Table 21:
Test points for phase-to-earth loop measuring element
Test point
R
X
Comment
P1
0
X1Fw
P2
R1Fw
X1Fw
P3
(0.8 ∗
R1Fw) +
RFPEFwZx
0.8 ∗
X1Fw
P4
0.8 ∗
RFPEFwZx
0.8 ∗
RFPEFwZx ∗ tan
(
ArgLd)
P5
RLd
0
P6
RFPEFwZx
0
If
LEModeZx = Off and
OpLoadEnch = Off
P7
0.5 ∗
RLd
0.5 ∗
RLd ∗ tan
(
ArgDir)
P8
0.5 ∗
RFPERvZx
X1Fw
P9
0.8 ∗
X1Fw ∗ tan
(
ArgNegRes)
0.8 ∗
X1Fw
1.
Change the magnitude and angle of phase-to-earth voltage in phase L1 to
achieve impedances at test points P1, P2, …, P9.
2.
Test points P7 and P9 are intended to test the directional lines of impedance
protection and used to find directional accuracy for phase-to-earth faults.
3.
For each test point, observe that the start output signals START, STZx,
STNDZx, STL1 and STPE are activated.
4.
Trip signals TRIP, TRZx, TRL1 will appear after set delay time of
tPEZx
if
OpModetPEZx
is set to On and
TimerSelZx
is set to Timers separated.
5.
Repeat the above test by injecting phase-to-earth voltage in phase L2 in
accordance with test points and steps described above and observe that the
start output signals START, STZx, STNDZx, STL1 and STPE are activated.
6.
Trip signals TRIP, TRZx, TRL2 will appear after set delay time of
tPEZx
if
OpModetPEZx
is set to On and
TimerSelZx
is set to Timers separated.
phase-to-phase fault – measuring element
GUID-C8EE9E16-7307-4853-B9A9-6AFCEA8807BE v1
Test points that are to be considered for measurement accuracy of set reactance
reach are shown in Figure
and Table
.
Where:
X1Fw =
X1FwZx
R1Fw =
X1FwZx
/ tan (
LineAng
)
Section 10
1MRK 506 377-UEN C
Testing functionality by secondary injection
96
Railway application RER670 2.2 IEC
Commissioning manual
Summary of Contents for RELION RER670
Page 1: ...RELION 670 SERIES Railway application RER670 Version 2 2 IEC Commissioning manual...
Page 2: ......
Page 26: ...20...
Page 54: ...48...
Page 58: ...52...
Page 62: ...56...
Page 80: ...74...
Page 188: ...182...
Page 194: ...188...
Page 204: ...198...
Page 214: ...208...
Page 215: ...209...