Signals - ABB RELION REX640 Technical Manual

1MRS759142 C
4.7.1.8
REX640
Technical Manual
DSTPDIS has five flexible configurable impedance zones for protection (Z1...Z5).
Phase-to-earth distance protection is a basic earth-fault protection in solidly or low-
impedance earthed networks. Together with the phase preference logic, it also serves
as a selective protection function at cross-country faults in isolated or Petersen coil
compensated networks. In certain applications, system earthing is changed during
operation from high-impedance to low-impedance earthed system due to fault
location procedures. DSTPDIS can be used in such applications by setting System
grounding GFC to "From input" and by providing information about the type of
earthing through binary input SYS_EARTHING. Low (inactive) SYS_EARTHING
input indicates low-impedance earthing system.
DSTPDIS is suitable as a basic protection function against two- and three-phase faults
in various networks, regardless of the treatment of the neutral point. The independent
setting of the reach in the reactive and the resistive directions makes it possible to
create a fast and selective short circuit protection in many applications.

Signals

Table 848: DSTPDIS Input signals
Name Type
I3P SIGNAL
I3P_PAR SIGNAL
I3P_REF SIGNAL
U3P SIGNAL
URES SIGNAL
BLOCK BOOLEAN
SYS_EARTHING BOOLEAN
TRIGG_REC BOOLEAN
BLOCK_GFC BOOLEAN
BLOCK_Z1 BOOLEAN
BLOCK_Z2 BOOLEAN
BLOCK_Z3 BOOLEAN
BLOCK_Z4 BOOLEAN
BLOCK_Z5 BOOLEAN
Table 849: DSTPDIS Output signals
Name Type
OPERATE_GFC BOOLEAN
OPERATE_Z1 BOOLEAN
OPERATE_Z2 BOOLEAN
OPERATE_Z3 BOOLEAN
OPERATE_Z4 BOOLEAN
Table continues on next page
Protection functions
Default Description
- Three-phase currents
- Three-phase currents
- Three-phase currents
- Three-phase voltages
- Residual voltage
0=False Block signal for activating the blocking mode
0=False Network earthing method
0=False External triggering for all recorded data
0=False Block GFC operate
0=False Block zone 1
0=False Block zone 2
0=False Block zone 3
0=False Block zone 4
0=False Block zone 5
Description
Time delayed operate signal, GFC
Time delayed operate signal, zone 1
Time delayed operate signal, zone 2
Time delayed operate signal, zone 3
Time delayed operate signal, zone 4
Section 4
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