1.7.6 Specifications
MODEL NUMBER PSA4-500MT120 PSA4-700MT120
Capacity (VA / W) 500 / 300 700 / 420
Unit Dimensions, in. (mm) W x D x H 3.43 x 10.2 x 10.6 (87 x 260 x 270)
Unit Weight, lbs (kg) 12.6 (5.7) 15.9 (7.2)
Shipping Dimensions,
in. (mm) W x D x H
6.9 x 14.5 x 15.2 (175 x 369 x 385)
Shipping Weight, lbs (kg) 17.6 (8.0) 19.8 (9.0)
Input AC
Nominal Voltage 120 VAC
Voltage Range 90-150 VAC
Frequency Range 50 or 60 Hz, ±5Hz, auto-sensing
Protection Resettable Circuit Breaker
Surge Energy Rating 320 Joules
Input Cord 6 ft. attached with NEMA 5-15P
Output AC (On Utility)
Nominal Voltage 120 VAC
Voltage Range 101-133 VAC
Frequency Range 50 or 60 Hz, ±5Hz, auto-sensing
Efficiency >90% at full load
Output AC (On Battery)
Nominal Voltage 120 VAC
Voltage Range Nominal ±6%
Frequency Range 50 or 60 Hz, ±1%
Waveform PWM Simulated Sine wave
Transfer Time 6 ms, typical
Overload Capacity
110% for 10 seconds,
120% immediate shutdown
Protection Electronic (over current, short circuit w/ latching shutdown)
Backup Time (Full Load / Half Load), min 2 / 8 2 / 7
Battery Type Valve Regulated Lead Acid (VRLA)
Battery Manufacturer / Model
CSB / HR1221W
Leoch / DJW12-5.0
CSB / GP1272
Leoch / DJW12-7.0
Battery Quantity x VDC x Ah 1 x 12V x 5.0Ah 1 x 12V x 7.0Ah
Battery Backed Outlets (4) NEMA 5-15R
Surge Only Outlets (4) NEMA 5-15R
Table 1.1 System Specifications
Vertiv | Liebert® PSA4™ Installer/User Guide | 12
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