ABB UZE, Руководство по ремонту, Страница: 7 / 28

Contents
1. Introduction _______________________________________________________9
1.1 General _______________________________________________________9
1.2 Repair categories _______________________________________________9
1.3 Serial number __________________________________________________9
1.4 Spare parts list _________________________________________________ 10
1.5 Maintenance guide ______________________________________________ 11
1.6 Tightening torque _______________________________________________ 11
2. Trouble-shooting ___________________________________________________ 12
2.1 On-load tap-changer ____________________________________________ 12
2.2 Pressure relay __________________________________________________ 12
2 Trouble-shooting _____________________________________________ 13
2.3 Motor-drive mechanism __________________________________________ 14
2.3.1 Control system _____________________________________________ 14
2.3.2 Power system ______________________________________________ 16
2.3.3 Miscellaneous ______________________________________________ 16
3. Repairs and adjustments ____________________________________________ 19
3.1 Replacement of gasket between insulating board and selector switch unit 19
3.1.1 General ___________________________________________________ 19
3.1.2 Tools required ______________________________________________ 19
3.1.3 Material and spare parts required ______________________________ 19
3.1.4 Procedure _________________________________________________ 20
3.2 Replacement of gaskets between barrier board of steel and
selector switch unit _________________________________________________ 22
3.2.1 General ___________________________________________________ 22
3.3 Replacement of front cover and top cover gaskets ___________________ 22
3.3.1 General ___________________________________________________ 22
3.3.2 Tools required ______________________________________________ 22
3.3.3 Material and spare parts required ______________________________ 23
3.3.4 Procedure _________________________________________________ 23
3.4 Changing the end stops in motor-drive mechanism __________________ 23
3.4.1 General ___________________________________________________ 23
3.4.2 Tools required ______________________________________________ 23
3.4.3 Material and spare parts required ______________________________ 24
3.4.4 Procedure _________________________________________________ 24
3.5 Replacement of maintaining contact _______________________________ 26
3.5.1 Tools required ______________________________________________ 26
3.5.2 Spare parts required ________________________________________ 26
3.5.3 Procedure _________________________________________________ 26
3.6 Replacement of pressure relay ____________________________________ 26
3.6.1 General ___________________________________________________ 26
3.6.2 Tools required ______________________________________________ 26
3.6.3 Spare parts required ________________________________________ 27
3.6.4 Procedure _________________________________________________ 27