Test point
R
X
Comment
P7
0
-
X1Start
P8
-(
X1Start /
tan(
LineAng))
-
X1Start
P9
-
RFPPStart
-0.8 ∗
X1Start
P10
-0.8 ∗
RFPPStart
-0.8 ∗
RFPPStart ∗
tan(
ArgLd)
P11
-
RLd
0
P12
-
RFPPStart
0
If
OpLoadEnch = Off
P13
0.8 ∗
RFPPStart
-0.8 ∗
RFPPStart ∗
tan(
ArgLd)
P14
RFPPStart
-0.8 *
X1Start
P15
-0.8 ∗
RFPPStart
0.8 ∗
RFPPStart ∗
tan(
ArgLd)
P16
-
RFPPStart
0.8 ∗
X1Start
1.
Change the magnitude and angle of phase-to-phase voltage to achieve
impedances at test points P1, P2, …, P16.
2.
For each test point, observe that the output signals STELEMST, STNDZL1
and STNDZL2 are activated.
Compensated/high impedance earthed systems
GUID-4F0E1FFA-7356-4429-8CFD-C78A5E61CEDA v1
1.
Select type of earthing system by setting parameter
SystemEarthing
and set to
either Compensated or High impedance.
2.
Select
CharStartZ<
to Circular and set
OpLoadEnch
to On.
3.
Set
Z1CircleStart
,
REOverRLStart
,
XEOverXLStart
,
LineAng
and
ArgLd
to
default values. Also, set
RLd
such that its value is lower than
Z1CircleStart
.
Phase-to-earth fault – circular characteristic
GUID-F98052A3-2D77-4792-A07E-ADD61717C70A v2
Test points that are to be considered for measurement accuracy of set impedance
reach are shown in Figure
and Table
.
1MRK 506 377-UEN C
Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC
89
Commissioning manual
Summary of Contents for RELION RER670
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