Delta DPS-400K - Page 66

5-20
Ultron DPS Series
questions about the external battery cabinet’s protective device, please contact Delta
service personnel. Please refer to Figure 5-18 ~ Figure 5-20 for the installation of the
protective device for the external battery cabinet.
1. Option 1: An isolated switch connected in series with a DC fuse
(Figure 5-18: Installation of An Isolated Switch Connected in Series with a DC Fuse)
-
N
+
UPS
-
N
+
External
Battery
Cabinet
DC Fuse Isolated Switch
2. Option 2: A DC circuit breaker
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(Figure 5-19: Installation of a 4-Pole DC Circuit Breaker)
-
N
+
UPS
-
N
+
External
Battery
Cabinet
4-Pole DC Circuit Breaker