Vertiv Liebert EXM2 - Maximum Steady State AC and DC Currents; Recommended CSA of UPS Cable

4.1.2 Maximum Steady State AC and DC Currents
The power cable must be selected according to the current and voltage values in Table 4.1 below as well as the local wiring
regulations, and take environmental conditions (temperature and physical media) into consideration, then refer to Table 3B in
IEC 60950-1.
UPS
po wer
(kV A)
Ra ted current (A ) Bu s stu d bolt/nut specification
M ax. input
current
1
O utput/by pass
current
2
at full lo ad
Ba ttery
discharg e
3
current (+ , -)
at m in.
ba ttery
voltage
Input/ba ttery/o utput/
by pass/PE cable
Re com m e nded
torq ue (N m .)
380V 40 0V 415 V
100kVA 197 152 145 139 361 M12 39±10%
120kVA 237 182 174 167 435 M12 39±10%
160kVA 315 242 232 222 578 M12 39±10%
200kVA 397 303 290 278 722 M12 39±10%
250kVA 492 380 363 348 903 M12 39±10%
Table 4 .1 Installation Tools
N O T E: 1) M ax. input current is calculated according to the low voltage inp ut of 176V and 100% load
percentage.
N O T E: 2) M ax. output/b ypass current is calcu lated according to the rated vo ltage and 100% load
percentage.
N O T E: 3) The battery discharg e current at the low est battery voltage is calculated according to the
battery cell num b er of 30 and lowest EOD voltage o f 1.6V .
4.1.3 Recommended CSA of UPS Cable
The recommended CSA of the UPS cable is listed in Table 4.2 below.
M od e Input O utput By pass N eutral line Ea rth ca ble B attery
100kVA 70 50 50 70 35
See Table 7.4 on
page135
120kVA 95 70 70 95 50
See Table 7.4 on
page135
160kVA 2*50 95 95 2*50 50
See Table 7.4 on
page135
200kVA 2*70 2*50 2*50 2*70 70
See Table 7.4 on
page135
250kVA 2*95 2*70 2*70 2*95 95
See Table 7.4 on
page135
Table 4 .2 Recom m ended C SA of the U P S cable (unit: m m
2
, am b ient tem p erature: 25°C )
4 Electrical Installation
36
Vertiv™ Liebert® EXM2 UPS User Manual