120 Specificationsand Ratings
5.5 Electrical Specifications
RECTIFIER INPUT
Input Voltage: Standardvoltages—208 VAC, 480 VAC, 600 VAC.Other voltages available on
request.3-phase, 3-wire plus ground.
Voltage Range: +10%,-15% (nobattery discharge at -20%).
Frequency Range: 57Hz to 63 Hz.
Subcycle Magnetization Inrush: Less than 3 times normal full load input current for UPS modelswi thout
optionalinput isolation transformer. Less than 8 times normal fullload input
currentfor T-UPS models with optional input isolation transformeror 12-pulse
rectifier.
Input Current Walk-In: From20% to 100% in 15 seconds.
Current Limit: Maximum of 125% normal full load input current.
Current Distortion Less than 30% THD typicalat normal full load input current. Less than 7%
reflectedTHD typical at normal full load input current with optional inputfilter.
500kVA to 750 kVA models with optional 12-pulse rectifier: Less than 9% THD
typicalat normal full load input current. Less than 4% reflected THD typical at
normalfull load input current with optional input filter.
Power Factor 0.85minimum lagging at full load.
0.92minimum lagging at full load with optional input filter.
BYPASS INPUT
Input Voltage: Standardvoltages—208Y/120 VAC, 480Y/277 VAC, 600Y/346 VAC. Other
voltagesavailable on request. 3-phase, 4-wire plus ground or 3-phase,3-wire
plusground.
Optionalvoltages—208 VAC, 480 VAC, 600 VAC. Other optional voltages
availableon request. 3-phase, 3-wire plus ground (ungrounded or corner
groundeddelta).
Voltage Range: ±5%for manually initiated bypass transfer
±10%for automatically initiated uninterrupted transfer.
Frequency Range: 59.5Hz to 60.5 Hz.
Voltage Transient: ±4%for manually initiated bypass transfer.
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