Table 37 Inverter Output To Critical Load - Emerson Liebert NX 400V User Manual

Table 38 Inverter output to critical load
Rated Power
(load pf 0.8 lag)
(load pf unity)
(load pf 0.9 lead)
1
Rated AC Voltage
2
Frequency
Overload
Fault Current
Non linear load capability
Neutral current capability
Steady state voltage stability 5
Transient voltage response
Total Harmonic Voltage Distortion
4
(THDV)
Synchronisation - Window
- Slew Rate (Max change rate of
synch frequency)
Inverter Voltage Tolerance
1. Factory set to 400V – 380 or 415V selectable by commissioning engineer.
2. Factory set to 50Hz; 60 Hz selectable by commissioning engineer. Frequency converter operation also selectable.
3. EN 50091-3 (1.4.50).
4. Crest factor > 3:1 limited by IEC 62040-3 definition of non linear load.
5. EN 50091-3 (4.3.4).
6. EN 50091-3 (4.3.7) also for 0-100-0% load transient. Transient recovery time: return to within 5% of steady state output voltage within
half a cycle.
kVA 30
kW 24
kVA 24
V (ac)
(three-phase, four-wire with neutral referenced to the bypass neutral)
Hz
% rated
% rated
4
% rated
% rated
%
6
%
%
Hz
Hz/sec
%V
(AC)
40 60 80
32 48 64
32 48 64
380/400 / 415 V
110% for 60 min
125% for 10 min
150% for 1 min
225% for 200 msec
320% current limitation for 200 msec
170%
± 1 (balanced load),
± 2 (100% unbalanced load),
< 1 (linear load)
<3.5 (non linear load, 380V)
<4.0 (non linear load, 400V
< 4.5 (non linear load, 415V)
Rated frequency ± 2 Hz (selectable ± 0.5 to ± 3Hz)
selectable 0.1 to 3Hz/s (single UPS), 0.2Hz/sec (paralleled.UPS)
118
Technical Specifications
100 120 140
80 96 112
80 96 112
50 / 60
100%
152%
± 5
1 Hz/sec
± 5
160 200
128 160
128 160
135%