Three-Phase Tripping; Single- And/Or Three-Phase Tripping - ABB Relion REC670 Applications Manual

Section 15
Logic
To prevent closing of a circuit breaker after a trip the function can block the closing.
The two instances of the SMPPTRC function are identical except, for the name of the function
block (SMPPTRC1 and SMPPTRC2). References will therefore only be made to SMPPTRC1 in the
following description, but they also apply to SMPPTRC2.
15.1.2.1

Three-phase tripping

A simple application with three-phase tripping from the logic block utilizes part of the function
block. Connect the inputs from the protection function blocks to the input TRIN. If necessary
(normally the case) use a logic OR block to combine the different function outputs to this
input. Connect the output TRIP to the digital Output/s on the IO board.
This signal can also be used for other purposes internally in the IED. An example could be the
starting of Breaker failure protection. The three outputs TRL1, TRL2, TRL3 will always be
activated at every trip and can be utilized on individual trip outputs if single-phase operating
devices are available on the circuit breaker even when a three-phase tripping scheme is
selected.
Set the function block to
example,
For special applications such as Lock-out refer to the separate section below. The typical
connection is shown below in figure 180. Signals that are not used are dimmed.
Impedance protection zone 1 TRIP
Impedance protection zone 3 TRIP
Impedance protection zone 2 TRIP
IEC05000544 V2 EN-US
Figure 180: Tripping logic SMPPTRC is used for a simple three-phase tripping application
15.1.2.2

Single- and/or three-phase tripping

The single-/three-phase tripping will give single-phase tripping for single-phase faults and
three-phase tripping for multi-phase fault. The operating mode is always used together with a
single-phase autoreclosing scheme.
The single-phase tripping can include different options and the use of the different inputs in
the function block.
The inputs 1PTRZ and 1PTREF are used for single-phase tripping for distance protection and
directional earth fault protection as required.
358
Program = 3Ph and set the required length of the trip pulse to for
tTripMin = 150ms .
³1
EF4PTOC TRIP
SMPPTRC
BLOCK TRIP
BLKLKOUT TRL1
TRIN TRL2
TRINL1 TRL3
TRINL2 TR1P
TRINL3 TR2P
PSL1 TR3P
PSL2 CLLKOUT
PSL3
1PTRZ
1PTREF
P3PTR
SETLKOUT
RSTLKOUT
1MRK 511 358-UEN A
M14828-7 v8
en05000544.vsd
M14828-11 v4
Application manual