Interlock Application Scheme # 25

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Interlock Application - Interrupter Switch

Scheme # 25
To prevent opening fuse compartment door when the interrupter switch A is closed. To prevent closing interrupter switch until fuse compartment door is locked closed.

Interlock Application Scheme # 25 - Interrupter Switch

Fuse compartment door and interrupter are shown in closed position. Key A-1 is held in interrupter interlock.

1.
2.

3.

4.

Open interrupter.
Turn key A-1 in L-O interlock on interrupter switch to lock open. Key A-1 is now free.
Insert key A-1 in L-C interlock on fuse compartment door and turn to unlock. Key A-1 is now held.
Open fuse compartment door.

Reverse sequence to restore service.

Links for more interlock application scheme information:

Contents | Introduction | Symbols Legend | Scheme Book

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Scheme # 10A
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Scheme # 25
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