Basler Electric BE1-851 - Manual (Page 203)

Table 8-21. BUS Contact Sensing Input Logic
Input Purpose Name Label
State Labels
Energized De-Energized
IN1 52b Breaker Status. BREAKER OPEN CLOSED
IN2 Block instantaneous FEEDER_PU PICKUP NORMAL
IN3
Signal from relay on bus source that is using
BACKUP logic that a feeder relay is out of
service.
BACKUPMODE BACKUP NORMAL
IN4
Put the relay in test mode so that reclosing
and breaker failure are disabled when IN4 is
de-energized.
TESTDISABL NORMAL TSTMODE
Table 8-22. BUS Function Block Logic
Function Purpose
BESTlogic
Expression
Mode
Setting
50TP
Used for instantaneous phase overcurrent protection. Block
when feeder relay is picked up indicating that the fault is on a
feeder.
IN2 1 (enabled)
50TN
Used for instantaneous neutral overcurrent protection. Block
when feeder relay is picked up indicating that the fault is on a
feeder.
IN2 1 (enabled)
50TQ
Used for instantaneous negative-sequence overcurrent
protection. Block when feeder relay is picked up indicating
that the fault is on a feeder.
IN2 1 (enabled)
150TP N/A 0 0 (disabled)
150TN N/A 0 0 (disabled)
150TQ N/A 0 0 (disabled)
51P Used for timed phase overcurrent protection. 0 1 (enabled)
51N Used for timed neutral overcurrent protection. 0 1 (enabled)
51Q Used for timed negative-sequence overcurrent protection. 0 1 (enabled)
62
Initiate time delay when 51 trip expressions are TRUE to
provide backup tripping of the bus breaker when the relay is
being used for backup feeder protection.
VO8 1 (PU/DO)
162 N/A 0 0 (disabled)
79 N/A 0 0 (disabled)
BF N/A 0 0 (disabled)
GROUP
Switch to setting group 1 if feeder relay is out of service. IN3
2(Binary
Inputs)
No manual logic is used. 0
No manual logic is used. 0
No manual logic is used. 0
Fix Auto/Manual switch in the manual position only. Selection
by contact sensing only. No automatic selection logic.
0
9289900990 Rev R BE1-851 Application 8-47