Three-Pole Tripping - ABB RELION 670 Series Applications Manual

Section 15
Logic
15.1.1.1

Three-pole tripping

A simple application with three-pole tripping from the logic block utilizes part of the function
block. Connect the inputs from the protection function blocks to the input TRINP_3P. 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 TR_A, TR_B, TR_C will always be activated
at every trip and can be utilized on individual trip outputs if single-pole operating devices are
available on the circuit breaker even when a three-pole 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 75. Signals that are not used are dimmed.
Impedance protection zone 1 TRIP
Impedance protection zone 3 TRIP
Impedance protection zone 2 TRIP
ANSI05000544 V2 EN-US
Figure 75: Tripping logic SMPPTRC (94) is used for a simple three-pole tripping application
15.1.1.2 Single- and/or three-pole tripping
The single-/three-pole tripping will give single-pole tripping for single-phase faults and three-pole
tripping for multi-phase fault. The operating mode is always used together with a single-phase
autoreclosing scheme.
The single-pole 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-pole tripping for distance protection and
directional ground fault protection as required.
The inputs are combined with the phase selection logic and the pickup signals from the phase
selector must be connected to the inputs PS_A, PS_B and PS_C to achieve the tripping on the
respective single-pole trip outputs TR_A, TR_B and TR_C. The Output TRIP is a general trip and
200
Program = 3Ph and set the required length of the trip pulse to for
tTripMin = 150ms .
OR
EF4PTOC TRIP
SMPPTRC (94)
BLOCK TRIP
BLKLKOUT TR_A
TRINP_3P TR_B
TRINP_A TR_C
TRINP_B TR1P
TRINP_C TR2P
PS_A TR3P
PS_B CLLKOUT
PS_C
1PTRZ
1PTRGF
P3PTR
SETLKOUT
RSTLKOUT
1MRK 511 364-UUS A
ANSI05000544-2-en.vsd
Application manual
M14828-7 v8
M14828-11 v4