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TOSHIBA International Corp
GUIDE SPECIFICATIONS
THREE PHASE UNINTERRUPTIBLE POWER SYSTEM
TOSHIBA 4200FA
25 kVA CT – Internal Battery
UPS GUIDE SPECIFICATIONS
4200FA CT
March 4, 2010
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H. Input / Output EMI / RFI Filters
System Operation
2.3
The UPS shall operate as an on-line, fully automatic system in the
following modes:
A. NORMAL - Incoming AC power is boosted using a chopper circuit,
and converted into DC power. The DC power is then used to charge the
battery bank while at the same time providing clean, DC power to the
inverter circuitry. The inverter converts DC power to regulated AC power
which feeds the load.
B. EMERGENCY - Upon failure of commercial AC power, the UPS shall
derive power from the battery bank and continue feeding the load with
clean, regulated AC power. There is no interruption to the critical load
upon failure or restoration of commercial AC power.
C. RECHARGE - Upon restoration of the commercial AC source, the
rectifier/chopper powers the inverter while simultaneously recharging the
battery bank. The UPS shall have the following recharge process:
a) a constant level of current is used to recharge the batteries (the
process shall utilize a current-limit function to prevent overcharging
batteries, thus extending the life of the batteries)
b) as the batteries reach the normal charge level, a constant-voltage
control shall begin which causes the battery recharge current to
gradually decrease
c) Under normal operation, the UPS battery bank "floats" at the 2.25-2.27
volts per cell DC level to stay fully charged and ready for the next
discharge.
D. BYPASS MODE - Upon detection of an internal fault or output
overload, the UPS shall automatically switch from inverter power to an
internal bypass via the static switch.
Transfer shall be within 4
milliseconds, causing no interruption to the critical load. While in bypass,
the UPS shall protect against spikes and common/normal mode noise by
utilizing a dual-winding output isolation transformer. “Return from Bypass
mode” shall be an automatic function, without interruption to the critical
load. Transfer to Bypass may also be performed as a manual operation
via the UPS front panel.
E. POWER CONDITIONING MODE - Should the batteries be removed
from the UPS, the UPS shall continue to function and still provide
4200FA CT
March 4, 2010
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protection against spikes, common/normal mode noise, load steps and
frequency shifts (without battery back-up capability).
3.0 SYSTEM PARAMETERS
A. UPS Input
1) Input Voltage
208/120VAC
2) Input Voltage Requirement
3) Voltage Variation
4) Rated Frequency
5) Frequency Range
6) Power Factor
3 Phase, 4 Wire + Ground
+10% to -30%
50/60 Hz
45 - 65 Hz
> 0.98 lagging
7) Input Capacity
110% of UPS Output Capacity
From 20% to 100% over 5 seconds
116% of nominal capacity
< 600% under synchronous condition
< 3% Total Harmonic Distortion (THD)
Meets ANSI C62.41 (IEEE 587)
Standard front-panel alarm panel shall
notify user that unit has been supplied
with incorrect phase rotation on input to
allow for correct installation. The UPS
shall be fully protected to prevent
damage from this event.
8) Walk-In Function
9) Input Current Limit
10) Inrush Current
11) Input Current THD
12) Surge Withstandability
13) Input Phase Rotation
(Protection/Detection)
B. UPS Output
1) Rated Voltage
208/120VAC
2) Output Voltage Requirements 3 Phase, 4 Wire + Ground
3) Output Capacity
25 kVA
4) Rated Load Power Factor
5) Voltage Regulation
0.8 lagging
+/- 2% nominal (balanced load)
+/- 3% nominal (unbalanced load)
+/- 5% manually (by front panel user
interface)
+/- 2 deg. (balanced load)
+/- 4 deg. (100% unbalanced load)
50/60 Hz (jumper selectable)
+/- 0.01% free running
6) Voltage Adjust. Range
7) Phase Displacement
8) Rated Frequency
9) Frequency Regulation
10) Frequency Synch. Range
+/- 0.5/1.0/1.5 Hz (+/- 1.0 Hz Standard)
User selectable
11) Frequency Slew Rate
12) Voltage Transients
1.0 Hz/second to 3.0 Hz/second
+/- 5% (100% step load change)
4200FA CT
March 4, 2010
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+/- 3% (loss or return of input power)
+/- 8% (bypass to inverter)
13) Transient Voltage Recovery 50ms maximum to within 2% of nominal
14) Overload Cap. (on inverter) 125% for 90 sec., 150% for 30 sec.
15) Overload Cap. (on bypass) 1000% for 10ms, 125% for 10 min.
16) Crest Factor
2.5 – 3.0 within the kW range.
17) Harmonic Voltage Distortion 1.5% THD maximum, 1% maximum for
any single harmonic (linear load)
18) Inrush Current Protection
Automatic transfer to bypass, then auto-
return to inverter ( retransfer may be
inhibited by jumper)
19) Output Overcurrent
Hall-Effect Current Transformer and
Fusing
C. Batteries
1) Battery Type: Sealed, Valve Regulated Lead Acid cells
2) Protection Time:
Each standard matching battery pack shall provide
the minimum run-time:
-
5 minutes back-up time @ 25 kVA
3) DC Voltage Range:
UPS Capacity
Nominal Voltage
Alarms Voltage(V low)
Shutdown Voltage (V min)
25 kVA
288 VDC
252 VDC
216 VDC
4) Ripple Voltage: 2% RMS maximum
D. Environmental
1) Efficiency: 85% (AC/AC); 87% (DC/AC)
2) Operating Temperature: UPS: 32 to 104 F (0 to 40 C)
Battery: 68 to 77 F (20 to 25 C)
3) Storage Temperature: UPS: -4 to 140 F (-20 to 60 C)
Battery: prolonged storage above 104 F
(40 C) causes rapid battery degradation
4) Relative Humidity: 30-90% (non-condensing)
5) Audible Noise: 60 dB („A‟ scale @ 1 meter)
6) Altitude: < 6,000-ft. maximum (< 2,000 m)
4200FA CT
March 4, 2010
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4.0 FUNCTIONAL DESCRIPTION
A. Converter / Charger / DC Chopper
DESCRIPTION - The converter/charger shall consist of a solid-state three
phase rectifier, DC to DC converter (chopper), output filter, and transient
suppresser network to regulate and maintain DC power to the inverter.
1) TRANSIENT SUPPRESSER - The incoming AC utility shall first be
connected to a molded case circuit breaker as a means of disconnecting
power to the UPS. Power shall flow through a surge absorber to prevent
large transients from passing through to the load or damaging the
batteries. Power shall then flow through a line filter to prevent sags or
surges from passing to the load.
2) CONVERTER/CHARGER - The converter shall serve to change
incoming AC power to DC, which shall be supplied to the DC chopper.
From this point, DC power is used to recharge the battery bank while
simultaneously providing power to the inverter.
a) Input Frequency Range: 45-65 Hz, continuous, without battery
operation
b) Capacity: Battery recharge shall be to within 90% of nominal
from a fully discharged state in 10 times the discharge time.
3) DC CHOPPER - The chopper circuit shall consist of inductors,
capacitors, diodes and IGBT's (Insulated Gate Bipolar Transistors). The
chopper shall have the function of providing start-up protection (by
checking phase rotation of incoming utility power), boosting the DC to the
inverter (during low AC input voltage conditions), providing power factor
enhancement, and reducing reflected harmonics to incoming utility power.
B. Pulse Width Modulated (PWM) Inverter
DESCRIPTION - The PWM (Pulse Width Modulated) inverter shall
incorporate an advanced IGBT design, an output isolation transformer,
and output overcurrent protection for clean, regulated output power to the
critical load.
1) INVERTER - The inverter network shall consist of a high speed IGBT
switching network designed to supply non-linear loads with a clean and
steady voltage waveform. The inverter switching speed shall be fast
enough to limit audible noise to 60 dBA at 3 feet (measured on „A‟ scale).
4200FA CT
March 4, 2010
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2) OVERCURRENT PROTECTION - The output circuitry shall be
equipped with a Hall Effect Current Transformer to detect and protect the
inverter from excessively high currents.
C. Static Bypass Switch
1) TRANSFER - The static bypass switch shall consist of thyristor
switches in conjunction with an output contactor to permit manual
switching from bypass to UPS and UPS to bypass without power
interruption. The UPS shall instantaneously transfer to bypass should a
component fail during normal operation (provided the UPS and bypass
are in synchronization). Auto-retransfer to UPS after an overload
condition shall be completed within one second after the bus has dropped
to 100% of nominal.
2) REMOTE RUN/STOP - A set of normally open dry contacts shall be
provided to remotely transfer the UPS on-line and off-line. When the UPS
is in this mode of operation, the UPS front control panel shall be disabled
to provide a secured configuration.
D. Microprocessor Control System
1) DESCRIPTION - The UPS system shall be provided with a highly
reliable microprocessor internal control system to perform start-up,
transfers, monitoring, and battery recharging. The microprocessor shall
provide important information to the user (via a liquid crystal display) with
such as system status, fault messages and input and output parameters.
2) LED INDICATORS - The following LED indicators shall be provided on
the UPS front panel displays, which mimic power flow through the UPS:
a) AC INPUT (Green Lamp) - Lights when normal AC input power
is being supplied to the unit.
b) INVERTER (Green Lamp) - Lights when the UPS unit‟s inverter
is normal.
c) BATTERY (Green Lamp) - Lights when the batteries are
discharging: flickers when the battery voltage is below minimum.
d) BYPASS (Green Lamp) - Lights when in circuit-bypass mode.
d) FAULT (Red Lamp) - Lights when a fault has been detected.
See “System Diagnostics” for specific fault.
3) SYSTEM METERING - The UPS shall be provided with a single read-
out display which displays, upon request, the following information:
AC INPUT VOLTAGE (Line to Line)
4200FA CT
March 4, 2010
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AC OUTPUT VOLTAGE (Line to Line, Line to Neutral)
AC OUTPUT CURRENT
BATTERY VOLTAGE
BATTERY CHARGING CURRENT
INPUT FREQUENCY
OUTPUT FREQUENCY
INPUT/ OUTPUT kW
POWER FACTOR
4) SYSTEM DIAGNOSTICS - The following diagnostic information shall
be provided to troubleshoot the UPS should a fault occur:
UPS Ok
Memory Error
UPS Overload (including Bypass)
Inverter Output Current Limit
Wrong Phase Rotation of AC Input Low Battery Voltage
Internal AC Circuit Fault
Internal DC Circuit Fault
Heatsink Overheat
I/O not Synchronized
Auto-transfer Mode
Fuse Open
DC unbalanced
Battery Discharging Mode
UPS Output Disabled
DC Circuit Over/Under voltage
DC Circuit Overcurrent
Chopper Input Overcurrent
Inverter Overcurrent
Inverter Over/Under voltage
Inverter Overload
5.0 MECHANICAL DESIGN
A. UPS Enclosure
The UPS shall be in a freestanding, NEMA1 enclosure equipped with
casters and leveling feet. The overall dimensions and weights shall be as
follows (without internal batteries):
UPS Size
25 kVA
Dimensions
20.0”W x 36.3”D x 59.7”H
Weight
910 lbs.
B. Cable Entry
The UPS shall be provided with cable entry from the bottom, top and rear
of the UPS enclosure.
4200FA CT
March 4, 2010
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C. Ventilation and Maintenance Requirements
The UPS shall require the following minimum space for ventilation and
maintenance: 28” (front), 18” (top), 6” (rear), and 0” (side).
6.0 STANDARD FEATURES
A. Emergency Power Off (EPO)
Emergency Power Off (EPO) terminals which trip open the UPS and
battery circuit breakers.
B. RS232 Communication Interface
Serial data link will enable the UPS to interface with a computer to
provide power status and diagnostic information.
C. DB9 Dry Contact interface
The following normally open dry contacts shall be provided through a DB9
male connector located inside the front door:
1) UPS On
2) Bypass Active
3) Input Power Loss
4) Battery Voltage Low
D. Battery Test Function
The UPS shall be provided with a “Battery Test” pushbutton to periodically
check the condition of the batteries. Upon detection of a battery problem,
the UPS shall notify the user of this condition allowing the user to perform
a detailed check of the battery string.
7.0 SERVICE AND WARRANTY
A. Reliability
System mission reliability 240,000** hours and including bypass MTBF
(Mean-Time-Between-Failure) shall be in excess of 3,000,000**hours.
4200FA CT
March 4, 2010
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B. Maintainability
Calculated and demonstrated MTTR (Mean-Time-To-Repair) shall be 30
minutes including time to diagnose the problem and replace subassembly.
C. Warranty
The UPS system shall be provided with a comprehensive three-year on-
site warranty (when purchased with a Factory-Authorized Start-up).
The warranty shall cover parts, labor, travel and freight for the UPS. The
battery system has a full 2 year warranty with 3 year‟s prorata total of 5
year warranty. Typical on-site response time shall be 4 hours (24 hours
maximum). The warranty period shall expire three years for UPS and two
years for the battery system from date of shipment from manufacturer‟s
facility.
*Specification subject to change without notices.
**Times are accurate provided normal Preventative Maintenance procedures are
followed.
4200FA CT
March 4, 2010
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