16 User Manual 10H52192UM60 - Rev. 1 - 09/2011
Liebert NX Installing the UPS Module
System Output Connection
5. Connect the system output cables between the UPS output terminals (U3-V3-W3-N3) and the critical load. See Table 1-1 for the
torque. Ensure correct phase rotation.
Warning
If the load equipment will not be ready to accept power when the commissioning engineer arrives, ensure that the ends of the system
output cables are safely isolated.
Warning: Hazardous battery terminal voltage, 400 Vdc
1. Ensure correct polarity of battery string end connections to the UPS terminals, i.e. (+) to (+), (
–
) to (
–
) and (N) to (N) but do not make
these connections unless authorized by the commissioning engineer.
2. Ensure correct polarity of battery string end connections. Do not reconnect these links unless authorized by the commissioning
engineer.
6. For frequency converter applications, ensure the bypass links are removed.
7. Replace the protective cover.
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