GUID-A73E4627-E4BB-4ED9-9122-B1C6F0BBC006 V1 EN
Figure 5: Pushing the plug-in unit into the case
A
7 mm
3. Turn down the handle to push the plug-in unit into its final position in the case.
The handle must be locked or sealed to secure the mechanical
performance under any conditions caused by vibration,
pressure, shock or bump, seismic activity or other equivalent
circumstances.
4.2.3 Sealing plug-in unit
The front panel of the protection relay has an integrated sealing screw. By default the
screw is screwed all the way in and is not used when installing or detaching the plug-
in unit.
1. Open the sealing screw about nine turns.
2. Thread a sealing wire through the holes in the sealing screw and the handle.
1MRS757641 E Section 4
Mounting
620 series 15
Installation Manual
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