Hitachi RER670 Commissioning Manual page 99

1MRK 506 377-UEN Rev. L
Phase-to-phase fault—measuring element
Test points that are to be considered for measurement accuracy of set reactance reach are shown in
Figure 24
Where:
X1Fw = X1FwZx
R1Fw = X1FwZx / tan (LineAng)
IEC15000436 V2 EN-US
Figure 24:
Table 26:
Test point
P1
P2
P3
P4
P5
P6
P7
P8
P9
Railway application RER670
Commissioning manual
and Table 26.
jX(Ohm/phase)
RFPPRvZx
P8
80%
X1Fw
P9
ArgNegRes
RFPPRvZx
Proposed test points for phase-to-phase loop of measuring element
Test points for phase-to-phase loop measuring element
R
0
R1Fw
(0.8 ∗ R1Fw) + RFPPFwZx
0.8 ∗ RFPPFwZx
RLd
RFPPFwZx
0.5 ∗ RLd
-0.5 ∗ RFPPRvZx
-0.8 ∗ X1Fw ∗ tan
(ArgNegRes)
© 2017 - 2022 Hitachi Energy. All rights reserved
R1 Fw RFPPFwZx
P1
P2
P4
ArgLd
P5 P6
ArgDir
P7
RLd
RFPPFwZx
IEC15000436-2-en.vsdx
X
X1Fw
X1Fw
0.8 ∗ X1Fw
0.8 ∗ RFPPFwZx ∗ tan
(ArgLd)
0
0
-0.5 ∗ RLd ∗ tan (ArgDir)
X1Fw
0.8 ∗ X1Fw
Testing functionality by secondary injection
GUID-C8EE9E16-7307-4853-B9A9-6AFCEA8807BE v2
P3
R(Ohm/phase)
Comment
OpLoadEnch = Off
Section 10
93