Sel 411L - Table 12.2 Circuit Breaker State Representations; Table 12.3 Disconnect Switch State Representations

P.12.15
Date Code 20151029 Protection Manual SEL-411L Relay
Bay Control
Bay Control Front-Panel Operations
Table 12.3 describes how the one-line diagram represents the different states
of the disconnect switches, and how highlighting the disconnect switch affects
the display of the symbol. Unlike the fast operation time of the circuit breaker,
the disconnect switch operation-in-progress time is longer than the breaker
operation time. Table 12.3 describes how apparatus appear in the one-line
diagram when a disconnect operation is in progress.
Table 12.2 Circuit Breaker State Representations
Apparatus Position Symbol
Asserted Relay
Word Bit
a
a
m = 1, 2, or 3.
Circuit breaker open, not highlighted NOT 52mCLSM
Circuit breaker open, highlighted
b
b
When the circuit breaker is highlighted, the two symbols shown alternate in the display.
NOT 52mCLSM
Circuit breaker closed, not highlighted 52mCLSM
Circuit breaker closed, highlighted
b
52mCLSM
Table 12.3 Disconnect Switch State Representations (Sheet 1 of 2)
Apparatus Position Symbol
Asserted
Relay Word Bit
Disconnect open, not highlighted 89OPNm
Disconnect closed, not highlighted 89CLm
Disconnect open, highlighted
a
89OPNk
Disconnect closed, highlighted
a
89CLm