ABB RES670 Technical Manual page 412

Section 15
Logic
406
The inputs 1PTRZ and 1PTRGF enable single-pole and two-pole tripping for those
functions which do not have their own pole selection capability (i.e. which have just a
single trip output). An example of such a protection function is the residual overcurrent
protection. The SMPPTRC (94) function has two inputs for these functions, one for
impedance tripping (1PTRZ used for carrier-aided tripping commands from the scheme
communication logic), and one for ground fault tripping (1PTRGF used for tripping
from a residual overcurrent protection). External pole selection for these two trip
signals shall be provided via inputs PS_A, PS_B and PS_C.
A timer tWaitForPHS, secures a three-phase trip command for these two trip signals in
the absence of the external phase selection signals.
The SMPPTRC (94) function has three trip outputs TR_A, TR_B, TR_C (besides the
three-phase trip output TRIP), one per phase, to connect to one or more of the IEDs'
binary outputs, as well as to other functions within the IED requiring these signals.
These three output signals shall be used as trip signals for individual circuit breaker
poles. These signals are important for cooperation with the autorecloser SMBRREC
(79) function.
The SMPPTRC (94) function is equipped with logic which secures correct operation
for evolving faults as well as for reclosing on to persistent faults. A binary input
P3PTR is provided which will force all tripping to be three-pole. This input is required
in order to cooperate with the SMBRREC function.
In multi-breaker arrangements, one SMPPTRC (94) function block is used for each
circuit breaker.
The lockout function
A tripped circuit breaker can be locked out and prevented from closing by the output
close lockout (CLLKOUT). The reset lockout (RSTLKOUT) is the input for
deactivating and resetting the output close lockout CLLKOUT.
CLLKOUT can be set by an external trip signal from another protection function via
the input SETLKOUT or internally via a three-pole trip with the setting AutoLock =
Enabled. If CLLKOUT is set by an external trip signal from another protection
function and setting TripLockout = Enabled, all trip outputs are set true.
The BLKLKOUT input blocks the circuit breaker lockout output CLLKOUT.
Directional data
Merged directional data from application functions can be provided to the trip function
(SMPPTRC) via the start matrix function (SMAGAPC) connected to the CND input.
The directional input signal CND is a coded integer signal which may contain up to 14
individual Boolean signals; see Figure 148:
1MRK 511 408-UUS A
Phasor measurement unit RES670 2.2 ANSI
Technical manual