ABB RELION 615 Series Applications Manual page 116

Section 3
REG615 standard configurations
110
ARCSARC1_OPERATE
X130_BI3_RST_LOCKOUT
ARCSARC2_OPERATE
X130_BI3_RST_LOCKOUT
ARCSARC3_OPERATE
X130_BI3_RST_LOCKOUT
GUID-00D88773-7C5C-4DE6-8A2C-2B5E85454E96 V2 EN
Figure 147: Arc protection with dedicated HSO
Residual overvoltage protection ROVPTOV provides protection against stator earth
faults from 5% to 100% of winding from neutral. Two instances of ROVPTOV are
provided.
ROVPTOV1_OPERATE
ROVPTOV2_OPERATE
GUID-C2944708-E995-4BD7-B611-6CAC4BD0847E V2 EN
Figure 148: Residual overvoltage protection function
The selectable underfrequency or overfrequency or rate of change of frequency
protection FRPFRQ prevents damage to network components under unwanted
frequency conditions. The function also contains a selectable rate of change of the
frequency (gradient) protection to detect an increase or decrease in the fast power
system frequency at an early stage. This can be used as an early indication of a
disturbance in the system. Configuration offers four instances of frequency
protection, these instances can be configured to operate as underfrequency or
overfrequency or rate of change of frequency according to the system requirement.
The frequency protection is blocked when generator CB is in open position.
TRPPTRC3
BLOCK TRIP
OPERATE CL_LKOUT
RST_LKOUT
TRPPTRC4
BLOCK TRIP
OPERATE CL_LKOUT
RST_LKOUT
TRPPTRC5
BLOCK TRIP
OPERATE CL_LKOUT
RST_LKOUT
ROVPTOV1
BLOCK OPERATE
START
ROVPTOV2
BLOCK OPERATE
START
OR
B1 O
B2
1MRS758272 B
TRPPTRC3_TRIP
TRPPTRC4_TRIP
TRPPTRC5_TRIP
ROVPTOV1_OPERATE
ROVPTOV1_START
ROVPTOV2_OPERATE
ROVPTOV2_START
ROVPTOV_OPERATE
REG615
Application Manual