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Chapter 3 Electrical Installation 17
APM 300 Integrated UPS Single Module And Parallel System User Manual
Chapter 3 Electrical Installation
This chapter introduces the electrical installation of the UPS, including the procedures or methods for power
cabling and control cabling, the distance from floor to connection point, and the connection of cabinets.
The UPS requires both power cabling and control cabling once it has been mechanically installed. All control
cables, whether shielded or not, should be run separately from the power cables.
Warning: professional installation
1. Do not power on the UPS before the arrival of authorized service engineer.
2. The UPS cables must be routed by an authorized engineer in accordance with the information contained in this
chapter.
3.1 Power Cables
3.1.1 System Configuration
The cable size of the system power cable shall meet the following requirements:
UPS input cables
The size of the UPS input cable differs with the UPS power ratings and input AC voltages, provided that it
meets the requirement of rated input current, including the rated battery charge current, see Table 3-1.
UPS bypass and output cables
The size of the UPS bypass and output cable differs with the UPS power rating and output AC voltages,
provided that it meets the requirement of rated output or bypass current, see Table 3-1.
Battery cables
Each UPS connects to its battery through two cables connecting to the positive pole and negative pole. The
cable size of the battery cable differs with the UPS power ratings, provided that it meets the battery discharge
current requirement when the battery discharges to near EOD voltage, see Table 3-1.
3.1.2 Maximum Steady State AC And DC Currents
Table 3-1 Maximum steady state AC and DC currents
UPS rated
power (kVA)
Rated current (A)
Input mains current 1
，
2
with full battery recharge
Total output current
2
at full load (36 cells)
Battery discharge
current at EOD
380V 400V 415V 380V 400V 415V
300 560 530 510 450 430 410 1050
270 514 477 459 405 387 369 945
240 448 424 408 360 344 328 840
210 392 371 357 315 301 287 735
180 336 318 306 270 258 246 630
150 280 265 255 225 215 205 525
120 224 212 204 180 172 164 420
90 168 159 153 135 129 123 315
60 112 106 102 90 86 82 210
30 56 53 51 45 43 41 105