Signal
Description
SCBypas 1P
Bypass of the synchrocheck and close/open ready signals for the first single-phase
reclosure:
•
on —First single-phase reclosure not enabled by synchrocheck and close/open
ready signals (bypass always active).
•
off —First single-phase reclosure enabled by the synchrocheck and close/open
ready signals(bypass inactive).
SCBypas1P3P
Bypass of the synchrocheck and close/open ready signals for the first single or
three-phase reclosure:
•
on —First reclosure not enabled by synchrocheck and close/open ready signals
(bypass always active).
•
off —First reclosure enabled by synchrocheck and close/open ready signals
(bypass inactive).
Ext.SCBypas
Bypasses the synchroChck and CO Ready signals. Set to
off (F or False), if not
needed.
Input logic for enabling the close command: [(synchrocheck AND CO Ready) OR
Dead line OR Ext.SCBypas].
Input logic for enabling the close command: [(synchroChk2 AND CO Ready 2) OR
Dead line OR Ext.SCBypas].
SynchroChck
Input for a signal from a synchrocheck relay.
Set to
on (T or True), if not needed, not fitted and Dead line or ExtSCBypas not used.
Input logic: [(Synchrocheck AND CO Ready) OR Dead line OR Ext.SCBypas].
ZE Prefault
Distance relay reach setting before the first fault:
•
on —overreaching (ZExtension signal active)
•
off —underreaching (ZExtension signal inactive)
ZE 1. AR
Distance relay reach after the first reclosure attempt:
•
on —overreaching (ZExtension signal active)
•
off —underreaching (ZExtension signal inactive)
ZE 2. AR
Distance relay reach after the second reclosure attempt:
•
on —overreaching (ZExtension signal active)
•
off —underreaching (ZExtension signal inactive)
ZE 3. AR
Distance relay reach after the third reclosure attempt:
•
on —overreaching (ZExtension signal active)
•
off —underreaching (ZExtension signal inactive)
ZE 4. AR
Distance relay reach after the fourth reclosure attempt:
•
on —overreaching (ZExtension signal active)
•
off —underreaching (ZExtension signal inactive)
ZExtension
Signal to the distance function to switch it to overreach or enable an overcurrent
function with a short delay.
Master Mode
(For 1½ breaker and redundant schemes.)
Selection of an autoreclosure function to be Master:
•
on —Master output signals transmitted
•
off —Master outputs blocked
MasterDelay
Input for a signal delaying the closing command from the follower reclosure
function.
This signal picks up when the dead time of the master reclosure function starts and
is reset either by a new trip after the last reclosure of the cycle or at the end of the
wait time following successful reclosure by the master.
Set to
off (F or False), if not needed.
Table continues on next page
Section 5
1MRK 505 406-UEN B
Bay protection functions
136
Bay protection functions REB500
Technical manual
© Copyright 2019 ABB. All rights reserved