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
19 and Table 21.
Where:
X1Fw = X1FwZx ∗ (1 + XEOverXLZx)
R1Fw = (X1FwZx / tan (LineAng)) ∗ (1 + REOverRLZx)
IEC15000435-1-en.vsdx
R
jX
RFPEFwZxR1FwRFPERvZx
X1Fw
RFPEFwZxRFPERvZx
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
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