Specifications
U-ENS00011_99AtypSMSSpec_Rev2.doc
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Copyright © 2008, Mitsubishi Electric Power Products, Inc.
U-ENS00011 Rev2 12/9/08
2. 0.99 typical at 50% load.
G. Reflected input current total harmonic distortion (THD):
1. 3% typical at 100% load.
2. 5% typical at 50% load.
2.1.4 Bypass Input
A. Nominal input voltage: 480V.
B. Number of phase: 3 phase, 3 wire.
C. Synchronization voltage range: ±10% of nominal.
D. Frequency tracking range: 60Hz ±5% Maximum.
(Bypass synchronous range shall be selectable from 1% to 5% in 0.1% increments)
2.1.5 AC Output
A. Nominal output voltage: 480V.
B. Number of phase: 3 phase, 3 wire, plus ground.
C. Nominal dynamic Voltage regulation:
1. s1% for balanced load.
2. ±2% for unbalanced load.
D. Voltage balance: 1%
E. Manually adjustable output voltage: ±5% range.
F. V oltage transient response:
1. 100% step load: ±2%.
2. Loss or return of AC input: ±1%.
3. Retransfer from bypass to inverter: ±3%
(V oltage transient response shall not exceed the above and shall recover to within
nominal voltage regulation tolerance within 20 msec.)
G. Frequency (inverter synchronous): 60 Hz (tracks frequency of static bypass source).
H. Free running output frequency (asynchronous): 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% maximu m at 100% linear load.
2. 5% maximu m at 100% non-linear load.
(Load power factor range of 0.9 laggin g to 1.0 within kW rating of UPS. Crest factor 2.3)
K. V oltage phase angle displacement:
1. ±1 degree for 100% balanced load.
2. ±3 degree for 100% unbalanced load.
L. Overload capability:
1. 105% to 125% for 2 minute(s) (Volt age regulation maintained).
2. 126% to 150% for 1 minute(s) (Volt age regulation maintained).
M. Fault clearing: Typically 1000% for 1 cycle (utilizing b ypass source).
2.1.6 DC Input and Battery
1. Voltage: 480V DC nominal, 400V DC minimum.
2. 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. The battery system shall be capable of operating in an average a mbient
temperature of 25°C, with excursions of 16°C to 32°C and shall be sized as