Instruction manual – AP901S Arc Protection Unit
23 (43
)
A1027A
Logic Scheme 11
The AP901S scheme 11 is very similar to scheme 10. S2 is used for monitoring the incoming
feeder breaker compartment. S3 monitors reserve busbar; S4 monitors the main busbar
compartment. The contact T1 is responsible for tripping section circuit breaker. T2 is
responsible for tripping coupler circuit breaker. BI1 and BI2 are responsible for recognizing
the incoming circuit breaker position. BI3 receives overcurrent information from the AP910P
of incoming feeder. BI4, BI5 and BI6 are used for sending light information from different
location of the busbar. BO1, BO2 and BO3 send arc fault information to incoming feeder
units and intermediate units. CBFP feature is applied into this scheme.
Figure 3-11: AP901S logic scheme 11
Summary of Contents for AP901S
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