BOXER SERIES 80-120 KVA
OPERATION
AG-SD-37/ Publication Date: 19.10.2012/Rev. No:1/Rev. Date:16.11.2012
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4 OPERATION
4.1 Operation Procedure
You can find information about circuit breaker, first start-up, types of UPS operation tests,
turning UPS off, EPO and RS232 serial communication system in this section.
4.1.1 Circuit Breakers
The UPS has four circuit breakers accessible from the front side. These are used for the AC input,
maintenance bypass, output and the battery connections respectively.
Three-phase AC voltage is applied through
CB1
to input of UPS.
AC input voltage will be applied directly to loads through
CB2
. In this way, maintenance
purposed switching is done properly.
WARNING: If the CB3 switch is in the off circuit (ON) position and the UPS is
running in online mode, the UPS must be switched to the static bypass mode before
the CB2 switch is turned to the closed circuit (ON) position.
CB3
is used to connect or separate AC voltage that come from static switches to the loads on
UPS.
External batteries are connected to UPS through
CB4.
Active Breakers Operation Mode
Explanation
CB1, CB3, CB4
Normal Mode
UPS operates in normal mode.
CB1, CB3, CB4
Static Bypass Mode
UPS is overload, loads will be transferred to
static bypass line temporarily.
CB2
Test Mode
UPS is open but loads are supplied through
mechanic bypass.
CB2
Maintenance Mode
UPS is shut down for maintenance; maintenance
is supplied through mechanic bypass.
