16. Commissioning and De-commissioning
Caution : In case of motor-operated mechanism, test operations may only be carried out using
emergency hand crank (39). Do not use a drill.
16.1 Commissioning of Disconnector
Caution : The diagonal rods (68) are adjusted at the factory for precise engagement of the main
contacts. The adjustment may only be changed by ABB-trained specialist erectors.
Commissioning Agent
1. Carry out a test operation manually, checking that there is satisfactory contact engagement of
the disconnector Chapter 12
2. If necessary, correct contact engagement
16.2 Commissioning of Earthing Switch
Commissioning steps :
1. Carry out a test operation manually, checking that there is symmetrical engagement of contact
fingers (20) on earthing contact (18) Chapter 14
2. If necessary, correct symmetrical engagement by loosening and re-tightening 4 bolts (340) on
T-type clamp (329)
16.3 Commissioning of Operating Mechanism for Disconnector
Commissioning steps :
1. Check operating mechanism according to the service instructions supplied
2. Check dead-center position of operating rods (37) in the ON and OFF position Chapter 12
3. If necessary, correct dead-center position by adjusting operating lever (74) and/or operating rod
(37)
4. Remove bag with desiccative from operating mechanism and start electric heating of operating
mechanism
16.4 Commissioning of Operating Mechanism for Earthing Switch
Commissioning steps :
1. Check operating mechanism according to the service instructions supplied
2. Check dead-center position of operating rods (7) in the ON and OFF position Chapter 14
3. If necessary, correct dead-center position by adjusting operating lever (76) and/or operating rod
(71)
4. Check contact of rear contact fingers against stop (21) of earthing contact (18) Chapter 14
5. Remove bag with desiccative from operating mechanism and start electric heating of operating
mechanism.
Note : The switching time of disconnector and earthing switch should be between 3.5 ... 6 seconds.
However, compliance with a specific switching time is not required for the proper operation of the
equipment.
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