ABB Relion 670 series - Setting Guidelines

R
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IED
Breaker Status
ANSI09000775-1-en.vsd
ANSI09000775 V1 EN
Figure 383: Breaker status configured with IED
16.8.4.3 Setting guidelines
GlobalBaseSel: Selects the global base value group used by the function to define IBase,
VBase and SBase as applicable.
OperationUV: Used to set the under-voltage function Enabled or Disabled.
27_COMP: Level of low voltage detection, given in % of VBase. This setting should be
based on fault calculations to find the voltage decrease in case of a fault at the most remote
point where the direct trip scheme shall be active. The phase voltages shall be calculated
for different types of faults (single phase-to-ground, phase-to-phase to ground, phase-to-
phase and three-phase short circuits) at different switching states in the network.
tUV: Time delay for trip in case of low voltage detection
OperationOV: Used to set the over-voltage function Enabled or Disabled.
59_COMP: Level of high voltage detection, given in % of VBase. This setting should be
based on fault calculations to find the voltage increase in case of an ground fault at the
most remote point where the direct trip scheme shall be active. The phase voltages shall
be calculated for different types of faults (single phase-to-ground and phase-to-phase to
ground) at different switching states in the network. The setting must be higher than the
largest phase voltage that can occur during non-disturbed network operation.
tOV: Time delay for trip in case of high voltage detection.
R1: Positive sequence line resistance given in ohm.
X1: Positive sequence line reactance given in ohm.
Xc: Half the value of the equivalent Positive sequence capacitive shunt reactance of the
line given in ohm.
1MRK 506 369-UUS - Section 16
Scheme communication
Line distance protection REL670 2.2 ANSI 781
Application manual