ABB Relion 670 Series Commissioning Manual page 87

1MRK 506 377-UEN Rev. K
Testing the measuring element
1. Set OpZx to On, DirModeZx to Forward, 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
Test points that are to be considered for measurement accuracy of set reactance reach are shown in
Figure 17
Where:
X1Fw = X1FwZx ∗ (1 + XEOverXLZx)
R1Fw = (X1FwZx / tan (LineAng)) ∗ (1 + REOverRLZx)
IEC15000435 V2 EN-US
Figure 17:
Railway application RER670
Commissioning manual
and Table 19.
jX(Ohm/loop)
RFPERvZx
P8
80%
P9
X1Fw
ArgNegRes
RFPERvZx
Proposed test points for phase-to-earth loop of measuring element
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R 1 Fw RFPEFwZx
P1
P2
P4
ArgLd
P5 P6
ArgDir
P7
RLd
RFPEFwZx
IEC15000435-2-en.vsdx
Testing functionality by secondary injection
GUID-E175A70C-F17A-45B3-8FBF-774A9AB96DCD v2
GUID-D46670BC-2B55-48CC-BC0B-CEF9CB35F2C8 v3
P3
R(Ohm/loop)
Section 10
81