CHALLENGER SERIES 80‐120 KVA
PRODUCT DESCRIPTION
AG‐SD‐36 Rev. No:0 Rev. Date:15.11.2012 Publish No:1
2.1.
General
Information
General operation topology of Challenger Series UPS can be recognized as follows.
The UPS is connected to the mains voltage through the CB1 breaker. As DC bus is ramped up, the
rectifier starts to operate and converts the AC mains to DC Voltage. When the mains voltage is not
available, the DC/DC booster pumps the battery voltage to the necessary level. DC DC bus voltage
is then converted to mains synchronized AC voltage by the inverter. This is a high quality voltage.
Generated AC power is applied the loads after passed from static semi‐conductor switches and
output (load) breakers.
2.1.1.
Static
Transfer
Switch
Some blocks are named as “static switches” as can be seen above. These blocks consist of inverse
parallel connected thyristors. These switches, which are under the control of the mainboard
control unit (DSP), provides controlling of supplying the loads through either mains or inverters.
The loads are supplied through inverter during the normal operating mode. Therefore, Inverter
static switches are active if there is no problem with the system.
User can switch the UPS between mains and inverter by using front panel. While the loads are fed
directly by mains with the order of user, in case of either power off or mains values out of
tolerances, the UPS will start to supply the loads through battery mode.
If the user wants, can provide mains to feed load continuously by switching on the maintenance
bypass without making adjustment on the front panel. Later on, the user can make the input and
output switch fuses short circuit.
If user wants, can provide mains to feed load continuously by switching on the maintenance
bypass without making adjustment on the front panel. Later on, the user can make the input and
output switch fuses short circuit.