Schweitzer Engineering Laboratories SEL-751 - Table 4.54 Reclosing Control Settings

4.141
Date Code 20170927 Instruction Manual SEL-751 Relay
Protection and Logic Functions
Group Settings (SET Command)
For example, if 52A := IN101, a 52A circuit breaker auxiliary contact is con-
nected to input IN101. If the reclosing relay does not exist, the close logic still
operates, allowing closing to take place via SEL
OGIC control equation setting
CL (close conditions, other than automatic reclosing). See Trip/Close Logic
for more discussion on SEL
OGIC control equation settings 52A and CL.
Reclosing Control Settings
The reclosing control settings are shown in Table 4.54:
The operation of open interval timers is affected by SEL
OGIC control equation
settings discussed later in this section.
Open Interval Timers
The reclose enable setting, E79, determines the number of open interval time
settings that can be set. For example, if setting E79 := 3, the first three open
interval time settings in Tab le 4.54, are made available for setting.
If an open interval time is set to zero, then that open interval time is not opera-
ble, and neither are the open interval times that follow it.
In the factory settings in Table 4 .54, the open interval 2 time setting 79OI2 is
the first open interval time setting set equal to zero:
79OI2 := 0.00 seconds
Table 4.54 Reclosing Control Settings
Setting Prompt Setting Range
Setting Name :=
Fac to ry Defa ult
ENABLE RECLOSER N, 1–4, C1–C4, Shots E79 := N
OPEN INTERVAL 1 0.00–3000.00 sec 79OI1 := 0.00
OPEN INTERVAL 2 0.00–3000.00 sec 79OI2 := 0.00
OPEN INTERVAL 3 0.00–3000.00 sec 79OI3 := 0.00
OPEN INTERVAL 4 0.00–3000.00 sec 79OI4 := 0.00
RST TM FROM RECL 0.00–3000.00 sec 79RSD := 15.00
RST TM FROM LO 0.00–3000.00 sec 79RSLD := 5.00
RECLS SUPV TIME OFF, 0.00–3000.00 sec 79CLSD := OFF
RECLOSE INITIATE SV 79RI := TRIP
RCLS INIT SUPVSN SV 79RIS := 52A OR 79CY
DRIVE-TO-LOCKOUT SV 79DTL := OC OR SV04T
DRIVE-TO-LSTSHOT SV 79DLS := 79LO
SKIP SHOT SV 79SKP := 0
STALL OPN INTRVL SV 79STL := TRIP
BLOCK RESET TMNG SV 79BRS := TRIP
SEQ COORDINATION SV 79SEQ := 0
RCLS SUPERVISION SV 79CLS := 1