CHALLENGER SERIES 80‐120 KVA
OPERATION
AG‐SD‐36 Rev. No:0 Rev. Date:15.11.2012 Publish No:1
4
OPERATION
4.1
Operation
Procedure
You can find informations 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
UPS has three circuit breakers that can be reached from the front panel, these are used for AC input,
maintenance bypass and output connections respectively.
Three‐phase AC voltage is applied through
CB1
to input of UPS.
AC input voltage is applied directly to loads through
CB2
. In this way, maintenance purposed
switching is done properly. If UPS is actived while it is operating thanks to auxilary short circuit info
located in CB3, mains makes the bypass static switches actived. The system will be switched to
maintenance mode smoothly.
CB3
is used to connect or seperate AC voltage that comes from static switches to the loads on UPS
.
Active
Brakers
Operation
Mode
Explanation
CB1, CB3
Normal Mode
UPS operates in normal mode.
.
CB1, CB3
Static Bypass Mode
UPS is overloaded, loads will be transferred to
static bypass line temporarily.
CB2
Test Mode
UPS is ON, but loads will be fed through
mechanical bypass line.
CB2
Maintenance Mode
UPS is shut down for maintanence, loads will be
fed through mechanical bypass line.