8-10 BE1-951 Application 9328900990 Rev L
Table 8-5. OC-W-79 Contact Sensing Input Logic
State Labels
Input Purpose Name Label
Energized De-Energized
IN1
51b breaker status (TRUE when breaker is
open). Used for breaker status indication in
Sequence of Events Reports, recloser
control, and breaker monitoring.
BREAKER OPEN CLOSED
IN2
Reclosing Drive to Lockout. Drives recloser
to lockout when de-energized. Can be used
with an external switch to disable the
recloser. If IN2 is not used, it must be
strapped high to enable the recloser.
RCL_DTL NORMAL DTL
IN3
Reclosing initiate used to initiate reclosing
by external protective relays.
RCL_INI INI NORMAL
IN4
When IN4 is energized, Neutral, Negative-
Sequence, 50, and 51 protection are
enabled. IN4 must be tied HIGH if this
feature is not used.
N&Q_ENABLE ENABLED DISABLD
Table 8-6. OC-W-79 Function Block Logic
Function Purpose
BESTlogic
Expression
Mode
Setting
50TP
Block when recloser sequence controlled blocking output is
TRUE.
79SCB 1 (enabled)
50TN
Block when recloser sequence controlled blocking output is
TRUE or when disabled by IN4.
79SCB+/IN4
1 (3 Phase
Residual)
50TQ
Block when recloser sequence controlled blocking output is
TRUE or when disabled by IN4.
79SCB+/IN4 1 (enabled)
150TP Used for high set. 0 1 (enabled)
150TN Used for high set. 0
1 (3 Phase
Residual)
150TQ Used for high set. 0 1 (enabled)
51P N/A 0 1 (enabled)
51N Block when disabled by IN4. /IN4
1 (3 Phase
Residual)
51Q Block when disabled by IN4. /IN4 1 (enabled)
151N N/A 0 0 (disabled)
24 N/A 0 0 (disabled)
27P N/A 0 0 (disabled)
27X N/A 0 0 (disabled)
59P N/A 0 0 (disabled)
159P N/A 0 0 (disabled)
159X N/A 0 0 (disabled)
47 N/A 0 0 (disabled)
25 N/A 0 0 (disabled)
81 N/A 0 0 (disabled)
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