Delta Modulon DPH Series User Manual page 108

Please note that only authorized Delta engineers or service personnel can perform wir-
ing or you can perform wiring only under the supervision of authorized Delta engineers or
service personnel. To connect the external battery cabinet(s) to the UPS, please refer to:
For the external battery cabinet's grounding information, please refer to:
When choosing the external battery cabinet's protective device, please take the follow-
ing factors into consideration: (1) over current between the UPS and battery circuit, (2)
short circuit current of the batteries, (3) wire/ cable materials, and (4) local electrical
regulations. If you have any questions about the external battery cabinet's protective de-
vice, please contact Delta service personnel.
The protective device is optional, and its type must be fast-acting DC circuit breaker
and/ or fast-acting DC fuse. If you want to buy any of them, please contact Delta service
personnel. When choosing the protective device, please follow the instructions below.
(1) The protective device's rated current must comply with the current values shown in
current of the fast-acting DC circuit breaker or/ and the melting current of the fast-
acting DC fuse) must be 4~6 times the values shown in
response time of the protective device must be less than 20ms.
(3) For the choice of the fast-acting DC fuse mentioned above, the A50QS series from
the supplier
for relevant information.
Modulon DPH Series
.
is suggested. Please contact Delta customer service
5-32
. Besides, the