Power System; Miscellaneous - ABB UZE Repair Manual

2 Trouble-shooting

2.3.2 Power system

Error condition
The three-phase motor runs
back and forth without the
on-load tap-changer changes
position.
Dangerous voltage!

2.3.3 Miscellaneous

Error condition
Corrosion and/or condensation
in the motor-drive mechanism
cabinet.
Water in the motor-drive
mechanism cabinet.
Oil in the motor-drive mecha-
nism cabinet.
16
Fault finding procedure
Reverse two of the phases of the incoming supply.
WARNING
Fault finding procedure
Check the function of the heater. Refer to Heater in Main-
tenance Guide.
1. Adjust the hinges on the cabinet door.
2. Replace the door gasket on the cabinet.
1. Locate the leakage.
2. Contact ABB.
1ZSE 5492-128 en, Rev. 4