System Output, Maximum Output Capability

System Output

Rectifier/Charger Capacity	135% + 6 Kw

DC Filtering	Ripple voltage less than 0.5% peak to peak

UPS Output Capacity	100% current at 0.8 power factor

Output Voltage Regulation	1% (10% to 100% load)

Output Voltage Adjustment	480 VAC nominal, adjustable from 452 VAC
	to 508 VAC (60 Hz only)

Output Voltage Harmonic Content	2% max THD, 2% max single (for linear load)

Output Voltage Balance	2% for 100% maximum load imbalance

Output Voltage Phase	2˚ for 100% maximum load imbalance
Displacement

Output Transients	5% for 100% load step or removal

Frequency Regulation	0.005 Hz free running

Synchronous to Bypass	Bypass within voltage limits of +5%, ---8% of
	output setting; bypass within 0.5 Hz

Frequency Slew Rate	1 Hz per second maximum

Overload Capability	Up to 125% for 15 minutes
	Above125% for 30 seconds
	1000% for 10 cycles with bypass

Maximum Output Capability	300% peak for 10 cycles without bypass

122	Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation