INV5000-HS inverters: u u u

Two Mounting Positions High: 3.5 Inches

2500VA Output for INV2500-HS

5000VA Output for INV5000-HS

1

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

(a). INV2500-HS Inverter Module

(b). INV5000-HS Inverter System

Figure 1. INV2500-HS and INV5000-HS Inverter Models

2

u u u u u u u u u u u u u u u u

7VA per Cubic Inch Power Density

115VAC Output at 22 or 44 Amperes

230VAC Output at 22 Amperes

Low Distortion 50 or 60Hz Sine Wave

42 to 56VDC Input

Fully Isolated from Battery Input

90% Typical Efficiency

Up to 300% Surge Capability

Powers Reactive Loads

Circuit Breaker Input & Output Protection

N+1 Redundant Operation

19- or 23-Inch Rack Mounting

Overtemperature Protection

Form C Relay Alarm Contacts

LED Status Indicators

Rear Safety Cover on Shelves

3.0

PRODUCT LINE

Table 3-1 115VAC Hot-Swap Inverter Modules

MODEL INPUT OUTPUT FREQ.

INV2500-HS-60

INV2500-HS-50

42-56VDC 115VAC@22A

42-56VDC 115VAC@22A

60Hz

50Hz

Table 3-2 115VAC Hot-Swap Inverter Shelf

MODEL RACK SIZE HEIGHT CAPACITY

INVR2U-HS 19 or 23 Inches 2RU (3.5 Inches) 2 INV2500-HS

Table 3-3 230VAC Inverter Systems

MODEL INPUT OUTPUT FREQ.

INV5000-HS-60

INV5000-HS-50

42-56VDC 230VAC@22A

42-56VDC 230VAC@22A

60Hz

50Hz

Table 3-4 Option to INV2500-HS & INV5000-HS

CODE OPTION

E Floating AC neutral output terminal.

NOTE: 1. For standard models of INV2500-HS and INV5000-HS,

AC neutral is connected to case/shelf ground together

with AC ground.

2. Add “E” as a suffix to the model number.

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

3

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

4.0

SAFETY WARNINGS

4.1

These telecom inverters have hazardous external and internal voltages. They should be handled, tested and installed only by qualified technical persons who are trained in the use of power systems and are well aware of the hazards involved.

4.2

The input and output terminals are at hazardous voltage potentials. Do not touch these areas when power is applied.

4.3

When operating these inverters, the chassis ground terminal must be connected to safety ground to minimize electrical shock hazard and to ensure low

EMI (electromagnetic interference).

4.4

The internal voltages are at hazardous potentials. The inverter covers should not be removed. There are no user-serviceable components in these units.

Removing the covers of the inverters will void the warranty.

4.5

WARNING: When using “floating neutral” (Option E) in the INV2500-HS module or INV5000-HS system, the AC neutral output terminal “N” is floating with respect to chassis ground. A neutral-to-ground connection must be re-established external to the inverter and be in compliance with the requirements of the end-use application.

5.0

WARRANTY

All products of UNIPOWER Telecom, a division of UNIPOWER Corporation, are warranted for two (2) years from date of shipment against defects in material and workmanship. This warranty does not extend to products which have been opened, altered or repaired by persons other than persons authorized by the manufacturer or to products which become defective due to acts of

God, negligence or the failure of customer to fully follow instructions with respect to installation, application or maintenance. This warranty is extended directly by the manufacturer to the buyer and is the sole warranty applicable. EXCEPT FOR THE FOREGOING EXPRESS WARRANTY,

THE MANUFACTURER MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING, BUT

NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICU-

LAR PURPOSE. As the sole and exclusive remedy under this warranty, the manufacturer, at its option, may repair or replace the non-conforming product or issue credit, provided the manufacturer’s inspection establishes the existence of a defect. To exercise this remedy, the buyer must contact the manufacturer’s Customer Service Department to obtain a Return Material

Authorization number and shipping instructions. Products returned without prior authorization will be returned to buyer. All products returned for repair must be shipped freight prepaid to

UNIPOWER. If the buyer fails to fully comply with the foregoing, the buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property or any other incidental or consequential losses) shall be available to the buyer.

4

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

6.0

UNPACKING AND INSPECTION

6.1

This INV2500-HS or INV5000-HS was carefully tested, inspected and packaged for shipment from our factory. Upon receipt of the unit, it should be carefully unpacked and inspected for any damage in shipment.

6.2

If there is evidence of damage, do not attempt to test the unit. The freight carrier should be notified immediately and a claim for the cost of the inverter should be filed with the carrier for direct reimbursement. Be sure to include the model and serial number of the damaged unit in all correspondence with the freight carrier. Also save the shipping carton and packing material as evidence of damage for the freight carrier’s inspection.

6.3

UNIPOWER Telecom will cooperate fully in case of any shipping damage investigation.

6.4

Always save the packing materials for later use in shipping the unit. Never ship the inverter without proper packing.

7.0

DESCRIPTION OF OPERATION

7.1

The INV2500-HS modules employ MOSFET and IGBT power semiconductor switches with advanced, high-frequency, pulse modulation techniques to produce a low-distortion, 50 or 60Hz sine wave output with 90% efficiency and 7VA per cubic inch power density. A synchronization circuit lets two or more inverter modules operate in parallel with their outputs in phase-synchronization and current shared.

7.2

The INV5000-HS inverter system consists of two INV2500-HSs operated in series for a 230VAC output at 5,000 volt-amperes (22A). The series connection of the units is made internally in the shelf. Each of the two inverter modules has its own input and output breakers, indicator LEDs and Form C relay contacts. The two inverter modules in the INV5000-HS are different in that their outputs are 180 o out of phase with each other. Therefore these modules must not be hot-swapped by the user.

7.3

Two INV2500-HS inverter modules in an INVR2U-HS shelf are automatically connected in parallel in the shelf and become an inverter system with a

115VAC output at 5,000 volt-amperes (44A).

7.4

For the purpose of this manual, the INV5000-HS and two INV2500-HS

5

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL modules in an INVR2U-HS shelf are both 5,000 VA inverter systems and will be referred to as an INV5000 where the generic meaning is con-

veyed. While the two different shelves are identical in size and appearance, they differ in their internal module connection (series or parallel).

8.0

FRONT AND BACK PANEL DESCRIPTIONS

8.1

Figure 2 shows the front and back of an INV2500-HS inverter module. On the left side of the front panel of the INV2500-HS is the input circuit breaker. To the right are the two cooling fans and the output circuit breaker. Above the output breaker from the top are the green LED indicators for Input OK, Sync OK and

Output OK.

8.2

On the INV2500-HS back panel on the right side is the hot-swap connector which contains all power and signal connections.

8.3

Figure 3 shows the front and back of an INVR2U-HS or INV5000-HS. Each front half (side A or side B) of this inverter is a INV2500-HS. The back panel has a transparent plastic safety cover. The INVR2U-HS shelf with two

INV2500-HS inverters in it is identical in appearance and dimensions to the

INV5000-HS, both front and back. Both units have a front retention panel over the INV2500-HS modules.

8.4

On the back panel to the left are the AC output screw terminals. At the center is a terminal strip with the Form C relay contacts N.O., C and N.C. for each side (A and B) of the inverter. To the right are the input bus bars with no. 1/4-

20 studs. At the lower far right is the no. 10-32 stud chassis ground connection.

9.0

ELECTRICAL SPECIFICATIONS

Specifications typical at 48V input, full load and 25°C unless otherwise noted. Asterisk (*) means specification is same as center column.

2 INV2500-HS

IN INVR2U-HS

INPUT

INV2500-HS INV5000-HS

Voltage Range ..................................................... * ................................ 42-56 VDC ................................ *

Input Current, Full Load, 48VDC .................. <60A DC .......................... <120ADC .......................... <120ADC

Input Current, No Load, 48VDC ..................... <1A DC ............................. <2ADC .............................. <2ADC

Input Protection .................................................... * ...................... 100A Circuit Breaker(s) ...................... *

EMI Filter, Conducted .......................................... * ..................... FCC2078 pt.15J Curve A .................... *

EN55022 Curve A

Voice Band Noise/ A-H Battery ................ <32dBrnC/240 .................. <32dBrnC/480 .................. <32dBrnC/480

6

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

INV2500-HS FRONT VIEW

3.32

(84.3)

ä

8.50

(216)

INV2500-HS BACK VIEW

ä

ä

HOT-SWAP

CONNECTOR

Figure 2. Front and Back of INV2500-HS Module

INVR2U-HS AND INV5000-HS FRONT VIEW

A SIDE B SIDE

ä

DC INPUT

BREAKER

AC OUTPUT

BREAKER

18.32

(465)

DC INPUT

BREAKER

INVR2U-HS AND INV5000-HS BACK VIEW

AC OUTPUT

BREAKER

ä

*

*NOTE: The INVR2U-HS shelf (115VAC) does not have this 230VAC line output

terminal (just above the ground terminal).

Figure 3. Front and Back of INV5000-HS System

7

3.46

(87.9)

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

INV2500-HS

2 INV2500-HS

IN INVR2U-HS INV5000-HS

OUTPUT

Voltage, Full Load .......................................... 115VAC ............................ 115VAC ............................ 230VAC

Voltage, No Load ........................................... 120VAC ............................ 120VAC ............................ 240VAC

Current, Max. ................................................ 22A RMS .......................... 44A RMS .......................... 22A RMS

Frequency, ± 0.1% ............................................... * ................................ 50 or 60Hz ................................ *

Total Harmonic Distortion .................................... * ..................................... <2% ..................................... *

Load Crest Factor ................................................ * ................................... 2.8 to 1 .................................. *

Output Protection ................................................. * ....................... 25A Circuit Breaker(s) ....................... *

Surge Capability .................................................. * ............................... Up to 300% ............................... *

Reactive Loads .................................................... * .................... +90° to - 90° Phase Angle ................... *

Efficiency ............................................................. * ..................................... 90% ..................................... *

SAFETY STANDARDS .........................

* ................... UL1950, CSA22.2 No.950, ................... *

EN60950

STATUS INDICATORS

Input OK ............................................................... * ................................ Green LED ............................... *

Sync OK ............................................................... * ................................ Green LED ............................... *

Output OK ............................................................ * ................................ Green LED ............................... *

Form C Relay Alarm Contacts ............................. * .......................... Inverter Fail Alarm .......................... *

ENVIRONMENTAL

Operating Temp. Range ...................................... * ............................... 0°C to 70°C ............................... *

Output Current Derating ...................................... * ...................... 2.5%/°C, 50°C to 70°C ...................... *

Storage Temp. Range ......................................... * ............................ -40°C to +85°C ............................ *

Humidity ............................................................... * ................. 0% to 95%, Non-Condensing ................. *

Cooling ................................................................ * .............................. Internal Fans .............................. *

PHYSICAL SPECIFICATIONS

Case Material ...................................................... * ................................ Aluminum ................................ *

Finish, Front Panel & Shelf .................................. * .......................... Powder Coat Gray .......................... *

Dimensions, Inches (mm)

INV2500-HS ............................... 3.32 H x 8.50 W x 12.00 D

(84.3 x 216 x 305)

INVR2U-HS Shelf ................................................................. 3.46 H x 18.32 W x 16.38 D

(87.9 x 465 x 416)

INV5000-HS ............................................................................................................. 3.46 H x 18.32 W x 16.38 D

.............................................................................. (87.9 x 465 x 416)

Rack Mounting Width ...................................... * ............................ 19 or 23 Inches ............................ *

10.0

MECHANICAL DIMENSIONS OF SHELVES

Figure 4 shows the mechanical dimensions for the INVR2U-HS and INV5000-HS shelves. The shelves are identical at 16.38 inches (416mm) deep; with the rear plastic cover they are 18.00 inches (457mm) deep.

8

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

17.38

(441)

3.46

(87.9)

ä 18.32

(465)

ä

Figure 4. Mechanical Dimensions of INV5000-HS or INVR2U-HS Shelf

9

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

11.0

SAFETY AND INDUSTRY STANDARDS

11.1

The INV2500-HS and INV5000-HS inverters meet the following safety certifications:

STANDARD

UL1950

CSA22.2 No.950

EN60950

AGENCY

UL

CUL

DEMKO

11.2

The INV2500-HS and INV5000-HS inverters are CE marked to indicate conformance to the European Union’s Low Voltage Directive.

11.3

Input conducted EMI meets FCC20780 part 15J Curve A and EN55022

Curve A.

11.4

Input voice band noise is less than 32dBrnC for a single INV2500-HS with a

240 ampere-hour battery or an INV5000-HS or two INV2500-HSs with a 480 ampere-hour battery.

12.0

OPERATING INFORMATION

12.1

Input Voltage. These telecom inverters operate off a nominal 48VDC input source which may be a battery or other DC source. The input voltage range is

42 to 56VDC. Input connections on the back of the INV5000-HS and

INVR2U-HS are to bus bars with no. 1/4-20 studs.

12.2

Output Voltage. The output voltage for an INV2500-HS is 115VAC at full load, 120VAC at no load; for an INV5000-HS it is 230VAC at full load,

240VAC at no load. See Figure 5(a). Frequency is 50 or 60Hz, ±0.1%. The output voltage has total harmonic distortion of less than 2.0%. The load current crest factor is 2.8 to 1, and surge capability is up to 300%. The output will drive reactive loads with up to ±90 o phase angle. The output connectors are screw terminals on the back of the INV5000-HS or INVR2U-HS.

12.3

Output Power. Maximum output power for an INV2500-HS is 115VAC at

22A RMS giving a maximum of 2530 volt-amperes. For an INV5000-HS it is

230VAC at 22A RMS, giving a maximum of 5060 volt-amperes. Exceeding these values may cause electronic shutdown of the output. Full output power is produced at up to 50 o C ambient temperature. Above this, output current must be derated at 2.5%/ o C. Maximum operating temperature is 70 o C, at which the output current must be derated by 50%.

10

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

12.4

Overload Characteristic. These inverters incorporate electronic shutdown circuitry; shutdown takes place during an overload, before the output circuit breaker trips. Figure 5 shows INV2500-HS output voltage and current waveforms for a full load step, sudden overload, and short circuit. Figure 6 shows shutdown time versus output current for both the INV2500-HS and INV5000-

HS. Below is a table that shows the same data in a different format:

Table 12-1.

Typical Load Current vs. Shutdown Time

PERCENT OF

RATED LOAD

114-173%

173-223%

223-318%

SHUTDOWN

TIME

10 sec.

1 sec.

0.25 sec.

As the table shows, the INV2500-HS and INV5000-HS are capable of handling large output surge currents, specifically more than three times rated output current for 1/4 second, more than twice rated output current for 1 second and more than 1.5 times rated output current for 10 seconds. If the surge exceeds approximately 318% of rated output current or exceeds the shutdown times shown in the table, the output will be shut down and must be reset by turning both input and output circuit breakers off. After this, the input breaker(s) should be turned back on (up position); after the Output OK

LED(s) come on the output breaker(s) should be turned back on (up position).

12.5

Grounding. It should be noted that in the standard INV2500-HS and

INV5000-HS models, both AC ground and AC neutral are connected to case/ shelf ground. For Option E versions, AC neutral is floating and must be externally connected to system ground. In both versions the DC input terminals are both floating.

12.6

Status Indicators. Three green LEDs indicate the operating status of each

INV2500-HS inverter module. They are (from top to bottom): Input OK, Sync

OK and Output OK.

12.7

Form C Relay Contacts. These contacts have normally open (N.O.) and normally closed (N.C.) positions for normal operation of each inverter. See

Figure 3 for connections. Note that there is a separate set of contacts for each half (A and B sides) of the inverter. If it is desired to monitor the inverter as a whole, the two sets of contacts may be connected as shown in Figure 7 to give an OR function for either set of contacts.

11

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

1

2

(a) Full Load Step. Vo (top) & Io (bot@20A/cm).

1

2

(b)Sudden Overload Applied. Vo (top) & Io (bot @ 50A/cm).

1

2

(c) Short Circuit Applied. Vo (top) & Io (bot @50A/cm).

Figure 5. INV2500-HS Inverter Output Waveforms

12

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

0

0

10

20

20

40

30

60

Output RMS Amperes

40

80

50

100

60

120

70

140

80

160

INV2500-HS or 230VAC INV5000-HS

2- INV2500-HS IN INVR2U-HS

Figure 6. INV2500-HS & INV5000-HS Overload Characteristic.

(a) Normally Open (b) Normally Closed

Figure 7. Connections for ORing Form C Relay Outputs

13

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

12.8

Sync Connections. There are +Sync and -Sync terminals on the terminal block. When two or more inverters are connected in parallel these Sync terminals must be connected together, observing the polarities.

12.9

Inverter Module Connections. If the INV2500-HS inverter module is operated or tested separately from the shelf, connections should be made to the

J1 connector with a mating connector and the pin connections given in Figure

8.

13.0

PARALLEL OPERATION

13.1

The INV2500-HS and INV5000-HS Series inverters are designed to operate in parallel for higher output current. For the INV2500-HS, the units are automatically connected in parallel in the INVR2U-HS shelf. The INV5000-HS

230VAC units have two INV2500-HS inverters connected in series in the shelf. Two or more INV5000-HS inverters may be connected in parallel for additional output power or for N+1 redundant operation. This is done by connecting all inputs in parallel and all outputs in parallel (line, neutral, line), although the DC inputs could come from two separate sources. In addition, the sync terminals must be connected together, +Sync to + Sync and -Sync to -Sync. The Sync terminals are used only for parallel connection of two or more inverters. Current sharing between paralleled inverters is ±10%.

13.2

Alternatively, separate sources may be used for the inputs to these inverters while the outputs are connected in parallel. In either case, output loads should have individual distribution circuit breakers. The following table shows output current and total volt-amperes for inverters connected in parallel. As mentioned earlier, INV5000 refers to either the 230VAC INV5000-HS or two

INV2500-HS inverters in an INVR2U-HS shelf producing 115VAC.

Table 13-1.

Output For Paralleled Inverters

NO.OF INV2500-HS

INVERTERS

1

2

3

4

KVA

RATING

2.5

5.0

7.5

10.0

OUTPUT

AMPS

22

44

66

88

NO.OF INV5000-HS

INVERTERS

1

2

3

4

KVA

RATING

5.0

10.0

15.0

20.0

115VAC

AMPS

44

88

132

176

230VAC

AMPS

22

44

66

88

13.3

Four INV2500-HS inverters in two INVR2U-HS shelves connected in parallel could be used to produce 10 kilovolt-amperes of 115VAC or could also be used as a 3+1 redundant inverter providing 7.5 kilovolt-amperes of 115VAC to a load.

14

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

J1

3 2 1

6 5 4

9 8 7

11 10

13 12

15 14

17 16

19 18

21 20

24 23 22

27 26 25

30 29 28

33 32 31

J1 Connector:

Positronics GFSH01M182

Mating Connector:

Positronics GFSH01F10

Contacts No. FC112N2 for

Pins 1, 3, 5, 7, 8, 25-28 and 30-33.

Conacts No. FC720N2 for

Pins 14-18.

PIN FUNCTION

J1 Connections

PIN FUNCTION PIN FUNCTION

1 AC Line

2 NC

3 AC Line

4 NC

5 AC Neutral

6 NC

7 AC Ground

8 AC Neutral

9 NC

10 NC

11 NC

NC = No Connection

12 NC

13 NC

14 +Sync

15 -Sync

16 Form C: NC

17 Form C: C

18 Form C: NO

19 NC

20 NC

21 NC

22 NC

23 NC

24 NC

25 +DC In

26 -DC In

27 -DC In

28 +DC In

29 NC

30 -DC In

31 +DC In

32 +DC In

33 -DC In

NOTE: Standard modules have AC Neutral internally connected to AC

Ground. Option E versions have floating AC Neutral.

Figure 8. Inverter Module Pin Connections

15

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

13.4

Figure 9 shows four INV2500-HS inverter modules in two INVR2U-HS shelves connected in parallel to give 10KVA of AC output at 115VAC. The AC output is distributed by a DPAC1UT AC Distribution Panel made by

UNIPOWER Telecom. Note that only 115VAC inverters can be used with the

DPAC1UT distribution panel and not the 230VAC INV5000-HS. 230VAC

INV5000-HSs require breakers on both line sides, and this is not available with the DPAC1UT. Note also that only the “T” (Terminal Strip) Option of the

DPAC1U can be used with these inverters and that, as shown in Figure 9, the A side AC input terminals must be strapped in parallel, i.e., A1G to A2G,

A1N to A2N and A1L to A2L; in the same way, the B side AC input terminals must also be strapped in parallel.

14.0

INSTALLATION AND TESTING

14.1

The inverter or inverters should be initially tested in their shelves. For 23-inch rack mounting use panel extenders.

14.2

Put all input and output circuit breakers in the off (down) position. See Figure

3. Remove the rear plastic safety cover.

14.3

Connect the input battery to the -48VDC and 48VDC Return input bus bars by means of the 1/4-20 studs. Connect the input ground (10-32 stud) to the system ground. Make sure the correct polarity is used and make sure the connections are clean and firm. Reversed input polarity could cause damage to the inverter.

14.4

Connect the AC output cable to the proper output screw terminals. See

Figure 10 for the correct connection for 115 or 230VAC output versions.

Connect a load of approximately 10 amperes across the output of the inverter.

WARNING: When using “floating neutral” (Option E) in the INV2500-HS module or INV5000-HS system, the AC neutral output terminal “N” is floating with respect to chassis ground. A neutral-to-ground connection must be re-established external to the inverter and be in compliance with the requirements of the end-use application.

14.5

To power up the inverter, turn the A side (left) DC input circuit breaker on by moving the toggle to the up position. The A side fans and input OK and Sync

OK LEDs should come on followed by the Output OK LED approximately four seconds later. After the Output OK LED is on, turn on the A side AC output breaker by placing the toggle in the up position. Next, turn the B side (right)

DC input breaker on. The B side fans and Input OK and Sync OK LEDs should come on followed by the Output OK LED approximately four seconds

16

AC OUTPUTS

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

Figure 9. Two 115VAC INVR2U-HSs in Parallel Using AC Distribution Panel

INVR2U-HS INV5000-HS

Figure 10. Output Connections for Inverters

17

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL later. After the Output OK LED is on, turn on the B side AC output breaker.

Check the AC voltage across the load with a digital AC voltmeter. The voltage should be between 115 and 120VAC or between 230 and 240VAC, depending on the model.

14.6

Check the Form C Relay contacts with an ohmmeter. See Figure 3. Measure the resistance between the N.O. contacts and C contacts. They should indicate an open. Measure the resistance between the N.C. contacts and the

C contacts. They should indicate a short.

14.7

Turn off the AC output circuit breakers first, followed by the DC input breakers, by placing the toggles in the down position. Test each inverter in the manner described above.

15.0

INVERTER APPLICATION

15.1

In the actual application of the inverter, follow the procedure in sections 14.2

through 14.6, except the inverter should be connected to its actual load. The loads connected to the output of the inverter should always have their own individual circuit breakers. Make connections to the Form C relay contacts as required. Then re-install the rear plastic safety cover.

15.2

For two or more inverters in parallel, make the input and output connections to the inverters as described in Section 13.0. See Figure 9. Put all output distribution circuit breakers in the off position. Connect the sync terminals together observing proper polarity.

15.3

Take one of the inverter modules and turn the DC input circuit breaker on; then after the Output OK LED has come on, turn the AC output circuit breaker on. This sequence must be performed for the inverter A side and then the B side. Repeat this for each paralleled inverter in turn until all inverters are on. Make sure that the three green LEDs are on for each inverter.

15.4

With all inverters on, turn on each AC output distribution circuit breaker. The inverters will automatically share output currents to an accuracy of ± 10%.

18

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

16.0

REPLACING AN INVERTER MODULE

16.1

The following instructions are for replacing an INV2500-HS inverter module in an INVR2U-HS shelf.

16.2

The inverter module may be field replaced only in an INVR2U-HS shelf, i.e., when it is parallel connected for 115VAC output. For the INV5000-HS inverters, the replacement must be done at the factory due to the complexity of the series connection of the inverter modules.

16.3

When the INV2500-HS inverters are operated in N+1 redundant mode, only the inverter module being replaced needs to be turned off as described in the following paragraphs. In this case it is true hot-swap replacement. If the

115VAC INVR2U-HS is operated with two modules at its full 5,000 voltampere load, then both modules should be shut down in the manner described in paragraph 16.4. When starting up after replacement, both inverter modules must be turned on as described in paragraph 16.5.

16.4

Perform the following steps on the inverter module to be removed:

16.4.1

Turn off the AC output breaker (down position).

16.4.2

Turn off the DC input breaker (down position).

16.4.3

Remove the front retention panel by removing the four Phillips screws.

16.4.4

Remove the inverter module from its shelf.

16.5

To put a new inverter module in place, perform the following steps:

16.5.1

Make sure the input and output breakers of the new inverter module are in the off (down) position.

16.5.2

Install the replacement inverter module in the shelf.

16.5.3

Replace the front rention panel by replacing the four Phillips screws.

16.5.4

Turn on the DC input breaker (up position).

16.5.5

After the Output OK LED comes on, turn on the AC output breaker (up position).

16.5.6

All green LEDs on the inverter modules should now be on, indicating normal operation.

19

INV2500-HS & INV5000-HS SERIES

OPERATING MANUAL

17.0

MAINTENANCE

No routine maintenance is required on the INV2500-HS or INV5000-HS Series inverters except for a periodic cleaning of dust and dirt around the front fans and rear ventilation holes. A small vacuum nozzle should be used for this.

18.0

TROUBLESHOOTING GUIDE

18.1

If you encounter difficulty in getting the inverter(s) to operate, go through the following troubleshooting guide.

18.2

Table 18-1. Inverter Troubleshooting Guide

SYMPTOM POSSIBLE CAUSES

Input OK LED does not come on.

Sync OK LED does not come on for

Bad connection to input battery; input breaker not on.

Bad connection to sync terminals.

ACTION TO TAKE

Check the connection to battery; check battery voltage; check that input breaker is on.

Check that sync connection has been made to all paralleled inverters with proper polarity.

No AC output;

Output OK LED does not come on.

No AC output.

Output OK LED is off.

Bad output connection; output breaker not on.

Short circuit or overload on output.

Check output connection to load; check that output breaker is on; check that AC distribution breakers are on.

Remove short circuit or overload. Turn off input and output circuit breakers. Turn input circuit breaker back on, wait for the

Output OK LED to come on, then turn the output circuit breaker on.

Check battery voltage. Recharge battery or install new battery. Turn the inverter back on.

No output. Both circuit breakers on.

Input and Output OK

LEDs off.

Input battery voltage is below range.

18.3

If none of the above actions solves the problem, call UNIPOWER Telecom at

954-346-2442 Ext. 400 for help.

20

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