BOXER SERIES 80-120 KVA
PRODUCT DESCRIPTION
AG-SD-37/ Publication Date: 19.10.2012/Rev. No:1/Rev. Date:16.11.2012
10
2.1 General Information
General operation topology of Boxer Series devices can be recognized as follows:
The UPS is connected to the mains voltage through the CB1 breaker. After this energy has filled
DC bus condensers, the rectifier operates. The rectifier converts the AC mains energy to DC
voltage and charges the batteries in a controlled manner. When there are no mains, sufficient
level DC bus voltage is created, using battery voltage. DC bus voltage is converted to mains
synchronized AC voltage by the inverter. This is a high quality voltage. Generated AC power is
applied to the loads through the static semi-conductor transfer switches and output (load)
circuit breakers.
When maintenance or repair are needed, before input (CB1) and output (CB3) circuit breakers
are switched to open circuit (OFF), switch the UPS from normal mode to static bypass mode(see
4.1.3.2). Afterwards, the maintenance circuit breaker (CB2) is switched to closed circuit (ON).
After that, output (CB3) and input (CB1) circuit breakers of the UPS are taken to the off position
respectively.