Environmental Specifications

Operating Temperature	0 to 50˚C without derating. However, operating
	at or near 50˚C will adversely affect battery life
	(refer to your battery specifications for more
	information). The recommended operating
	temperature is 25˚C.

Operating Altitude	Maximum 1500m (5000 ft) at 50_C without
	derating

Storage Temperature	---20 to +70˚C (prolonged storage above 40˚C
	will cause rapid battery self-discharge)

Relative Humidity (operating and	95% maximum noncondensing
storage)

Acoustical Noise	75 dBA at a 1m distance

EMI Supression	Meets FCC Part 15 for class A devices

Electrostatic Discharge (ESD)	Meets IEC 801---2 specifications. Withstands up
Immunity	to 25 kV without damage and with no
	disturbance or adverse effect to the critical load.

Battery Specifications

These specifications are for batteries supplied by the customer. Refer to Battery Data section for more information.

Nominal Battery String	120 VDC (60 cells)
Voltage

Float Charging	2.25 VDC per cell
	(135 VDC based on 60 cells)

Initialize Charge	150 VDC, when inverter DC link set to 572 VAC

Battery Charge Current	Limited to 35% of full plus 6 Kw, regardless of actual load
Limit	on inverter

Powerware BPIII Harsh Environment UPS 50--75 kVA Installation and Operation

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