47
Chapter 6 Installation and Wiring
y
Non-Delta External Battery Cabinet Connection
A non-Delta external battery cabinet shall include 40 batteries connected in string and you
should connect the cabinet’s neutral to the middle 20
th
and 21
st
batteries. You should use
three cables to connect a non-Delta external battery cabinet with the ‘+’, ‘-’ and ‘N’ termi-
nals marked on the UPS.
When connecting a non-Delta external battery cabinet with the UPS, you must install an
appropriate 4-pole non-fuse DC breaker and fast-acting fuses. Do not use an AC breaker.
The closer the breaker and the fuses are to the batteries, the better. Please refer to the
>
(Figure 6-23: Non-Delta External Battery Cabinet Connection)
External Battery Cabinet
(
+
)
External Battery Cabinet
(
-
)
External Battery Cabinet
(N)
External
Battery
Cabinet
1
2
20
21
22
40
+ -
+ -
+ -
+ -
+ -
+ -
4-pole Non-fuse
DC Breaker
Fast-acting
Fuses
y
The parallel UPSs can connect with common batteries.
WARNING:
A battery can present a risk of electric shock and high short-circuit current. Servic-
%+
service personnel knowledgeable in batteries, battery cabinets and the required pre-
cautions. Keep unauthorized personnel away from batteries and battery cabinets.
Summary of Contents for Ultron GES203HH33A035
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