Single-, Two- Or Three-Pole Tripping; Lock-Out - Hitachi Relion 670 Series Applications Manual

Section 15
Logic
Phase segregated trip A, B and C
from example line differential or
distance protection
Phase selection A, B and C from
external phase selection logic
Trip by communication scheme of
distance protection if required to
provide a single pole trip
Trip by communication scheme of
earth fault protection if required to
provide single pole trip
TR3P
To activate lockout for any trip
To reset lockout
ANSI05000545 V7 EN-US
Figure 85:
15.1.3.3

Single-, two- or three-pole tripping

The single-/two-/three-pole tripping mode provides single-pole tripping for single-phase faults, two-pole
tripping for two-phase faults and three-pole tripping for three-phase faults. The operating mode is always
used together with an autoreclosing scheme with setting ARMode = 1/2/3 ph or ARMode = 1/2 Ph.
The functionality is very similar to the single-phase scheme described above. However, in addition to the
connections for single phase SMBRREC (79) must also be informed that the trip is two phases by
connecting the output TR2P to the input TR2P in the SMBRREC (79) function.
15.1.3.4

Lock-out

The SMPPTRC function block is provided with possibilities to initiate lockout. The lockout can be set to
only activate the circuit breaker lockout output CLLKOUT or to both initiate the circuit breaker lockout
output and to maintain the trip signal outputs TRIP, TR_A, TR_B , TR_C, and TR3P (latched).
If external conditions are required to initiate a circuit breaker lockout, it can be achieved by activating
input SETLKOUT. The setting AutoLock = Disabled means that the internal three-phase trip will not
activate lockout so only initiation of the input SETLKOUT will result in lockout. This is normally the case
for overhead line protection where most faults are transient. Unsuccessful autoreclosing and back-up
zone tripping can in such cases be connected to initiate lockout by activating the input SETLKOUT.
208
Protection functions with 3
phase trip, for example time
delayed overcurrent protection
SMBRREC
PREP3P
To prepare 3 phase trip
for any trip signal
The trip logic function SMPPTRC (94) used for single-pole tripping application
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SMPPTRC (94)
OR
BLOCK
BLKLKOUT
TRINP_3P
TRINP_A
TRINP_B
TRINP_C
PS_A
PS_B CLLKOUT
PS_C
1PTRZ
1PTRGF
P3PTR
SETLKOUT
RSTLKOUT
CND
1MRK511407-UUS Rev. N
TRIP
TR_A
TR_B
TR_C
TR1P
TR2P
TR3P
BFI_3P
BFI_A
BFI_B
BFI_C
STN
FW
REV
ANSI05000545-6-en.vsdx
Phasor measurement unit RES670
Application manual
M14828-15 v5
M14828-18 v7