Emerson Liebert NX 50 and 60 Hz - Manual (Page 131)

Technical Specifications
119
Table 39 Bypass input
Rated Power, kVA
Unit of
Measurement 30 40 60 80 100 120 140 160 200
Rated AC Voltage
1
V (ac)
380/400/415 V
three-phase four-wire, sharing neutral with the rectifier input and
providing neutral reference to the output
Rated current
380V A 45 61 91 121 151 182 212 242 303
400V 43 58 87 116 145 174 202 230 288
415V 42 56 83 111 139 167 194 222 278
Overload capacity %
135% long term
170% 10 min
1000% 100 ms
125% long term
150% 10 min
1000% 100 ms
Upstream protection, bypass
line (by others) Thermomagnetic circuit-breaker, rated up to 125% of nominal output
current. IEC 60947-2 curve C.
Current rating of neutral cable A 1.7 In 1.52In 1.35In
Frequency 2 Hz 50 / 60
Transfer time (between
Bypass and Inverter)
ms
Synchronous transfer: ≤ 1ms
Asynchronous transfer (default): 15 ms (50 Hz), 13.3 ms (60 Hz)
or 40, 60, 80, 100 ms selectable
Bypass voltage tolerance % V (ac)
Upper limit: +10, +15 or +20, default +15
Lower limit –10, -20, -30 or -40, default: -20
(delay time to accept steady bypass voltage: 10 sec)
Bypass frequency tolerance % ± 2.5, ±5, ±10 or ±20 default ±10
Synchronisation - Window Hz Rated frequency ±2 Hz (selectable ± 0.5 to ± 3Hz)
1. Factory set to 400V – 380 or 415V selectable by commissioning engineer.
2. Factory set to 50Hz; 60 Hz selectable by commissioning engineer. Bypass condition ignored when UPS set as frequency converter.