Installation Manual Liebert Hipulse E Chapter 2 - Installation Procedure
Single or '1+N' UPS System Installation (Electrical)
(07/04) Page 2-5
Output System Connections
6. Connect the system output cables between the UPS output busbars (U2-V2-W2 N2 terminals)
and the critical load and tighten the connections to 45 Nm (M12 Bolt).
ENSURE CORRECT PHASE ROTATION.
WARNING
If the load equipment will not be ready to accept power on the arrival of the commissioning engineer then ensure that
the system output cables are safely isolated at their ends.
UPS Battery Connections
7. Connect the battery cables between the UPS terminals (+\-) and its associated battery circuit breaker (as
shown in Chapter 6).
Note: When connecting the cables between the battery extremities to the circuit breaker always connect the
circuit breaker end of the cable first.
The auxiliary cables of the battery must be screened and double insulated. Connect screened auxiliary cables
from each battery circuit breaker controller board (P/N 4520079F) to the UPS auxiliary terminal block
(X3) (as shown in Chapter 6) of their metal frame of the Battery circuit breaker box (if used), not of UPS.
OBSERVE THE BATTERY CABLE POLARITY.
WARNING
Do not close the Battery circuit breaker before the equipment has been commissioned
Auxiliary Connections
8. Connect the auxiliary cables of any external interface/signals to the respective connections of the output
auxiliary terminal block (X4) (see Chapter 6).
9. Refit the lower metal protective cover and the handles on the UPS power isolators.
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