Emerson 7400 - Manual (Page 42)

33
Series 7400 Single Phase 1+N UPS
Usually the ‘box’ is fitted as close as possible to the batteries.
Figure 19 shows the details of the power and control cable
connections between the circuit breaker box and UPS itself. These
are similar to the connections made to the battery cabinet,
previously described.
As a safety precaution, remove the battery fuse in the UPS before
making the battery circuit breaker power connections.
Note: The polarity of the battery connections in the 25 - 40 kVA UPS cabinets
are reversed for 50 - 125kVA UPS modules.
Figure 20: Battery C/B box connections for a typical 105 kVA 230V 1 PH UPS
B A T T E R Y C A B I N E T
U P S C A B I N E T
Battery CB
Interface Bd
(100202120003)
1 2 3 4 5
Battery CB
Interface Bd
(100202120003)
1 2 3 4 5
+ ve
- ve
U2 N2
I4 I3 I2 I1
U3 N3 N1 U1 V1 W1