Gamatronic B60US-IB, Installation Manual

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UPS for 208 Vac Grid, Installation Guide, doc. rel. 3.0 32
A suitably rated fuse must be installed on the rectifier ac input line and bypass input line.
Refer to Figure 9 or Figure 10 for system connections and to Table 2 for circuit breaker
recommendations.
See Chapter ‎ 5 for an overview of circuit breaker selectivity.
Warning: Connection of The UPS to the electrical panel must be
performed only by a licensed electrician experienced with similar
systems.
Warning: If two separate input lines are used for rectifier and bypass
input (as in Figure 9 and Figure 10), the Neutral line must be shared.
following
warning:
WARNING: The recommended cable and breaker sizes are based on
optimal installation conditions. Local code must be followed to coincide
with the site ambient temperatures, wire insulation type, conductor
material, length of cables, method of installation and voltage drop
requirements.
Table 2: Recommended circuit breakers for the current rating for 20-60kva UPS 208
UPS
MODEL
kW
*
MAIN
SWITCH SW1
**
MAIN CB
CB1
(with TRANSFORMER)
RECTIFIER CB
CB2
BYPASS & OUTPUT CB
CB3, CB4, CB5
Use copper
wires only!
18kW 3x63A 3x63A 3x63A 3x56A 4 AWG
36kW 3x133A 3x133A 3x133A 3x112A 2/0 AWG
54kW 3x200A 3x200A 3x200A 3x167A 4/0 AWG
For installation:
(*) Without installation transformer.
(**) With isolation transformer only.