Liebert APM 150 User Manual page 31

20 Chapter 3 Electrical Installation
3. Connect the input PE cable to the input PE terminal. Note: The PE cable connection must be in accordance
with local and national codes of practice.
4. Connect the AC input cables to the input terminals (U-V-W-N) of the UPS and tighten the connections to
13Nm (M8 bolt). Ensure correct phase rotation.
5. Connect the battery cables between the battery terminals of the UPS and the BCB. Ensure correct battery
cable polarities.
Warning: hazardous battery terminal voltage 400Vdc
Ensure correct polarities of the connections from the terminals of the battery string to the BCB and from the BCB to the
battery terminals of the UPS, that is, positive to positive and negative to negative. Disconnect one or more battery cell
links between battery tiers. Do not reconnect these links or close the BCB without permission of the commissioning
engineer.
6. Connect the output cables.
a) If output distribution modules are configured, connect the L cables, N cables and PE cables between the
output terminals of the output distribution modules and the load according to Figure 3-3. Tighten the bolts
(M6) to 5Nm. Ensure correct phase rotation.
Liebert APM 150 Integrated UPS Single Module And Parallel System
A
A
Figure 3-2 Input terminals, battery terminals and PE terminals (back view)
Battery terminal Input terminal
Battery terminal Input terminal
+ N - U V
A amplified view
A Amplified view
Input PE terminal
Input PE terminal
W
N
Output PE terminal
Output PE terminal
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