TEBEVERT III INVERTER SYSTEM (120 VDC)
07.11.2011 48 028-0009-006
Position 0: UPS operation
Position 1: Load on Reserve Input
Position 2: Load on Inverter Output
Prior to operating the manual maintenance by-pass switch verify the SBS
is operating in one of the following modes. Failure to do so could result in
an interruption in power to the connected load equipment:
1) The SBS is operating correctly
This is signalled on the front panel of the SBS by:
LED "off" LED "on"
In this operating state, the manual by-pass switch can be switched either
into position 1 (Load on By-pass Input) or position 2 (Load on Inverter
Output). After the servicing work is complete and if the system is in proper
working order, the manual by-pass switch can be turned back to position 0
(UPS operation).
2) The SBS shows a fault
This is signalled on the front panel of the SBS by:
LED "on" LED "off"
In this operating state, two further cases must be differentiated.
a) The inverter system is operating in the inverter operation mode.
This is the case when the LED on the front panel of the
SBS is lit.
In this case only switch position 2 (Load on Inverter Output) is
permissible!
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