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6 Commissioning
Maschinenfabrik Reinhausen GmbH 2020
41
1800138/08 EN
TAPMOTION
®
ED
Figure 20: S3 control switch
2. Open motor-drive unit door and switch off motor protective switch Q1 (po-
sition O).
3. Using the hand crank, operate the motor-drive to move it to its last operat-
ing position. If the last operating position isn't reached, check coupling be-
tween on-load tap-changer/de-energized tap-changer and motor-drive
unit.
4. Continue turning the motor-drive unit in the same direction with the hand
crank until the motor-drive unit is mechanically blocked.
5. Turn back motor-drive unit with hand crank to mid-position of tap-change
indicator.
6. Remove the hand crank.
7. Switch on motor protective switch Q1 (position I).
8. Check that the motor-drive unit no longer starts up when the S3 switch is
turned further in the same operating direction as under item 1.
9. Perform check for both end positions.
Checking tripping of motor protective switch
Proceed as follows to check tripping of the motor protective switch:
ü
The motor protective switch Q1 is switched on (position I).
1. Close X1:14 - X1:15 Q1 OFF connection to trip the motor protective
switch.
ð
The motor protective switch is tripped (position O). If the motor protec-
tive switch is not tripped, contact Maschinenfabrik Reinhausen GmbH.
2. Switch on motor protective switch again (position I).
ð
The tripping of the motor protective switch is checked.
6.2.3