1. Option 1: A DC circuit breaker or DC isolated switch connected in series with a
DC fuse (for safety reasons, this option is suggested)
+
N
-
External
Battery
Cabinet
(Figure 5-21: Installation of a 4-Pole DC Circuit Breaker or DC Isolated Switch Connected in Series with a DC
+
N
-
External
Battery
Cabinet
(Figure 5-22: Installation of a 3-Pole DC Circuit Breaker or DC Isolated Switch Connected in Series with a DC
DC Fuse
4-Pole DC Circuit Breaker
or DC Isolated Switch
3-Pole DC Circuit Breaker
DC Fuse
or DC Isolated Switch
+
N
-
Fuse)
+
N
-
Fuse)
5-29
5
Installation and Wiring
Delta
External
Maintenance
UPS
Bypass
Cabinet
(Optional)
Delta
External
Maintenance
UPS
Bypass
Cabinet
(Optional)
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