Delta Modulon DPH series User Manual page 9

For configurations of the non-Delta external maintenance bypass
cabinet, please refer to the following.
a. Selection of three or four breakers (switches):
Non-Delta
External
Maintenance
Bypass
Cabinet
(User-supplied,
handled and
b. Each breaker (switch) mentioned above must be a 3-pole (R/ S/
configured by
Delta service
c. It is suggested that each breaker (switch) should be configured
personnel)
d. Install the non-Delta external maintenance bypass cabinet next
If there are switches but not breakers installed in the external
maintenance bypass cabinet, please install (1) an additional protective device
between the input power and the external maintenance bypass cabinet and (2)
an additional protective device between the connected critical loads and the
external maintenance bypass cabinet. The protective device could be a breaker
or a fuse. For the protective device's rating current, please refer to the table
below.
200kVA
400A
In this user manual, the meaning of Q0, Q1, Q2, Q3, Q4 and Q5 represents the following.
Code
Q0 UPS's Bypass Switch
Delta or non-Delta External Maintenance Bypass Cabinet's Input Breaker
Q1
or Switch
Delta or non-Delta External Maintenance Bypass Cabinet's Bypass Breaker
Q2
or Switch
Delta or non-Delta External Maintenance Bypass Cabinet's Manual Bypass
Q3
Breaker or Switch
Delta or non-Delta External Maintenance Bypass Cabinet's Output Breaker
Q4
or Switch
Q5 External Battery Cabinet's Breaker
(1) Three breakers (switches):
An input breaker (switch), a manual bypass breaker (switch)
and an output breaker (switch) should be installed.
(2) Four breakers (switches):
An input breaker (switch), a bypass breaker (switch), a
manual bypass breaker (switch) and an output breaker
(switch) should be installed.
T) device and meets the specifications defined in Table 5-3.
with an auxiliary contactor. For relevant information, please refer
to 4.1.4 External Switch/ Breaker Status Dry Contacts.
to the UPS or align it with the UPS for convenient operation.
300kVA
600A
1-3
1 Important Safety Instructions
400kVA
800A
Meaning
500kVA
1000A