ABB Relion 620 Series - Sealing Plug-In Unit

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.
1
2
1 Sealing screw 2 Sealing wire and seal
Figure 6: Sealing screw
1MRS757641 G
Mounting
620 series
Installation Manual
23