6.41
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Autoreclosing
Manual Closing
If breaker BK1 closes successfully, then:
➤ The unlatch close condition asserts (indicating breaker closure)
➤ Close logic output BK1CL deasserts
If breaker BK1 does not close successfully, then:
➤ The close failure timer times out (Relay Word bit BK1CFT asserts
momentarily)
➤ Close logic output BK1CL deasserts
Note in Figure 6.17 that if breaker BK1 manual close logic is actively operating
(as described in the preceding steps), then breaker BK2 manual close logic can-
not be actively operating. Breaker BK2 manual close logic only has a chance to
operate if breaker BK1 manual close logic is not actively operating and two
breakers are enabled for the scheme (Global setting NUMBK := 2). Thus, manual
closing can only be attempted for one breaker at a time.
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