Single-, Two- Or Three-Phase Tripping; Lock-Out; Blocking Of The Function Block; Setting Guidelines - ABB Relion REC670 Applications Manual

Section 15
Logic
15.1.2.3

Single-, two- or three-phase tripping

The single-/two-/three-phase tripping mode provides single-phase tripping for single-phase
faults, two-phase tripping for two-phase faults and three-phase tripping for multi-phase
faults. The operating mode is always used together with an autoreclosing scheme with setting
Program = 1/2/3Ph or Program = 1/3Ph attempt.
The functionality is very similar to the single-phase scheme described above. However
SESRSYN must in addition to the connections for single phase above be informed that the trip
is two phase by connecting the trip logic output TR2P to the respective input in SESRSYN.
15.1.2.4

Lock-out

This function block is provided with possibilities to initiate lock-out. The lock-out can be set to
only activate the block closing output CLLKOUT or initiate the block closing output and also
maintain the trip signal (latched trip).
The lock-out can then be manually reset after checking the primary fault by activating the
input reset Lock-Out RSTLKOUT.
If external conditions are required to initiate Lock-out but not initiate trip this can be achieved
by activating input SETLKOUT. The setting
activate lock-out so only initiation of the input SETLKOUT will result in lock-out. This is
normally the case for overhead line protection where most faults are transient. Unsuccessful
autoreclose and back-up zone tripping can in such cases be connected to initiate Lock-out by
activating the input SETLKOUT.
15.1.2.5

Blocking of the function block

The function block can be blocked in two different ways. Its use is dependent on the
application. Blocking can be initiated internally by logic, or by the operator using a
communication channel. Total blockage of the trip function is done by activating the input
BLOCK and can be used to block the output of the trip logic in the event of internal failures.
Blockage of lock-out output by activating input BLKLKOUT is used for operator control of the
lock-out function.
15.1.3

Setting guidelines

The parameters for Tripping logic SMPPTRC are set via the local HMI or PCM600.
The following trip parameters can be set to regulate tripping.
Operation : Sets the mode of operation. Off switches the tripping off. The normal selection is
On .
Program : Sets the required tripping scheme. Normally 3Ph or 1/2Ph are used.
TripLockout : Sets the scheme for lock-out. Off only activates the lock-out output. On activates
the lock-out output and latches the output TRIP. The normal selection is
AutoLock : Sets the scheme for lock-out. Off only activates lock-out through the input
SETLKOUT.
selection is
tTripMin : Sets the required minimum duration of the trip pulse. It should be set to ensure that
the breaker is tripped correctly. Normal setting is
360
On additonally allows activation through the trip function itself. The normal
Off .
AutoLock = Off means that the internal trip will not
0.150s .
1MRK 511 358-UEN A
M14828-15 v3
M14828-18 v4
M14828-21 v3
M12274-3 v6
Off .
Application manual