Specifications

U-ENS00011_99AtypSMSSpec_Rev2.doc
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Copyright © 2008, Mitsubishi Electric Power Products, Inc.
U-ENS00011 Rev2 12/9/08
follows:
x Float Voltage: 545V DC (2.25 to 2.27 V/cell)
x Final Voltage: 400V DC (1.67 V/cell)
2.1.7 Efficiency
UPS Module
Capacity (kVA)
Battery to AC AC to AC
100% 75% 50% 25% 100%
75%
50% 25%
80 95.6 94.9 94.6 92.9 95.6 95.5 94.9 93.4
100 95.6 95.6 94.9 93.8 95.6 95.5 95.4 94.2
150 96.2 96.2 96.0 95.0 96.2 96.2 96.0 95.2
225 96.4 96.2 96.0 95.5 96.2 96.3 96.3 95.6
2.2 COMPONENTS
UPS module shall be comprised of the followin g:
2.2.1 Converter Section:
AC input, converter input contactor, input harmonic f ilter, and converter utilizing:
2.2.1.1 IGBT Converter
A. General
The Converter shall convert the inco ming 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 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 typically not introduce more than 3% reflected 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 5% 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 o f 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 20 seconds. This function is included as
standard in the converter control circuitry.
D. Input Overcurrent Protection