Siemens SDR 15.5 kV Instruction Manual page 24

Table 2: Troubleshooting
24
Malfunction
Failure of the auxiliary power supply
(for example, "Aux power OK" LED
does not light up).
Ground fault circuit interrupter (GFCI)
duplex outlet does not work.
Heating does not work
Failure of batteries
Closing of the recloser is blocked
Incomplete recloser cycle > only
switching off is possible
Controller does not start up
Remedy
The auxiliary power supply is protected by a miniature circuit breaker
in the front of the swing panel.
1. Check miniature circuit breaker CB1 and switch on if necessary.
2. Check the status of the external auxiliary power supply.
Ground fault circuit interrupter (GFCI) is protected by a miniature
circuit breaker in the front of the swing panel.
1. Check miniature circuit breaker CB1 and switch on if necessary.
2. Check the status of the external auxiliary power supply.
The heaters are protected by a miniature circuit breaker (in the front
of the swing panel).
1. Check miniature circuit breaker CB2 and switch on if necessary.
The batteries are protected by a miniature circuit breaker (in the front
of the swing panel).
1. Check miniature circuit breaker CB3 and switch on if necessary.
2. Check the battery status via the protection and control relay menu
or monitoring device and replace batteries if necessary.
Manual lockout handle is not fully returned to (pushed in) starting
position.
1. Push manual lockout handle back in completely.
Auxiliary power supply may be inadequate or capacitors may be
faulty. In this case, the controller's self-monitoring function can block
the full cycle.
1. Check fault messages from the protection and control relay.
1. Check the auxiliary power supply to confirm it is turned on
(connected and CB1 is switched on). Otherwise, the deep
discharge protection will prevent the controller from starting up.