Chapter 3 Electrical Assembly

Battery

UPS input

UPS output

cables

input N

output N

Fig. 3-1 20/30kVA UPS bottom cable output

Battery cables Rectifier input

Bypass input

UPS output

 

Bypass N

Output N

 

 

Fig. 3-2 40/60kVA UPS cable connection at bottom

2. Cable routing

1.Bottom entry configuration – the cables are input and output from the bottom of the UPS

2.Top entry configuration – the cables are input and output from the top of the UPS. To do this, punch out the cable entry cut-outs on the top of the UPS, and feed the cables through the cutouts and guide them through the metal conduit to the bottom of the UPS. From the front view, the battery cable, the input power cables of rectifier and bypass input cables should be input from the left. The output cable and signal cables should be input from the right. The layout of the cables is shown in Figure 2-8.

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Liebert UPS System user manual Cable routing, 20/30kVA UPS bottom cable output