ABB Relion 670 Series Commissioning Manual page 88

Section 10
Testing functionality by secondary injection
Table 19:
Test point
P1
P2
P3
P4
P5
P6
P7
P8
P9
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, STL2 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
Test points that are to be considered for measurement accuracy of set reactance reach are shown in
Figure 18
Where:
X1Fw = X1FwZx
R1Fw = X1FwZx / tan (LineAng)
82
Test points for phase-to-earth loop measuring element
R
0
R1Fw
(0.8 ∗ R1Fw) +
RFPEFwZx
0.8 ∗ RFPEFwZx
RLd
RFPEFwZx
0.5 ∗ RLd
-0.5 ∗ RFPERvZx
-0.8 ∗ X1Fw ∗ tan
(ArgNegRes - 90)
and Table 20.
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X
X1Fw
X1Fw
0.8 ∗ X1Fw
0.8 ∗ RFPEFwZx ∗ tan
(ArgLd)
0
0
-0.5 ∗ RLd ∗ tan (ArgDir)
X1Fw
0.8 ∗ X1Fw
Railway application RER670
1MRK 506 377-UEN Rev. K
Comment
OpLoadEnch = Off
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Commissioning manual