Figure 65: Logic Scheme Of The Busbar Earthing Truck Interlock; Figure 66: Logic Scheme Of The Busbar Earthing Switch Interlock - ABB UniGear Digital Commissioning And Testing Manual

AP PAR ATU S CO NTR O L T E S TI NG
The Busbar earthing switch / truck blocking logic operates bi-directionally and therefore re-
quire two tests:
– Busbar earthing switch / truck interlock
– Circuit breaker trucks interlock
Busbar earthing switch / truck interlock

Figure 65: Logic scheme of the busbar earthing truck interlock

Figure 66: Logic scheme of the busbar earthing switch interlock

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I NT ER LO C K S BE T W EE N PA NE LS
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