ABB RELION REB500 Technical Manual page 141

1MRK 505 406-UEN B
Signal
Dead line
Ext. Blk AR
Cond. Blk. AR
Manual Close
Inhibit Inp.
Extend t1
MD1_EXT_1P_1P
MD1_EXT_1P_3P
MD1_EXT_1P3P_3P
MD1_EXT_1P3P_1P3P
Close CB
Trip 3-Pol
Def. Trip
AR Ready
AR in Prog.
AR Blocked
First AR 3P
First AR 1P
Second AR
Third AR
Fourth AR
Inhibit Outp
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Bay protection functions REB500
Technical manual
Description
Input indicating that the line is de-energized (CB open input if the VTs are on the
busbar side).
Set to off (F or False), if not needed.
An active input overrides the following logical relationship of the inputs:
synchrocheck AND CO Ready.
Input for blocking the internal autoreclosure function.
Even an autoreclosure cycle that is in progress is immediately blocked by a signal
applied to this input.
The output signals Trip 3 Pol and Def Trip are generated and a three-phase
definitive trip takes place.
off (F or False), if not needed.
Set to
Input for a conditional blocking signal.
Blocking only when AR cycle is not in progress.
off (F or False), if not needed.
Set to
When tripping is by the distance protection SOTF logic or a directional ground fault
PLC signal, the corresponding signals can be connected to this input to prevent
autoreclosure.
Blocking input excited by the manual CB close signal.Even an autoreclosure cycle
that is in progress is immediately blocked by a signal applied to this input.
Set to off (F or False), if not needed.
Input for blocking the follower reclosure function in a redundant scheme. The
follower is blocked from the end of the master closing signal until the end of the
reclaim time.
off (F or False), if not needed.
Set to
Input for conditionally extending the dead time (single and three-phase) for the first
(fast) reclosure.
Set to off (F or False), if not needed.
Inputs for externally selecting the mode for the first reclosure. They are only
effective when the parameter
Unused inputs must be set to
input, the next mode in the list is the one that is active. The autoreclosure function
is blocked if none of the inputs is used.
CB close signal
Signal to the distance function so that it can only carry out a three-phase trip.
This signal is inverted and connected to the distance protection I/P 1P AR. This
signal is active in many situations, but particularly when the AR function is blocked,
the CB is not ready for AR, the CB is open, the single-phase discrimination time
Discrim finishes or the output signal First AR 3P is active.
It resets at the end of reclaim time.
Signal initiating definitive tripping of the CB.
This signal is normally active when the protection trips again after the last
programmed reclosing shot or trips while the AR function is blocked. The signal
resets after a fixed time of 500 ms.
Signal AR function ready for a reclosure cycle. This signal is active when the AR
function is ON and standing by and also during the closing command.
Signal indicating that a reclosure cycle is in progress.
This signal is active from the beginning of the dead time until the end of the last
reclosure attempt.
Signal indicating that the autoreclosure relay is blocked.
Signal 1st three-phase reclosure attempt in progress.
Signal 1st single-phase reclosure attempt in progress.
Signal 2nd reclosure attempt in progress (three-phase).
Signal 3rd reclosure attempt in progress (three-phase).
Signal 4th reclosure attempt in progress (three-phase).
Signal for blocking the follower AR function in a redundant scheme.
This signal is active from the end of the master AR close command to the end of the
reclaim time.
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1. AR Mode is set to Ext. select .
off (F or False). If a signal is applied to more than one
Section 5
Bay protection functions
t 1P
135