Liebert 130 kVA User Manual page 34

User Manual
Hipulse - Single Phase '1+N' UPS System
3.1.2 Cable rating
UPS 3 Phase Input Mains with full
battery re-charge
Rating
(kVA) (less 5% for 12 pulse)
380V 400V
30 63 60
40 84
50 105 100
60 126 119
80 165 157
120 245 233
130 259 247
150 300 285
3.1.3 General Notes
The following are guidelines only and superseded by local regulations and codes of
practice where applicable:
1. The neutral conductor should be sized same as the output/ bypass current.
2. The earth conductor should be sized for carrying fault current for atleast 3 to 5
seconds or as guided by local electrical rules.
3. Consideration should be given to the use of paralleled smaller cables for heavy
currents, as this can ease installation considerably.
4. When sizing battery cables, a maximum volt drop of 3V d.c. is permissible at the
current ratings given in Table 3-1.
3.1.4 Cable Connections
The rectifier input, bypass, output and battery power cables (all require lug type
terminations) and are connected to busbars situated below the power isolator
switches - as shown in figure 3.1 for 80kVA and fig 3.2 for 120 /160/ 200kVA.
A terminal block X3 is used for connecting the control cables to the battery circuit
breaker and a second terminal block X4 is used for the external emergency stop
facility, external OFF inverter, ext. Bypass, etc. these are female spade type
connections (Fast-on 6.3 x 0.8) and are described later in Section 3.2
3.1.5 Safety earth
The safety earth busbar is located between the Bypass and Output power supply
connections as shown in the figure 3.1. The safety earth cable must be connected to
the earth busbar and bonded to each cabinet in the system.
All cabinets and cable trunking should be earthed in accordance with local
regulations.
NOMINAL CURRENT (Amps)
1 Phase Output at full load
415V 110V 115V
58 272 260
80 77 364 349
96 454 434
115 545 521
151 727 695
223 1090 1043
238 1181 1130
275 1363 1304
Table 3-1 UPS Module cabinet power cable rating
14
Battery at minimum
Battery Voltage
120V 380V 400V
250 83 80
334 110 106
416 137 133
500 164 159
666 219 213
1000 329 319
1083 357 346
1250 412 399
130 kVA - 110V
415V
77.5
103
129
155
206
310
336
387