Vertiv Liebert EXS 80kVA UPS, User Manual

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Vertiv™ Liebert EXS 80kVA UPS User Manual
3 Electrical Installation
3 Electrical Installation
This chapter mainly introduces the electrical installation of the UPS, including the power cable and signal
cable connecting procedures and methods.
After completing the mechanical installation of the UPS, it is required to connect the power cable and
signal cable of the UPS. All the signal cables, whether shielded or not, shall be kept away from the power
cables.
WARNING! 1. Do not power on the UPS before the arrival of authorized service engineer.
2. The UPS cables should be routed by an authorized engineer in accordance with the
information contained in this chapter.
3.1 Wiring of Power Cable
3.1.1 System Configuration
The cable size of the system power cable shall meet the following requirements:
UPS input cable
The cable size of the UPS input cable differs with the UPS power ratings and input AC voltages, provided
that it meets the requirement of maximum input current, including the maximum battery charge current,
see Table 3-1 .
UPS bypass and output cable
The cable 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 nominal output or bypass current, as shown in Table
3-1 .
Battery cable
Each UPS connects to its battery through the three cables connecting to the positive pole, negative pole
and neutral line. 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, as
shown in Table 3-1 .