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Double check the polarity of battery connection!
Make sure that all circuit breakers are at “OFF” position before starting with the
installation.
5.3.1.5.
Output Connection
Please add double-pole miniature circuit breaker (equivalent to UPS output breaker) to distribution board
where the loads are to be connected. Connect the phase cable to output
“L”
terminal and the neutral cable
to output
“N”
terminal.
To enable the short circuit protection feature of the UPS, each load should be supplied
through a separate circuit breaker chosen according to the load current. This may pro-
vide quick disconnection of the short circuited load and maintain operation continuity
of the other loads.
Each load should be supplied through separate circuit breaker and the cable cross sec-
tion should be chosen according to the load current value.
NEUTRAL SYSTEM:
•
Versions without internal isolation transformer :
Keor S does not modify the neutral system: output neutral system is the same as input
neutral system. Do not connect the output neutral to the protective ground or protec-
tive bounding (PE or PB).
Installation of an external isolation transformer is required when necessary to modify
the neutral system downstream Keor S.
• Versions with internal isolation transformer :
The output neutral system is IT. Do not connect input neutral to output neutral. Ac-
cording to the neutral system required downstream Keor S, you may reference output
neutral to protective ground (PE) following your national electric code.
Make sure that the UPS is not overloaded to provide a higher quality supply to the
loads.
