INRPHAR1(3I2f>(
BLOCK
BLK2H
INRPHAR1_BLK2H
GUID-0C2E754B-1654-4783-8592-114295C871A5 V2 EN
Figure 17:
Inrush detector function
Two negative-sequence overcurrent stages NSPTOC1 and NSPTOC2 are provided
for phase unbalance protection. These functions are used to protect the feeder against
phase unbalance.
OR
B1
B2
O
NSPTOC1(I2>(1))
BLOCK
ENA_MULT
OPERATE
START
NSPTOC2(I2>(2))
BLOCK
ENA_MULT
OPERATE
START
NSPTOC1_OPERATE
NSPTOC1_OPERATE
NSPTOC2_OPERATE
NSPTOC2_OPERATE
NSPTOC1_START
NSPTOC2_START
CCSPVC1_FAIL
CCSPVC1_FAIL
NSPTOC_OPERATE
GUID-3449C623-2993-4C9D-9973-D655F8B283A2 V2 EN
Figure 18:
Negative sequence overcurrent protection function
One non-directional sensitive earth-fault stage EFHPTOC1 is offered for earth-fault
protection.
EFHPTOC1(Io>>(1
BLOCK
ENA_MULT
OPERATE
START
EFHPTOC1_OPERATE
EFHPTOC1_START
CCSPVC1_FAIL
GUID-EC5E7304-8DB0-4CF2-B4BA-E3C72DB8FF25 V2 EN
Figure 19:
Earth-fault protection function
Three-phase thermal protection for feeders, cables and distribution transformers
T1PTTR1 detects overloads under varying load conditions. The
BLK_CLOSE
output
of the function is used to block the closing operation of the circuit breaker.
T1PTTR1(3Ith>F(
BLK_OPR
ENA_MULT
AMB_TEMP
OPERATE
START
ALARM
BLK_CLOSE
T1PTTR1_BLK_CLOSE
T1PTTR1_OPERATE
T1PTTR1_START
GUID-F30D16E2-EE36-4B01-B992-C804C1E87AA7 V2 EN
Figure 20:
Thermal overcurrent protection function
Circuit breaker failure protection CCBRBRF1 is initiated via the
START
input by a
number of different protection functions available in the relay. The breaker failure
protection function offers different operating modes associated with the circuit
breaker position and the measured phase and residual currents.
Section 3
1MRS758272 B
REG615 standard configurations
44
REG615
Application Manual
