UNINTERRUPTIBLE POWER SUPPLY
MODEL
9800AE
SINGLE MODULE SYSTEM
SPECIFICATIONS
TABLE OF CONTENTS
PART 1
GENERAL .........................................................................................................................2
1.1 SUMMARY ............................................................................................................................2
1.2 STANDARD ...........................................................................................................................2
1.3 SYSTEM DESCRIPTION ......................................................................................................2
1.3.1 Components ......................................................................................................................2
1.3.2 Mode of Operation.............................................................................................................2
1.4 SUBMITTALS ........................................................................................................................3
1.4.1 Proposal Submittals ..........................................................................................................3
1.4.2 Delivery Submittals............................................................................................................3
1.5 ENVIRONMENTAL CONDITIONS ........................................................................................4
1.6 WARRANTY ..........................................................................................................................4
1.7 QUALITY ASSURANCE ........................................................................................................4
1.7.1 Reliability ...........................................................................................................................4
1.7.2 Maintainability....................................................................................................................5
1.7.3 Factory Test .......................................................................................................................5
PART 2
PRODUCT.........................................................................................................................5
2.1 ELECTRIC CHARACTERISTICS..........................................................................................5
2.1.1 UPS Output Capacity ........................................................................................................5
2.1.2 Battery Capacity ................................................................................................................5
2.1.3 AC Input.............................................................................................................................6
2.1.4 Bypass Input......................................................................................................................6
2.1.5 AC output...........................................................................................................................6
2.1.6 DC input and Battery .........................................................................................................7
2.1.7 Efficiency ...........................................................................................................................7
2.2 COMPONENTS .....................................................................................................................7
2.2.1 Hybrid Converter Section: .................................................................................................7
2.2.2 Inverter ..............................................................................................................................10
2.2.3 UPS Module Control and Monitoring ................................................................................12
2.2.4 Bypass and Static Switch ..................................................................................................13
2.2.5 Operation/Display Panel ...................................................................................................14
2.2.6 Microprocessor Interface/Diagnostics...............................................................................16
2.2.7 UPS Status and Function Interfacing ................................................................................17
2.2.8 (Option) Remote Status Alarm Panel ................................................................................18
2.2.9 (Option) DiamondSync ......................................................................................................18
2.2.10 (Option) Common Battery .................................................................................................18
2.3 MECHANICAL DESIGN ........................................................................................................18
2.3.1 Cabinet Structure (Enclosure) ...........................................................................................18
2.3.2 Serviceability .....................................................................................................................19
2.3.3 Ventilation ..........................................................................................................................19
2.3.4 Busbar ...............................................................................................................................19
2.3.5 (Option) Eyebolts...............................................................................................................19
PART 3
3.1
3.2
3.3
EXECUTION` ....................................................................................................................19
SITE PREPARATION ............................................................................................................19
INSTALLATION .....................................................................................................................19
FIELD QUALITY CONTROL..................................................................................................19
98AEtypSMSspec_RevC.doc
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Copyright © 2007, Mitsubishi Electric Power Products, Inc.
SP-0012 Rev. C 09/05/09
SECTION 16610
STATIC UNINTERRUPTIBLE POWER SUPPLY SYSTEM
PART 1 GENERAL
1.1 SUMMARY
This specification describes a three phase continuous duty, an on-line, solid-state, uninterruptible
power system, hereinafter referred to as the UPS. The UPS shall operate utilizing the existing
power distribution system to provide a high quality, reserve source of power to electronic
equipment loads. The system shall consist of a rectifier, system battery, solid-state inverter,
automatic static bypass transfer circuit and integral maintenance bypass circuit.
1.2 STANDARD
The UPS has been designed in accordance with and complies with the following standards;
1.
2.
3.
4.
5.
UL 1778 (Underwriter Laboratories) Standard for UPS Equipment.
CSA 22.2 (Canadian Standards Association – cUL Equipment).
IEC (International Electro-technical Commission) Semiconductor Converter Standards.
IEEE 587, ANSI C62.41 1980 Standard for Surge Withstand Ability.
ISO 9001 Quality Assurance program.
1.3 SYSTEM DESCRIPTION
1.3.1
Components
The UPS system shall consist of the following major equipment;
A. UPS module.
1. Insulated Gate Bipolar Transistor (IGBT) Inverter.
2. Diode Bridge + IGBT DC/DC Rectifier.
3. Digital Signal Processor (DSP) using Pulse Width Modulation (PWM) for Direct
Digital Control (DDC) of all UPS control and monitoring functions.
4. Static bypass switch sized to provide fault clearing.
5. 65KA withstand rating (option)
B. Battery system.
C. Battery protective and disconnect device.
D. Maintenance bypass switch (option).
E. Remote status alarm panel (option).
1.3.2
Mode of Operation
The UPS shall be designed to operate continuously at rated capacity as an on-line,
automatic reverse transfer system in the following modes;
A. Normal - The inverter continuously supplies AC power to the critical load. The rectifier
converts a utility AC power source to regulated DC power which then serves as the
inverter input and, simultaneously, as a float charge input to the storage battery.
B. Emergency - In the event of a utility AC power failure, the inverter shall derive its input
from the system battery, therefore providing uninterrupted power to the critical load.
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This transition shall be accomplished without any switching or coupling, and with no
interruption of power to the critical load from either a failure or restoration of the utility
AC power.
C. Recharge - Subsequent to restoration of utility AC power, the rectifier shall automatically
reactivate and provide DC power to the inverter, simultaneously recharging the system
battery. This occurs automatically and without interruption to the critical load.
D. Bypass - In the event that the UPS must be taken off line due to an overload condition or
UPS failure, the critical load shall be transferred to the bypass source via the static
switch without interruption of AC power to the critical load. A paralleling, wrap-around
contactor shall be used to maintain the bypass source. The static switch shall only be
utilized for automatic emergency transfers. A re-transfer from bypass to inverter shall
be performed automatically in overload conditions. A re-transfer shall be inhibited if
satisfactory synchronization of the inverter and bypass is not accomplished. The use
of the static switch shall not be required during the manual or automatic re-transfer
process, therefore increasing reliability.
E. Maintenance Bypass – The UPS system shall be equipped with an external MBS to
allow safe and reliable maintenance of the UPS. The MBS shall be of the
Make-Before-Break, “Zero Energy” type to ensure maximum load reliability and
personnel safety.
1.4 SUBMITTALS
1.4.1
Proposal Submittals
Submittals with the proposal shall include;
A. System configuration with single-line drawings.
B. Functional relationship of equipment including weights, dimensions, and heat
dissipation.
C. Descriptions of equipment to be furnished, including deviations from these
specifications.
D. Size and weight of shipping units to be handled by installing contractors.
E. Detailed layout of customer power and control connections.
F. Detailed installation drawings including all terminal locations
1.4.2
Delivery Submittals
Submittals upon UPS delivery shall include;
A. Shop Drawings.
Submit system configurations with single line diagrams, detailed layout of power and
control connections, dimensional data and detailed installation drawings including all
terminal locations.
B. Product Data.
Provide product data for UPS and battery including catalog sheets and technical data
sheets to indicate electrical performance, UPS type, battery type, detailed equipment
outlines, weight, dimensions, control and external wiring requirements, heat rejection
and air flow requirements.
C. Owners and technical manual (1).
D. Test Report
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Copyright © 2007, Mitsubishi Electric Power Products, Inc.
SP-0012 Rev. C 09/05/09
Submit a copy of factory and field test reports.
1.5 ENVIRONMENTAL CONDITIONS
A. The UPS shall be capable of withstanding any combination of the following external
environment conditions without mechanical damage, electrical failure or degradation of
operating characteristics.
1. Operating ambient temperature: 0 degrees C to +40 degrees C (32 degrees F to 104
degrees F) no derating required.
2. Recommended operating temperature range: +20 degrees C to +30 degrees C (68
degrees F to 86 degrees F).
3. Non-operating and storage ambient temperature: -20 degrees C to +70 degrees C (-4
degrees. F to 158 degrees F).
4. Operating relative humidity: 5% to 95%, non-condensing.
5. Recommended operating relative humidity: 30% to 90%.
6. Operating altitude: Sea level to 2700 meter (9000ft).
7. There should be no inflammable / explosive gas.
8. Dust in the room where the UPS is installed must not exceed normal atmospheric dust
levels. In particular, that dust should not include iron particles, oils or fats, or organic
materials such as silicone.
B. Audible acoustical noise: Noise generated by the UPS, when operating under full rated load,
at a distance of one meter from any UPS operator surface, shall not exceed ___ dB as
measured on the A scale of a standard sound level meter at slow response.
C. Input surge withstand capability: The UPS shall be in compliance with IEEE C62.41,
Category B.
1.6 WARRANTY
The UPS manufacture shall warrant to the original end user that the Uninterruptible Power
Supply System sold by Mitsubishi Electric Power Products, Inc. (the “Product”) shall be free from
defects in material and workmanship under normal use and service for a period of twenty four
(24) months from the date of installation or thirty months (30) months from the date of shipment
of the Product, whichever comes first, at the premises of the original end user.
1.7 QUALITY ASSURANCE
1.7.1
Reliability
The UPS equipment reliability shall be represented in terms of theoretical
Mean-Time-Between-Failures (MTBF). The UPS manufacturer shall, as a minimum,
provide the following capability:
A. Total single module UPS system output (includes reliability of bypass circuit):
1,000,000 MTBF hours.
B. Single module UPS operation (represents UPS module operation only):
120,000 MTBF hours.
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Copyright © 2007, Mitsubishi Electric Power Products, Inc.
SP-0012 Rev. C 09/05/09
1.7.2
Maintainability
MTTR of the UPS shall not exceed 1 hour including time to replace components.
1.7.3
Factory Test
A. The manufacturer shall fully and completely test the system to assure compliance with
the specifications, before shipment.
B. All UPS units shall come equipped with one (1) factory test report included in the UPS
enclosure. The factory test report shall include the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Series / kVA
Serial Number
Date of test
Approved by / Inspected by / Tested by
Inspection of construction
Checking of wiring (Black/Red marking on each connection point)
Grounding Continuity
Insulation strength test
Control Circuit Operation
Measurement of steady state characteristics (Voltage/ current/ efficiencies)
Transient characteristics (0-100% step load, without batteries/ voltage fluctuation)
Overload Testing
Transfer switch operation
PART 2 PRODUCT
2.1 ELECTRIC CHARACTERISTICS
The UPS shall have the following electrical characteristics;
2.1.1
UPS Output Capacity
The 9800A Series UPS Module is available in the following sizes:
kVA
100
150
225
300
375
500
750
kW
80
120
180
270
337.5
450
675
UPS Module output capacities are in accordance with the following power factors:
A. 100 kVA ~ 225 kVA
B. 300 kVA ~ 750 kVA
2.1.2
0.8 pf lagging
0.9 pf lagging
Battery Capacity
A. Discharge time to end voltage:
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___ minutes at full load, 25 degrees C (77 degrees F).
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SP-0012 Rev. C 09/05/09
2.1.3
AC Input
A.
B.
C.
D.
E.
F.
Nominal input voltage: 480V.
Number of phase: 3 phase, 3 wire, plus ground.
Voltage range: +15%, -15%.
Frequency and range: 60Hz +/-5%.
Power walk-in time: 10 seconds (0% to 100% load).
Power factor:
1. 0.98 leading typical at 100% load.
2. 0.90 leading typical at 50% load.
G. Reflected input current total harmonic distortion (THD):
1. 6% typical at 100% load.
2. 9% typical at 50% load.
2.1.4
Bypass Input
A.
B.
C.
D.
2.1.5
Nominal input voltage: 480V, 600V.
Number of phase: 3 phase, 4 wire.
Synchronization voltage range: +/-10% of nominal.
Frequency tracking range: 60Hz +/-5% Maximum.
(Bypass synchronous range shall be selectable from 1% to 5% in 1% increment)
AC output
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
Nominal output voltage: 480V/277V, 600V/346V.
Number of phase: 3 phase, 4 wire, plus ground.
Nominal dynamic Voltage regulation: +/-1% for unbalanced load.
Manually adjustable output voltage: +/-5% range.
Voltage transient response:
1. 100% step load: +/-2%.
2. Loss or return of AC input: +/-1%.
3. Retransfer from bypass to inverter: +/-5%
(Voltage transient response shall not exceed the above and shall recover to within
nominal voltage regulation tolerance within 16.7 msec.)
Frequency (inverter synchronous): 60 Hz (tracks frequency of static bypass source).
Free running output frequency (on battery or asynchronous): 60 Hz +/- 0.05%.
Frequency slew rate (inverter synchronized to static bypass): 1Hz to 10Hz/second
(selectable).
Output voltage harmonic distortion:
1. 2% maximum at 100% linear load.
2. 5 % maximum at 100% non-linear load.
(Load power factor range of 0.7 lagging to 1.0 within kW rating of UPS.)
Voltage phase angle displacement:
1. +/-1 degree for 100% balanced load.
2. +/-3 degree for 100% unbalanced load.
Overload capability:
1. 105% to 125% for 10 minutes (Voltage regulation maintained).
2. 125% to 150% for 1 minute (Voltage regulation maintained).
Fault clearing: Typically 500% for 1 cycle (utilizing bypass source).
1. Typically 1000% for 1 cycle (utilizing bypass source) (100kVA to 225kVA)
2. Typically 500% for 1 cycle (utilizing bypass source) (300kVA to 750kVA)
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SP-0012 Rev. C 09/05/09
2.1.6
DC input and Battery
1.
2.
Voltage: 480V DC nominal, 400V DC minimum.
Voltage ripple (normal operation): less than 2% of DC voltage.
A. The Battery System shall be sized to provide the specified back-up time to the
inverter when the UPS is supplying 100% rated load.
B. Each Battery System shall include a disconnect 600V DC circuit breaker to
facilitate isolation of UPS Module DC Input and the Battery System. The DC
Circuit breaker shall incorporate an UVT relay and auxiliary contact
connections to the UPS Module control for prevention of incorrect start up and
shutdown sequencing.
C. The battery system shall be capable of operating in an average ambient
temperature of 25°C, with excursions of 16°C to 32°C and shall be sized as
follows:
 Float Voltage:
545V DC (2.25 to 2.27 V/cell)
 Final Voltage:
400V DC (1.67 V/cell)
2.1.7
Efficiency
UPS Module
Capacity (kVA)
100
150
225
300
375
500
750
Battery to AC
(100% Load)
0.935
0.935
0.930
0.935
0.935
0.940
0.940
AC to AC
(100% Load)
0.935
0.935
0.930
0.935
0.935
0.940
0.940
2.2 COMPONENTS
UPS module shall be comprised of the following;
2.2.1
Hybrid Converter Section:
AC input, converter input contactor, converter input fuse, input harmonic filter, and hybrid
converter utilizing;
2.2.1.1 High Power Diode Bridge Rectifier
A. General
A high power diode bridge rectifier converts the utility AC input power into regulated DC
power that serves as the inverter input and also as dc charge power to the system
battery through the chopper/booster. An AC reactor and capacitor shall filter the
harmonic content of rectifier input.
B. Reflected Harmonic Content
The high power diode bridge rectifier shall typically not introduce more than 6% reflected
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SP-0012 Rev. C 09/05/09
input current total harmonic distortion (THD) into the utility AC input source at nominal
voltage and rated load. The reflected input current shall typically not exceed 9% THD at
50 % load.
C. Automatic Input Power Walk-in
The rectifier logic and control circuit power walk in function enables delayed and timed
ramping of input current. Subsequent to energizing the rectifier input, initiation of the
power walk in function and current ramping shall be delayed by a maximum of 3600
seconds (every 1 second adjustable – default at 10 second). Upon initiation of the power
walk-in function, the ramping of current shall be timed to gradually increase the load
within 10 seconds. This function is included as standard in the rectifier control circuitry.
D. Input Overcurrent Protection
Converter input contactor, input fuses, and the input current limit control shall provide
rectifier protection against excessive input overload conditions.
E. Step Load Change Operation (0-100%)
In the occurrence of a 100% step load change, the UPS Module inverter shall draw
power only from the rectifier to provide the required load demand. The charger/booster
shall not be utilized and the system batteries will not be cycled at any time during a step
load change.
2.2.1.2 Charger/Booster
A. General
The charger/booster utilizes solid state Pulse Width Modulation (PWM) controlled
Insulated Gate Bipolar Transistors (IGBT). The charger switching frequency is 10kHz,
and the booster switching frequency 2kHz.
B. Battery Charge Current Limit
The charger logic and control circuit DC battery current limiting function enables
controlled battery charging. The battery charge current limit will control the recharge
current by reducing the rectifier/charger output when the set limit is reached. The
following battery current limit shall be provided as a minimum:
1.
2.
Battery charge current limit: 10% of battery Ah rate.
Maximum charge current: 13% ampere of UPS rated kVA.
(e.g. 13ADC maximum of 100kVA UPS)
C. Equalize Charge Timer
UPS Module logic and control shall provide an electronic equalize charge timer function
(0 to 50 hour selectable - default twenty-four (24) hour). Once activated the timer circuit
shall provide a high rate equalizing charge voltage to the system battery for the selected
time. The function can be manually activated and de-activated via the UPS Module LCD.
The level of equalizing voltage shall be equal to that stated by the battery manufacturer
(typically .04 to .08 VDC/cell higher than the specified float level). Upon completion of
the timer count, the converter output voltage shall return to the specified float voltage
(typically 2.25 to 2.27 VDC/cell). An Auto Equalize charge operation is also provided
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following AC input restoration and subsequent to the power walk in function. This
equalizing charge will occur until the battery target voltage is reached (condition is met
to end equalizing charge), in which float voltage will be applied.
D. Battery Temperature Compensation
The UPS shall have as standard a battery temperature compensation function allowing
the rectifier voltage to fold-back to a safe value in the event the battery system
temperature reaches a pre determined (dangerous) level. Initiation will be by dry contact
input from thermocouple sensor (User supplied)
E. DC Input protection
The DC input circuit shall be protected by a DC circuit breaker. The DC circuit breaker
allows complete interruption of DC current and isolation of the UPS Module DC input
and the battery system.
The DC Circuit breaker shall incorporate an UVT relay and auxiliary contact connections
to the UPS Module control for prevention of incorrect start up and shutdown sequencing.
The DC Circuit Breaker shall be provided as standard equipment.
F. Charger/Booster protection
The DC input to the Charger/Booster shall utilize fuses for overload protection. The
fuses shall be fast acting semiconductor type to clear faults on the DC link.
G. Ripple voltage
The DC (battery) bus RMS ripple voltage shall be less than 2% of the UPS nominal DC
voltage level at 100% load. This shall provide for maximum battery life.
H. Battery Self Test (Diamond-Sense)
For a short duration, a small power discharge from the battery is automatically
performed. The UPS module, from this small power discharge, evaluates the
degradation of the system battery. The following advantages are achieved:
1.
2.
3.
The Diamond-Sense Battery Self-Test function can be performed even when load
is on inverter.
Due to the short duration small power discharge, there is no effect to battery life
expectancy.
The small power discharge has negligible effect on the overall battery back up time.
The small power that is discharged by the battery will quickly be replenished.
The Battery Self Test will automatically occur every 720 hour interval. An event alarm will
occur and be displayed if battery abnormalities are detected.
2.2.1.3 Input Current Limit
The rectifier and booster logic and control shall provide an input current limiting function
that limits AC input current. Two current transformers in separate locations on the output
(and operating separately offering redundancy) shall be employed as means of current
sensing.
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SP-0012 Rev. C 09/05/09
Input current limit setting:
110% of nominal rated current.
The AC input current limit shall be set up so that the rectifier/charger can provide
sufficient capacity to the inverter at rated load and have the capability to recharge a
discharged battery.
The input current limit protects hybrid converter components from damage due to
excessive input current.
2.2.1.4 Input Power Demand
The rectifier and booster logic and control shall also be capable of providing auxiliary
current limiting when initiated by an external dry contact closure (e.g. in the event power
demand is required when the UPS is fed from a motor generator).
Power Demand:
2.2.2
Adjustable, maximum 103% of nominal rated current.
Inverter
A. General
The inverter shall generate AC power derived from DC power supplied from the rectifier
or system battery. The inverter shall be capable of providing rated output as specified
while operating from any DC voltage within the battery operating range. The inverter
shall utilize the following technology:
1. Solid state PWM controlled IGBT power transistors switching at 2 kHz (average
switching frequency). Utilizing the adoption of a unique Mitsubishi Electric
Modulation method, enabling improved switching frequency (for efficiency
improvement) and high-speed response. Switching shall be defined as IGBT turn
on and turn off rate. (Apparent doubling of frequency at inverter output due to
simultaneous IGBT device activation shall not be considered as the true switching
frequency.)
2. UPS Module Full Direct Digital Control (DDC) Adoption:
a. Field Programmable Gate Array (FPGA) Control
b. DSP based Control
c. DSP Sampling Frequency is 30 kHz, therefore the control samples 500 times
in 1 cycle of output voltage. Output voltage is controlled with high precision.
B. Voltage Regulation
The inverter output voltage shall not deviate by more than +/- 1% RMS with the following
steady state conditions:
1. 0 to 100% loading.
2. Inverter DC input varies from maximum to minimum.
3. Environmental condition variations within the specifications defined herein.
C. Voltage Adjustments
The inverter shall have the ability to manually control and adjust the output voltage to
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SP-0012 Rev. C 09/05/09
within +/-5% of the nominal value.
D. Voltage Transient Response
The dynamic regulation and transient response shall not exceed +/-2% for 100% step
load (applied or removed), +/-1% for loss or return of AC input and +/-5% for inverter to
bypass and vice versa transfer.
E. Transient Recovery
Voltage transient response shall not exceed the above specification and shall recover to
within nominal voltage regulation tolerance within 16.7 ms
F. Frequency Control
The Inverter output frequency shall be controlled by an oscillator internal to the UPS
module logic. It shall be capable of synchronizing to an external reference (e.g.; the
bypass source) or operating asynchronously. A message located on the touch screen
shall identify the loss of synchronization. Synchronization shall be maintained at 60 Hz
+/- 0.05% continuously. The Inverter output frequency shall not vary during steady
state or transient operation due to the following conditions:
1. 0 to 100% loading.
2. Inverter DC input varies from maximum to minimum.
3. Environmental condition variations within the specifications defined herein.
G. Output Harmonic Distortion
The inverter output shall limit the amount of harmonic content to 2% maximum at 100%
linear load, and 5% maximum at 100% non-linear load. The need for additional filtering
to limit the harmonic content shall not be required. Therefore high efficiency, reliability
and original equipment footprint are maintained.
H. Output Overload Capability
The inverter output shall be capable of providing an overload current while maintaining
rated output voltage (and voltage regulation) to:
105% to 125% for 10 minute duration.
125% to 150% for 1 minute duration.
The UPS Module Operation/Display panel LED indication will illuminate to identify an
overload condition. If the time limit associated with the overload condition expires or the
overload is in excess of the set current, the load power shall be transferred to the bypass
source without interruption.
I.
Inverter Current Limit
The inverter output current shall be limited to 212% of rated load current. Two current
transformers in separate locations on the output (and operating separately offering
redundancy) shall be employed as means of current sensing.
The inverter current limit protects inverter components from damage due to excessive
over-current (Excessive load, faults and reverse current)
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SP-0012 Rev. C 09/05/09
J. Inverter Overload Protection
The inverter output shall utilize the electronic inverter current limiting for protection
against overload conditions (excessive overload, faults). The inverter shall utilize a
contactor to isolate its output from the critical bus and the load transferred to the bypass
source. The bypass static switch circuit shall be sized to provide fault clearing. The
inverter output isolation contactor shall be located internal to the UPS module and shall
be controlled by the internal UPS Module control.
The DC input to the Inverter shall utilize fuses for overload protection. Inverter fuses
shall be fast acting semiconductor type to clear faults on the DC link.
K. Inverter Output Isolate
The inverter output contactor isolates the inverter from the load and bypass source.
L. Line Drop Compensation
The inverter shall be provided with circuitry such that its output voltage rises linearly with
output current. The rise shall be required to achieve this function, and it shall not
interfere with other requirements of this specification. The purpose of this feature is to
compensate for varying line drop voltage between the inverter and the critical load
M. Inverter Operation Inhibit
The external dry contact can inhibit the inverter operation. When UPS condition is load
on inverter, load is transferred to bypass.
2.2.3
UPS Module Control and Monitoring
A. UPS Module Control and Monitoring operates and controls the hybrid converter, inverter
and independent automatic bypass static switch circuit
B. The UPS Module control circuitry utilizes Digital Signal Processor (DSP) and Application
Specified IC (ASIC) which create advanced controllability and simplify the control circuit.
Direct Digital Control (DDC) utilizing DSP and ASIC ensures high reliability, as well as
superior functionality and performance.
C. The UPS Module utilizes unique Major and Minor Feed Forward Current Loop Control,
enabling instantaneous control of UPS Module output. The digitalized UPS Module
incorporates Field Programmable Gate Array (FPGA) for Current Minor Loop Control,
and DSP based control for Feed Forward Control and Voltage Major Loop Control. DSP
Sampling Frequency is 30kHz, therefore the control samples 500 times in 1 cycle of
output voltage. Output voltage can therefore be controlled with high precision.
D. The UPS Module inverter utilizes solid state PWM controlled IGBT power transistors,
with the adoption of a unique Mitsubishi Electric Modulation method, enabling improved
switching frequency (for efficiency improvement) and high-speed response.
E. All UPS Module Control and Monitoring printed circuit boards shall be hermetically
sealed to protect against corrosive vapors.
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F. The UPS Module Control power supply employs a redundant design configuration,
utilizing the UPS AC input (utility) and the UPS Module inverter output therefore
enhancing reliability.
2.2.4
Bypass and Static Switch
UPS module contains an automatic bypass static switch circuit and associated bypass
static switch transfer control circuitry.
A. General
A bypass circuit shall be provided as an alternate source of power other than the inverter.
A high speed SCR switch and wrap-around contactor shall be used to assume the
critical load during automatic transfers to the bypass circuit. The static switch and
wrap-around contactor shall derive power from an upstream bypass feed contactor
internal to the UPS module. The wrap-around contactor shall be electrically connected in
parallel to the static switch and shall, at the same time as the static switch, be energized
and upon closure maintain the critical load feed from the bypass source. The static
switch shall only be utilized for the time needed to energize the wrap-around contactor
therefore increasing reliability. The bypass circuit shall be capable of supplying the
UPS rated load current and also provide fault clearing current capabilities. The UPS
system logic shall employ sensing which shall cause the static switch to energize within
150 microseconds therefore providing an uninterrupted transfer to the bypass source
when any of the following limitations are exceeded:
1.
2.
3.
4.
5.
Inverter output undervoltage or overvoltage.
Overloads beyond the capability of the inverter.
DC circuit undervoltage or overvoltage.
Final voltage of system battery is reached (bypass source present and available).
System failure (e.g.: logic fail, fuse blown, etc.).
B. Automatic Re-transfers
In the event that the critical load must be transferred to the bypass source due to an
overload, the UPS system logic shall monitor the overload condition and, upon the
overload being cleared, perform an automatic re-transfer back to the inverter output.
The UPS system logic shall only allow a re-transfer to occur three times within a one
minute period. Re-transfers shall be inhibited on the fourth transfer due to the likelihood
of a recurring problem at the UPS load distribution. All retransfers will be inhibited if the
inverter and static bypass line are not synchronized.
C. Manual Transfers
The UPS shall be capable of transferring the critical load to/from the bypass source via
the front control panel. If performing manual transfers to inverter or automatic
retransfers, the UPS system logic shall force the inverter output voltage to match the
bypass input voltage and then parallel the inverter and bypass sources providing a
make-before-break transition allowing a controlled walk-in of load current to the inverter.
Manual transfers will be inhibited if the inverter and static bypass line are not
synchronized.
D. Static Switch
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The static switch shall be a high speed transfer device comprised of naturally
commutated SCR's. During manual transfers the static switch is not required. The
static switch shall not use fuses for protection.
2.2.5
Operation/Display Panel
The control panel shall employ the use of a touch screen interface which allows lock-out of
all UPS control function for security (The Emergency Power Off function shall not be
lock-out). The operator interface shall provide the following:
1.
2.
3.
4.
5.
UPS start-up procedure
UPS shutdown procedure
Emergency Power Off (EPO)
Audible alarm silence
System status levels
The UPS module shall provided with a control/indicator panel. The panel shall be on the
front of the UPS module. Controls, meters, alarms and indicators for operation of the UPS
module shall be on this panel.
2.2.5.1 Graphic Operator Terminal Liquid Crystal Display (LCD):


5.7 inch Monochrome touch screen
High communication capability
- Ethernet (10Base-T) (utilized for Monitoring System interface).
- Optional Expansion Bus Interface for field network connectivity available
(Profibus, DeviceNet etc.)
A. The LCD touch screen interfaces with the UPS Module Control and main processor
board to provide menu-driven operator instructions and UPS Module operation
details. The LCD indicates system operation, operational guidance, measurement
data, set up data and alarm messages and logs. All metering shall be digitally
displayed on the LCD having an accuracy of 1% or better.
B. The touch screen area is composed of four MENU sheets: MAIN, MEASUREMENT,
SET-UP and LOG. Each MENU sheet has a name tab at the top and the four name
tabs form an overlap index at the top of the screen area. Touching the name tab of
any of the MENU sheets at this index will make that specific MENU be displayed.
Each MENU sheet displays specific information and includes touch icons that
perform MENU related functions.
1. MAIN MENU Sheet: The MAIN MENU indicates power flow and measured
values, while also offering operator sequence instructions (start/stop function etc.
- Password protection possible). The LCD panel allows the user to verify the
status and operation of the UPS Module components by the mimic display. The
following information is available on the MAIN MENU Sheet:
Display information:
a. Bypass Voltage and Frequency
b. Input Voltage and Frequency
c. Battery Voltage (and charge/discharge current)
d. Battery capacity remaining during power failure conditions
e. Output Voltage, Frequency and Current
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f.
g.
h.
i.
j.
k.
l.
Rectifier operation
Battery operation
Load on inverter
Inverter synchronized with bypass
Load on bypass
Equalize charge on
Alarm/Fault messages
Available operator sequence instructions:
a. Inverter start/stop
b. UPS start up/shutdown
c. Transfer of critical load to bypass source
d. Equalize charge to system battery
2. MEASUREMENT MENU Sheet: The MEASUREMENT MENU sheet indicates
details of measured values. The following data will be displayed on the
MEASUREMENT MENU Sheet:
a.
b.
c.
d.
e.
f.
g.
h.
Bypass Voltage and Frequency
Input Voltage and Frequency
Battery Voltage (and charge/discharge current)
Battery capacity remaining during power failure conditions
Output Power (kW)
Output Voltage (all phases including line to line and line to neutral)
Output Frequency
Output Current in RMS Amps and % (all phases including neutral).
3. SET UP MENU Sheet: The SET UP MENU Sheet prompts the user to select
specific performance and UPS setting data. (remote or local start & stop
operation, date & time adjustment, battery equalizing charge availability etc.)
4. LOG MENU Sheet: The LOG MENU Sheet indicates event and alarm/fault
information and battery discharge records. A maximum of 50 events can be
displayed. The following alarm/status information shall be available as a
minimum:
a.
b.
c.
d.
e.
f.
g.
h.
i.
Load on Inverter
Battery Low Voltage
Battery Operation
Output Overload
Rectifier Operation
Inverter Running Synchronously
Static Bypass Input Out of Range
Minor Fault Data
Major Fault Data
2.2.5.2 LED indication
The Operation/Display Panel contains the following LED indication:
a.
b.
c.
d.
98AEtypSMSspec_RevC.doc
Load on Inverter
Battery operation
Load on Bypass
Overload
(Green)
(Yellow)
(Green)
(Red)
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SP-0012 Rev. C 09/05/09
e.
f.
LCD Fault
UPS Fault
(Red)
(Red)
2.2.5.3 Emergency Power Off (EPO) button
The UPS shall be provided with a set of terminals which may connect to a remote
EPO contact signal. Remote contact shall be non-powered normally open. UPS shall
also have a unit mounted EPO button.
When the UPS Module EPO button is activated, the EPO function shuts down the
UPS module. The EPO function can be performed both local and remote. When
remote EPO is performed, all system UPS Modules will be shutdown and the critical
load dropped.
2.2.6
Microprocessor Interface/Diagnostics
2.2.6.1 Microprocessor Controlled Operator Guidance
The UPS’ microprocessor logic shall, as standard equipment, provide menu-driven
operator instructions detailing the operation of the UPS system. The instruction
menu shall be accessible via a LCD touch screen display located at the control panel.
The microprocessor shall monitor each step, thus prompting itself to the next step of
the instructions. The following instructions shall be available as a minimum:
a.
b.
c.
d.
e.
f.
Inverter stop.
Inverter start.
UPS shutdown.
UPS startup
Transfer of critical load to static bypass source.
Equalize charge to system battery.
2.2.6.2 Microprocessor Controlled Diagnostics
The UPS shall provide microprocessor controlled diagnostics capable of retaining
fault alarms along with metering parameters in the event of a UPS failure. The
microprocessor memory data shall be viewed via an LCD display located at the
control panel. The following alarm/status information shall be provided as a
minimum:
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
98AEtypSMSspec_RevC.doc
Load on Inverter
Inverter Operation
Battery Operation
Battery Low Voltage
Output Overload
Remote Operation
Battery Depleted
Battery Temperature Abnormal
Rectifier Operation
DC Breaker Open
Rectifier Input Out of Range
Equalize Charge Activated
Inverter Running Synchronously
Load on Bypass
Static Bypass Input out of Range
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p.
q.
2.2.7
Minor Fault
Major Fault
UPS Status and Function Interfacing
2.2.7.1 User Selectable Output Contact
The internal UPS logic shall provide, as standard equipment, a programmable two
sets of nine (9) normally open, A-type dry contact outputs to allow user interfacing of
the UPS operating status. The available parameters are identical to the alarm and
status information schedule itemized the following.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
Minor Fault
Load on Inverter
Battery Operation
Battery Low Voltage 1
Battery Low Voltage 2
Battery Depleted
Battery Temperature Abnormal
Rectifier Input Out of Range
Load on Bypass
Rectifier Operation
Inverter Running Synchronously
Overload
Bypass Input Out of Range
Summary Alarm
Major Fault (no selectable)
2.2.7.2 RS 232 Communication
The UPS shall have, as standard equipment, an RS 232 smart port allowing the user
to interface the UPS status information to a host computer. “DiamondLink” monitoring
software, or equivalent, shall be available to support the specified operating system.
Field installed, and field tested RS 232 additions shall not be accepted.
2.2.7.3 Input Ports
The UPS shall have, as standard equipment, nine (9) input ports. The input ports are
the following parameters:
a.
b.
c.
d.
e.
f.
g.
h.
Power Demand 1 to 7
Remote Start
Remote Stop
Battery Temperature Abnormal
CB1 ON Interlock
Another UPS rectifier operation
Asynchronous
EPO (Emergency Power Off) (no selectable)
2.2.7.4 Service functions
A. Waveform capture trace information:
Upon UPS failure, a trigger will initiate capture of UPS Module Waveform, logic
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and control signals. The capture duration will be for 10 cycles, 5 cycles pre trigger
and 5 cycles post trigger. The sampling frequency shall be 7.2kHz, therefore a
total of 120 samples per cycle will be taken. The captured data can be
downloaded to a PC and displayed on Mitsubishi Electric Software. The Software
allows selection of UPS Module Waveform, logic and control signals for display
and zoom functions. Waveform capture information assists service personnel for
troubleshooting and undertaking UPS Module failure root cause analysis.
B. Download Alarm and System Event log to PC.
2.2.8
(Option) Remote Status Alarm Panel
The UPS manufacturer shall offer a Remote Status Alarm Panel which shall not allow any
control over the UPS. The RSAP shall have, as standard equipment, a battery backup
feature allowing it to continue monitoring UPS status conditions during power outage
situations. Ride through shall be for a minimum of 8 hours. The RSAP shall act only as an
annunciation panel providing the following alarms/indications as a minimum:
a.
b.
c.
d.
e.
f.
g.
2.2.9
Rectifier on
Load on Inverter
Load on Bypass
UPS Failure
Output Overload
UPS in battery back-up mode
Low battery while in back-up mode
(Option) DiamondSync
The UPS manufacture shall offer a Sync circuit which shall allows any two or more
different UPS modules to sync into a master Sync source. The circuit allows both UPS
modules to operate in to a common output transfer cabinet and allows the load continue to
operate without any degradation to the load.
2.2.10 (Option) Common Battery
The customer is to advise if each UPS module is to have its own dedicated smaller battery
bank or if one large battery bank is required to operate the entire load.
2.3 MECHANICAL DESIGN
2.3.1
Cabinet Structure (Enclosure)
A. The enclosure shall be primed and painted with the Munsell 5Y7/1 (beige) color. The
enclosure shall be free standing floor mount design. The enclosure panels and doors
shall consist of minimum 14 gage steel for maximum strength and durability.
B. The UPS shall be installed in cabinets of heavy-duty structure meeting with NEMA
standard for floor mounting. The UPS shall be equipped with standard forklift
provisions to allow ease of installation using conventional lifting/moving equipment. The
UPS module cabinet shall have hinged and lockable doors on the front only. Operating
controls shall be located outside the locked doors. Input, output, and battery cables shall
be installed through the top or bottom of the cabinet.
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2.3.2
Serviceability
The UPS shall have front access for all servicing adjustment and connections only for
maintenance or service. Side access or rear access shall not be accepted. The UPS shall
be designed such that its rear can be pressed against a back wall and its sides can be
pressed against side walls.
2.3.3
Ventilation
Forced air cooling shall be provided to allow all components to operate within their rated
temperature window. Thermal relays, using a latched contact which is capable of being
reset, shall be used as overload protection to all cooling fans. Each fan shall employ a
separate thermal relay. All air inlets use washable air filters that shall be removable from
the front of the UPS without exposure to any electrical hazard. Air filters shall be door
mounted to prevent floor dust from being sucked into the unit. Bottom mount air filters shall
not be accepted.
2.3.4
Busbar
All busbar used for conductivity within the UPS shall be designed with COPPER ONLY.
Aluminum not acceptable
2.3.5
(Option) Eyebolts
Eyebolts shall be installed for lifting UPS. Four (4) heavy duty eyebolts will be installed
on each corner on top of UPS. Eyebolts are detachable (unscrew manually) once UPS is
set in installation area.
PART 3 EXECUTION`
3.1 SITE PREPARATION
The owner shall prepare the site for installation of the equipment.
3.2 INSTALLATION
A. The UPS shall be set in place, wired and connected in accordance with the approved
installation drawings and owners/technical manual delivered with equipment.
B. The equipment shall be installed in accordance with local codes and manufacturer’s
recommendation.
3.3 FIELD QUALITY CONTROL
A. The equipment shall be checked out and started by a customer support representative from
the equipment manufacturer. Visual and mechanical inspection of electrical installation, initial
UPS startup and operational training shall be performed. A signed service report shall be
submitted after equipment is operational.
B. The following inspection and test procedures shall be performed by field service personnel
during the UPS startup;
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SP-0012 Rev. C 09/05/09
1. Visual Inspection
a. Ensure that shipping members have been removed.
b. Ensure that interiors are free of foreign materials, tools and dirt.
c. Check for damage (dents, scratches, frame misalignment, damage to panel devices,
etc)
d. Check doors for proper alignment and operation.
2. Mechanical Inspection
a. Check all the power wiring connections for tightness.
b. Check all the control wiring connections for tightness.
3. Electrical Inspection
a. Check input and bypass for proper voltage and phase rotation.
b. Check battery for proper voltage and polarity.
4. Start-up
a. Energize the UPS.
b. Check the DC output voltage and inverter output voltage.
c. Check the inverter output voltage on battery operation.
d. Check for the proper synchronization.
e. Perform manual transfers and returns.
f. Perform auto transfers.
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Copyright © 2007, Mitsubishi Electric Power Products, Inc.
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