Testing the measuring element
GUID-E175A70C-F17A-45B3-8FBF-774A9AB96DCD v1
1.
Set
OpZx
to On,
DirModeZx
to Forward,
LEModeZx
to On,
LCModeZx
to Off
and
PhSelModeZx
to Phsel logic. Assume that the output LDCND is available
before performing testing of measuring zone for accuracy. Where x = 1, 2, …,
6.
2.
Set
ZoneCharSym
to NonSymmetry.
3.
Set
ModePhPref
to Equal priority.
4.
Set
ArgNegRes
and
ArgDir
to their default values.
5.
Set
X1FWZx
,
LineAng
,
ArgLd
,
REOverRLZx
,
XEOverXLZx
,
RFPEFwZx
,
RFPERvZx
,
RFPPFwZx
and
RFPPRvZx
accordingly. Also, ensure that the
RLd
value is lower than set
RFPEFWZx/RFPPFwZx
values.
6.
Reach settings of starting element must be larger than zone reach settings to
have proper selectivity.
Phase-to-earth fault – measuring element
GUID-D46670BC-2B55-48CC-BC0B-CEF9CB35F2C8 v2
Test points that are to be considered for measurement accuracy of set reactance
reach are shown in Figure
and Table
.
Where:
X1Fw =
X1FwZx
∗
(1 +
XEOverXLZx
)
R1Fw = (
X1FwZx
/ tan (
LineAng
))
∗
(1 +
REOverRLZx
)
IEC15000435-1-en.vsdx
R
jX
RFPEFwZx
R1Fw
RFPERvZx
X1Fw
RFPEFwZx
RFPERvZx
RLd
80%
P1
P2
P3
P4
P5
P6
P7
P8
P9
ArgLd
ArgDir
ArgNegRes
( )
( )
IEC15000435 V1 EN-US
Figure 19:
Proposed test points for phase-to-earth loop of measuring element
1MRK 506 377-UEN C
Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC
95
Commissioning manual
Summary of Contents for RELION RER670
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