10 PREVENTIVE AND CORRECTIVE MAINTENANCE
3BHS799208 E01 REV E
ACS5000 WATER-COOLED
USER MANUAL
178/186
For the safety switches to work and to be able to open the doors, auxiliary
power supply is required.
If the auxiliary power supply is unavailable and the doors are closed, you
can only open them by unlocking the safety switch manually.
10.6.5.2 Safety-switch settings
Figure 10-7 Safety switch
Unlocking
1.
To access the release dial (2), remove the screw cap (1) from the door.
2.
Turn out the locking screw (1) until the release dial can be turned.
(1) Release dial
(2) Unlocked position: enables
opening the door of a medium
voltage unit whether the auxiliary
voltage is switched on or off.
(3) Locked position: Normal
operating setting
To open the door of a medium
voltage unit, the DC link must be
discharged and the auxiliary
voltage must be switched on.
1
2
3
1
2
PZ0
1
Summary of Contents for ACS5000
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