Your Mitsubishi Uninterruptible Power System (UPS) is designed to provide many years of
reliable protection from power failure, brown-outs, line noise, and voltage transients. To
ensure optimum performance of the equipment, follow the manufacturer's instructions. This
manual contains descriptions required to operate the UPS. Please read this manual carefully
and retain it for future reference.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the 9700 Series Uninterruptible Power Supply
Systems that should be followed during installation and maintenance of the UPS and batteries.
WARNING 1
Lethal voltages exist within the equipment during operation. Observe
all warning and cautions in this manual. Failure to comply may result in
serious injury or death. Obtain qualified service for this equipment as
instructed.
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WARNING 2
This UPS does not include a Bypass Input circuit breaker (MCCB). The
Bypass Input contactor (CB3) does not protect against load induced
short circuits. The bypass input circuit breaker (MCCB) is field supplied
and installed. Breaker(MCCB)'s Specifications are as follows:
Capacity (kVA) Bypass Voltage (VAC) Maximum Bypass
Rating (AAC)
Recommended
Breaker (A)
100 208 278 350
100 480 120 150
100 600 96 100
150 208 416 500
150 480 180 225
150 600 144 150
225 208 625 700
225 480 271 300
225 600 217 225
300 480 361 400
300 600 289 300
375 480 451 500
375 600 361 400
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WARNING 2
This UPS does not include a Bypass Input circuit breaker (MCCB). The
Bypass Input contactor (CB3) does not protect against load induced
short circuits. The bypass input circuit breaker (MCCB) is field supplied
and installed. Breaker(MCCB) 's Specifications are as follows :
Capacity (kVA) Bypass Voltage (VAC) Maximum Bypass
The Mitsubishi 9700 Series UPS is designed to provide continuous, clean electrical power
to your critical load and to monitor power conditions affecting that load. In the event of an
input power failure, the UPS will supply power to the critical load for the specified battery
time.
If the input power is not restored promptly, back up power from the UPS battery permits
the orderly shutdown of equipment supported by the UPS. The UPS is simple to start-up,
operate and maintain.
The 9700 Series UPS is available in five kVA sizes-100, 150, 225, 300, 375kVA.
Specifications for each kVA model appear in Section 1.3. The principles of operation
described herein are applic able to all models.
This manual provides an overview of the 9700 Series components and their functions. It
describes the appearance and purpose of operator controls and indicators. It contains
procedures for operation, start - up, shut dow n, and basic maintenance.
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1.1 Definitions
UNINTERRUPTIBLE P OWER SUPPL Y SYSTEM (UPS) - All components within the UPS
Module Cabinet includes the batteries which function as a system to provide continuous,
conditioned AC power to a load. This is sometimes referred to as the "Sy s t em".
UPS MODULE CABINET - The metal enclosure which contains the Converter / Charger,
the Inverter, the Static Transfer Switch, the Internal Bypass line, the operator controls, and
the internal control syste m requ ired t o provide specified AC
power to a load.
UPS MODULE - The Converter / Charger and Inverter assemblies which, under the
direction of the internal control system and operator controls, provide specified AC power
to a load.
CONVERTER / CHARGER - The UPS components which contain the equipment and
controls necessary to convert input AC power to regulated DC power required for battery
charging and for supplying power t o t he I nverter.
INVERTER - The UPS components which contain the equipment and controls necessary
to convert DC power from the Converter / Charger, or the battery, to AC power required by
the critical load.
STATIC TRANSFER SWITCH - The device which connects the critical load to the bypass
line when the UPS mo dule cannot supply continuous power.
BYPASS LINE - The line which conducts electricity directly from the input power source to the
critical load during Maintenance or whenever the UPS is not completely operational.
INPUT POWER - Power provided by the electrical utility company, or auxiliary generator,
which is connected to t he UPS for supplying the critical load.
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1.2 Overview
The UPS provides two power paths between the utility source and the critical load as
shown in figures 1.1 and 1.2.
A) Through the UPS Module (FIGURE 1.1)
FIGURE 1.1 Single Line Diagram - Normal Operation
AC Bypass
ut
In
AC input
CB
Use supplied
MCCB
CB1
CB3
CONVERTERINVERTER
Static Tr ansfer
Switch
52S
Output
52C
CB2
UPS ModuleBattery cabinet
Power Flow
ot in Use
When the load is on the Inverter, the internal control system determines which of the two
paths supplies power to the load. During normal operation, the path through the UPS
module is used.
Input AC power flows through the UPS where it is converted to DC by the Converter /
Charger. This DC power is utilized to charge the UPS battery and to provide power to the
Inverter. The Inverter converts t he DC power to clean AC power to supply the critical load.
The conversion - inversion process eliminates any voltage transients or fluctuations
existing in the input power before it reaches the critical lo ad.
* The Bypass Input circuit breaker (MCCB) for protection of the UPS and cables is field
supplied and field inst al led. (See WARNING 2 on page iv)
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B) Internal Static Bypass Li ne (FI GURE 1.2)
The Internal Static Bypass line is a Hard wired line through CB3, contactor 52S which
supplies the critical load with unconditioned input power. The purpose of this line is to
route power to the critical load while the UPS module is de-energized during Start-up
before the system is fully operat ional.
FIGURE 1.2 Single Line Diagram- Bypass Operation
AC Bypass
In
ut
AC input
CB
Use supplied
MCCB
CB1
CB3
CONVERTER
INVERTER
CB2
C) Inverter supply at battery operation (FIGURE 1.3)
FIGURE 1.3 Single Line Diagram - Battery Operation
AC Bypass
In
ut
AC input
CB
Use supplied
MCCB
CB1
CB3
CONVERTERINVERTER
Static Transfe
Switch
52S
Output
52C
Power Flow
ot in Use
UPS ModuleBattery cabinet
Static Tr ansfer
Switch
52S
Output
52C
CB2
UPS ModuleBattery cabinet
Power Flow
ot in Use
If the input power is int er r upt ed, the battery will i m mediately supply t he DC power required
by the Inverter to maintain continuous AC power to the load. A fully charged battery will
provide power for the specified ti me at t he rat ed load, or longer, at a reduced load.
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When power is restored after a low battery shutdown, the Converter automatically restarts
operation, recharges the batteries, and the Inverter is automatically restarted without
operator intervention. The load is assumed by the inverter automatically without operator
intervention.
In the event of a power failure, the rectifier will de-energize and the batteries will discharge
into the inverter and maintain power to the critical until a) the battery capacity expires and
the inverter turns off, or b) input power is restored after which the converter will power the
critical load and simultaneously recharge the batteries. Figure 1.3 illustrates the flow
diagram during battery operation.
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FIGURE 1.4-a UPS Parts Location (100kVA)
UPS module
FRONT VIEW
Converter &
Inverter Unit
DC capacitor
2. CB101
CB3
AC input capacitor
AC capacitor
52C
Static
Transfer
Switch
1. CB1
3. External
contact
signal
terminal
block
52S
4. Grounding Bar
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FIGURE 1.4-b UPS Parts Location (Continued)
UPS module
BACKSIDE OF FRONT DOOR
6. Switch PCB
DPAU-55
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Inverter
Start/Stop switch
7. Error RESET
Buzzer Stop
LCD panel
5. Emergency
bypass
switch
Main PCB
UPER
Relay PCB
RYDR
INV
START
SYN
8. CN45
RS232C
Connector
BYP INV
DPAU-55
9.SW4
Load on Bypass switch
CNV SW BUZ
ON
OF
MAINT TEST
O
OF
11.SW8
TEST switch
10.SW7
Maintenance
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Description of Figure 1.4:
1. AC Input circuit breaker (CB1) Circuit breaker for converter input power .
2.Control Power circuit breaker(CB101)
3. External contact signal terminal block Terminal block to c onnect cont act sign al in put/ output
lines to and from the external devices. Refer to FIGURE 2.4 for details.
4.Grounding bar (E)
5. Emergency bypass switch. This switch activates bypass power supply for emergency
reasons if the UPS is turned off. Normal position is “TR ANSF ER is PERFO RM ED”
6.Switches on the DPAU-54(PCB) (FOR SERVICE PERSONNEL ONLY)
Normally the customers do not have to operate those switches.
- SW4 (Load on Bypass switch) (9)
- SW3 (Maintenance Set button) (10)
- SW5 (TEST Switch): Normal = “Off” side. ()
- SW6 (Error RESET) (11)
7. "Error reset" switch This switch resets errors resulting from alarm conditions.
(Do not operate this switch while inverter and converter are in operation.)
8. RS232C connector (CN45)
9. Bypass manual change-over button (FOR SERVICE PERSONNEL ONLY)
This switch is used to transfer the UPS from inverter to static bypass for maintenance
purposes. Do not oper ate it under norm al operation. T ransfers will be loc k-out if the bypass
voltage is more than +10%,-10% of nominal.
1) Uninterrupted switching is made at the time of synchronous operation. Switching is
impossible at the time of asynchronous operation.
2) Return to “Normal” after use.
10. Maintenance (Set) button This switch sets the UPS menu parameters.
11. "Test mode" switch This switch should be operated by Authorized Service Personnel only.
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1.3 Specifications
The UPS name plate displays the rated kVA as well as nominal voltages and
currents. The name plate is located on the interior side of the UPS front door.
TypeVRLA, Flooded Lead Acid, Nickel Cadmium
Ride ThroughApplication Specific
Nominal Voltage360 VDC
Minimum Voltage290 VDC
Number of Cells176 ~ 185
AC OUTPUT
Configuration3 phase, 3 or 4 wire
Voltage120/208 V, 277/480 V, 346/ 600 V
Voltage Stability
±1%
Frequency60 Hz
Frequency Stability
±0.01% in free running mode
Power Factor0.8 nominal0.9 nominal
Power Factor range0.8 ~ 1.0 lagging (within output kW rating)
Voltage THD2% maximum THD at 100% Linear Load
5% maximum THD at 100% non-linear load
Transient Response
±2% maximum at 100% load step
±1% maximum at loss or return of AC power
±5% maximum at load transfer to/from static bypass
Transient RecoveryLess than 1 line cycle
Voltage Unbalance1% maximum at 100% unbalanced load
Phase Displacement1% maximum at 100% unbalanced load
Inverter Overload125% for 10 minutes; 150% for 1 sec
System Overload500% for 2 cycle (with bypass available)
Bypass Overload125% for 10 minutes
Withstand Rating65kA* *:with optional fuses
ENVIRONMENTAL
CoolingForced Air
Operating Temperature
2° F ~ 104° F (0° C ~ 40° C). Recommended 68° F ~ 86° F
(20° C ~ 30° C)
Relative Humidity5% ~ 95% Non Condensing
Altitude3300 Feet ( 1000 meters); 5000 feet @ 0.99 derating
LocationIndoor (free from corrosive gases and dust)
Paint ColorMunsell 5Y7/1 (Beige)
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TABLE 1.5 Rating of Circuit Breakers (MCCB) and Fuses