MITSUBISHI ELECTRIC 9900D 400V/415V Large Uninterruptible Power Supply Owner’s Manual

UNINTERRUPTIBLE POWER SUPPLY
MODEL
9900D 400V/415V
SPECIFICATIONS 

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 converter, system battery, solid-state inverter, automatic static bypass transfer circuit.
1.2 STANDARD
The UPS has been designed in accordance with and complies with the following standards:

1. UL 1778 (Underwriter Laboratories) Standard for UPS Equipment.
2. CSA 22.2 (Canadian Standards Association – cUL Equipment).
3. CE (European Conformity)
4. IEC (International Electro-technical Commission) Semiconductor Converter Standards.
5. EMI compatibility:IEC 62040-2 (category C3)
6. IEEE 587, ANSI C62.41 1991 Standard for Surge Withstand Ability.
7. 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) Converter.
2. Insulated Gate Bipolar Transistor (IGBT) Inverter.
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.
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 converter 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. 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 converter 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.
1.3.3 Expandability
The 1400kVA or smaller UPS units shall have provisions to expand their power rating as required by the customer.
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. Owner’s and Technical Manual (1).
D. Test Report.
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: +15 degrees C to +25 degrees C (59 degrees F to 77 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 1980 meter (6500ft).
7. There shall be no flammable / explosive gas.
8. Solid and chemical contaminants shall not exceed the following levels:

Maximum Value (See ote 3)
Sea salts| 0| 0
Sulfur dioxide (SO2)| <0.01 PPM| <0.03 PPM
Hydrogen sulfide (H2S)| <0.003 PPM| <0.01 PPM
Wet Chlorine (Cl2) relative humidity >50%| <0.0005 PPM| <0.001 PPM
Dry Chlorine (Cl2) relative humidity <50%| <0.002 PPM| <0.01 PPM
Hydrogen chloride| <0.0066 PPM| <0.0066 PPM
Hydrogen fluoride (HF)| <0.001 PPM| <0.005 PPM
Ammonia (NH3)| <1 PPM| <5 PPM
Ozone (O3) or other oxidants| <0.002 PPM| <0.005 PPM
Nitrogen oxides (NOx)| <0.05 PPM| <0.1 PPM
Aerosols| Oils| <5 PPB dry air|
Flora and Fauna| None (no presence or risk of growth of mold or fungus; negligible risk of damage from rodents, insects, or animals)
Note 1: Solid contaminant and particulate examples include, but are not limited to: sand, carbon dust, metal filings/dust, conductive/magnetic particles, and organic and inorganic dust and fibers
Note 2: Mean Value is defined as the average, long-term value
Note 3: Maximum Value is defined as the maximum value occurring over a period of time of not more than 30 minutes per day

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 75dB 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 twelve (12) months from the date of installation or eighteen (18) 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 Maintainability
MTTR: UPS component replacement should not exceed 1.5 hours/failure.
1.7.2 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. Series / kVA
2. Serial number
3. Date of test
4. Approved by / Inspected by / Tested by
5. Inspection of construction
6. Checking of wiring
7. Grounding continuity
8. Insulation strength test
9. Control circuit operation
10. Measurement of steady state characteristics (Voltage/ current/ efficiencies)
11. Transient characteristics (0-100% step load, AC input failure)
12. Overload testing
13. Transfer switch operation

PRODUCT

2.1 ELECTRIC CHARACTERISTICS
The UPS shall have the following electrical characteristics:
2.1.1 UPS Output Capacity
The 9900D Series UPS Module is available in the following sizes:

2.1.2 Battery Capacity
A. Discharge time to end voltage: ___ minutes at full load, 25 degrees C (77 degrees F).
2.1.3 AC Input
A. Nominal input voltage: 400V/415V
B. Number of phase: 3 phase, 3 wire, plus ground.
C. Voltage range: +15%, -20%.
D. Frequency and range: 50/60Hz ±10%.
E. Power walk-in time: 1-30 Seconds Variable, Default set at 10 seconds (0% to 100% load).
F. Power factor: > 0.98 Lagging
G. Reflected input current total harmonic distortion (THD):
1. 5% maximum at 100% load.
2. 10% maximum at 50% load.
2.1.4 Bypass Input
A. Nominal input voltage: 400V/415V
B. Number of phase: 3 phase, 4 wire, plus ground.
C. Synchronization voltage range: ±10% of nominal.
D. Frequency tracking range: 50/60Hz ±5% Maximum.
(Bypass synchronous range shall be selectable from ±1% to ±5% in 1% increments)
2.1.5 AC Output
A. Nominal input voltage: 400V/415V
B. Number of phase: 3 phase, 4 wire, plus ground.
C. Nominal dynamic Voltage regulation:
1. ±1% for balanced load.
2. ±2% for unbalanced load.
D. Voltage unbalance: ±2%
E. Manually adjustable output voltage: ±3% range.
F. Voltage transient response:
1. 100% step load: ±5%.
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 20 msec.)
G. Frequency (inverter synchronous): 50/60 Hz (tracks frequency of static bypass source).
H. Free running output frequency (asynchronous): 50/60 Hz ±0.01%.
I. Frequency slew rate (inverter synchronized to static bypass): 1 to 5Hz/second (selectable).
J. Output voltage harmonic distortion:
1. 2% maximum at 100% linear load.
2. 5% maximum at 100% non-linear load.
(Load power factor 1.00. Crest factor 2.3)
K. Voltage phase angle displacement:
1. ±1 degree for 100% balanced load.
2. ±3 degree for 100% unbalanced load.
L. Overload capability (1050 kVA, 1400 kVA, and 1750 kVA models):
1. 125% for 10 minute(s) (Voltage regulation maintained).
2. 150% for 1 minute(s) (Voltage regulation maintained).
M. Fault clearing: Typically 500% for 1 cycle (utilizing bypass source).
2.1.6 DC Input and Battery

1. The Battery System shall be sized to provide the specified back-up time to the inverter when the UPS is supplying 100% rated load.
2. 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:

A. Lead Acid Battery
● Float Voltage: 545V DC (2.25 to 2.27 V/cell)
● Final Voltage: 400V DC (1.67 V/cell)
B. Lithium Ion battery systems shall be sized according to the specific cell chemistry chosen.
2.1.7 Efficiency

2.2 COMPONENTS
UPS module shall be comprised of the following:
2.2.1 Converter Section:
AC input, converter input contactor, and converter utilizing:
2.2.1.1 IGBT Converter
A. General
The Converter shall convert the incoming AC power into regulated DC power to supply the inverter input and system battery. The Converter shall utilize the following technologies:
a. Solid state Pulse Width Modulation (PWM) controlled three-level Insulated Gate Bipolar Transistors (IGBT).
b. Input Power: Rated kVA at 1:1 ratio.
c. DSP based control logic.
B. Reflected Harmonic Content
The IGBT converter shall not introduce more than 5% reflected input current total harmonic distortion (THD) into the utility AC input source at nominal voltage and rated load. The reflected input current shall not exceed 10% THD at 50 % load.
C. Automatic Input Power Walk-in
The converter logic and control circuit power walk in function enables delayed and timed ramping of input current. Subsequent to energizing the converter input, initiation of the power walk in function and current ramping shall be delayed by a maximum of 3600 seconds. 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 converter control circuitry.
D. Input Overcurrent Protection
Converter input contactor, and the input current limit control shall provide converter protection against excessive input overload conditions.
E. Input Current Limit
The Converter logic shall provide input current limiting by limiting the AC input current. Three (3) line-side current transformers shall be employed as a means of sensing the current amplitude. The DC output current limit values are as follows:
a. Input current limit setting:
1. 110% of nominal rated current for 1050 kVA, 1400 kVA, and 1750 kVA models
b. The AC input current limit shall be set up so that the converter can provide sufficient capacity to the inverter at rated load and have the capability to recharge a discharged battery.
c. The input current limit protects converter components from damage due to excessive input current.
F. Input Power Demand
The Converter 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 generator).
a. Power Demand setting:

1. Adjustable, maximum 110% of nominal rated current for 1050 kVA, 1400 kVA, and 1750 kVA models

2.2.1.2 Charger/Booster
A. General
The charger/booster utilizes solid state Pulse Width Modulation (PWM) controlled Insulated Gate Bipolar Transistors (IGBT).
B. Battery Charge Current Limit
The converter 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 converter output when the set limit is reached. The following battery current limit shall be provided as a minimum:

1. Battery charge current limit: 10% of battery Ah rate.
2. Maximum charge current: 20% ampere of UPS rated kVA.

C. Equalize Charge Timer
UPS Module logic and control shall provide an electronic equalize charge timer function (0 to 100hour 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 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. Temperature Control Battery Charging
The UPS shall have as standard a battery temperature compensation function allowing the converter 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 fuse/contactor arrangement shall provide DC input protection against excessive input overload conditions.
F. Ripple Current
The DC (battery) bus RMS ripple current shall be less than 10% of the battery AH at DC/DC chopper circuit switching frequency at 100% load.
G. Ripple Voltage
The UPS shall provide for maximum battery life by maintaining ripple voltage in the operating range of DC – 1kHz to less than 2% of nominal battery system voltage at 100% load.
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. The Diamond-Sense Battery Self-Test function can be performed even when load is on inverter.
2. Due to the short duration small power discharge, there is no effect to battery life expectancy.
3. The small power discharge has negligible effect on the overall battery backup 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.
2.2.2 Inverter
A. General
The inverter shall generate AC power derived from DC power supplied from the converter 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 three level IGBT power transistor modules.
2. UPS Module Full Direct Digital Control (DDC) Adoption:
a. Field Programmable Gate Array (FPGA) Control
b. DSP based Control
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 within ±3% of the nominal value.
D. Voltage Transient Response
The dynamic regulation and transient response shall not exceed ±5% 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 20 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 50/60Hz ± 0.01% continuously for the duration of loss of the external reference. 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 Voltage 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:
1050 kVA, 1400 kVA, and 1750 kVA models
125% for 10 minute duration.
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 230% 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).
J. Inverter Output Isolate
The inverter output contactor isolates the inverter from the load and bypass source.
2.2.3 UPS Module Control and Monitoring
A. UPS Module Control and Monitoring operates and controls the 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. All UPS Module Control and Monitoring printed circuit boards shall be effectively sealed to protect against corrosive vapors.
D. The UPS Module Control power supply employs a redundant design conf iguration, utilizing the UPS AC input (utility), Bypass input 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 Thyristor 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. Inverter output undervoltage or overvoltage.
2. Overloads beyond the capability of the inverter.
3. DC circuit undervoltage or overvoltage.
4. Final voltage of system battery is reached (bypass source present and available).
5. Major fault.

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 five 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 re-transfers 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 retransfers 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
The static switch shall be a high speed transfer device comprised of naturally commutated Thyristors. 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 10.4” touch screen interface which allows lock-out of all UPS control function for security (The Emergency Power Off function shall not be locked out). The operator interface shall provide the following:

1. UPS start-up procedure
2. UPS shutdown procedure
3. Emergency Power Off (EPO)
4. Audible alarm silence
5. System status levels

The UPS module shall be 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 10.4” Liquid Crystal Color Display (LCD):
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 five MENU pages: STATUS, TRANSFER, UPS LOGS, MODULE STATUS and SET TIME. The LCD header area contains the menu button which will open a dropdown menu and allow access to each page. Touching the name of the menu screen in the dropdown menu will take you to the selected menu page. Each MENU page displays specific information and includes touch icons that perform MENU related functions.

1. STATUS Page: The STATUS Page indicates power flow and measured values.
   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:
   a. Converter operation
   b. Battery operation
   c. Load on inverter
   d. Load on bypass
   e. Typical measurement values of Input, Bypass, Battery and Output
   f. Detailed measurements of Input, Bypass and Output. This is found by pressing the words BYPASS, INPUT or OUTPUT on the screen. These measurements include the following information:
   i. Input Voltage and Frequency
   ii. Bypass Voltage and Frequency
   iii. Output Voltage, Frequency and Current
   iv. Output active power
   v. Output power factor
   g. Alarm/Fault messages

2. TRANSFER Page: The TRANSFER Page contains the buttons to start and stop the inverter, as well as transfer the load to inverter or bypass. If the system is an MMS system, there will be a separate MMS transfer button that will take user to an MMS transfer page.
   a. MMS TRANSFER Page contains separate mimic buses for all UPS’s contained in the system. The page also contains the buttons to transfer to inverter or bypass. These functions may be inhibited if all the UPS systems are not online.

3. UPS LOGS Page: The UPS LOGS Page contains buttons that will access the UPS Event Logs, Battery Logs, Module Event Logs, and Other UPS Status (MMS Only). These logs will contain all relevant information for the UPS or Module events.

4. SET TIME Page: The SET TIME Page contains operator access to change the system time. Also on this page is a Maintenance Mode soft button to access Maintenance mode. This button is password protect with a 4-digit PIN that is setup in the main software.

2.2.5.2 LED indication
The Operation/Display Panel contains the following LED indication:
a. Load on Inverter (Green)
b. Battery operation (Orange)
c. Load on Bypass (Orange)
d. Overload (Orange)
e. LCD Fault (Red)
f. UPS Fault (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 locally and remotely. When 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. Inverter stop.
b. Inverter start.
c. Transfer of critical load to static bypass source.
d. 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 or LED located at the control panel. The following alarm/status information shall be provided as a minimum:
a. Load on Inverter
b. Inverter Operation
c. Battery Operation
d. Battery Low Voltage
e. Output Overload
f. Remote Operation
g. Battery Depleted
h. Battery Temperature Abnormal
i. Converter Operation
j. DC breaker Open
k. Converter Input Out of Range
l. Equalize Charge Activated
m. Inverter Running Asynchronously
n. Load on Bypass
o. Static Bypass Input out of Range
p. Minor Fault
q. Major Fault
2.2.7 UPS Status and Function Interfacing
2.2.7.1 Output Contact
The internal UPS logic shall provide, as standard equipment, a programmable set of eight (8) 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. Total Alarm
b. Minor Fault
c. Alarm
d. AC Input Abnormal
e. Bypass Abnormal
f. Battery Abnormal
g. Battery Low Voltage
h. Battery Depletion
i. Overload
j. Overload Prealarm
k. Fault Group 1
l. Fault Group 2
m. Synchronous
n. Asynchronous
o. Remote Operation Enable
p. Load on Inverter
q. Load on Bypass
r. Load On AC
s. Battery Operation
t. Converter Operation
u. Inverter Operation
v. CB1 Close
w. CB2 Close
x. 52S Close
y. Power Demand
z. Equalizing Charge
aa. Another Bus Synch OK
2.2.7.2 Integrated UPS Communications Protocols (LookUPS)
The UPS shall have factory installed integral communications system capable of communicating real-time UPS data to a Building Management Systems (BMS) or other information/analytical systems. These communication protocols shall be user selectable and comprised of MODBUS RTU (RS232/485/422); MODBUS TCP/IP (Ethernet); Simple Network Management Protocol (SNMP) Simple Mail Transfer Protocol (SMTP); and Web Browser.
2.2.7.3 Input Ports
The UPS shall have, as standard equipment, EPO (Emergency Power Off) and selectable four (4) input ports. The selectable input ports are the following parameters:
a. Remote Start
b. Remote Stop
c. Power Demand 1
d. Power Demand 2
e. Battery Liquid Low
f. Battery Temperature Abnormal
g. Generator Operation
h. Asynchronous Operation
i. Anther Bus Synch
j. Remote Inverter Supply (MMS)
k. Remote Bypass Supply (MMS)
l. Ext Byp dV Str
m. Battery Charger Limit 2
n. Charger Stop
o. External Alarm
p. CB2 Ex
2.2.8 (Option) Remote Status Alarm Panel
The UPS manufacturer shall offer a Remote Status Alarm Panel (RSAP), 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. Converter on
b. Load on Inverter
c. Load on Bypass
d. UPS Failure
e. Output Overload
f. UPS in battery back-up mode
g. Low battery while in back-up mode
2.2.9 (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 into a common output transfer cabinet and allows the load to continue to operate without any degradation to the 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 16 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, bottom or left side of the cabinet.
2.3.2 Serviceability
The UPS shall have front access for all servicing adjustments and connections only for maintenance or service. Side access or rear access shall not be required. 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. Forced air shall be provided with high quality fans. Thermal relay, using a latched contact which is capable of being reset, shall be used as overload protection to cooling fan. All air inlets use 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 (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.

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 owner’s / technical manual delivered with equipment.
B. The equipment shall be installed in accordance with local codes and manufacturer’s recommendation.
C. The manufacturer shall provide installation and startup supervision.
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:

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.

UNINTERRUPTED Peace of Mind®
In no event shall MEPPI be liable for the accuracy, completeness or usefulness of the following specifications or for any mod ification(s) to the following specifications for which MEPPI has not approved or authorized such modifications. Further, MEPPI shall not be liab le for any special, incidental, indirect, punitive or consequential damages arising out of or in connection with the use of such specifications.
Copyright © 2019, Mitsubishi Electric Power Products, Inc. U-ENS00085 Rev 1

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