ABB Relion - Page 43

LED 4
SELGAPC4
OUT_4
IN_11
OSWGAPC10
OR
OUT
IN_12
IN_13
IN_14
IN_15
POSITIVE AND NEGATIVE SEQUENCE PROTECTION INDICATION
PSPTUV1
U1<(1)
47U+(1)
BLOCK START
OPERATE3I
PSPTUV2
U1<(2)
47U+(2)
BLOCK START
OPERATE3I
NSPTOV1
U2>(1)
47O-(1)
BLOCK START
OPERATE3I
NSPTOV2
U2>(2)
47O-(2)
BLOCK
START
OPERATE
3I
GUID-1D8D400A-3ED1-4C24-BE3D-A93EB046013D V1 EN
Figure 18: Unbalance protection
Four unbalance voltage protection functions are available, two stages of positive-
sequence undervoltage protection PSPTUV and two stages of negative-sequence
overvoltage protection NSPTOV.
The operate signals of these unbalance voltage protections are connected to the master
trip and to alarm LED 4.
1MRS758335 B Section 3
REU611 standardized configuration
REU611 37
Application Manual