ZAngPE
50%
Ohm/loop
R
X
IEC07000010-4-en.vsd
IEC07000010 V4 EN-US
Figure 28: Proposed test points for phase-to-earth faults
Table 25: Test points for phase-to-earth loops L1-L2 (Ohm/Loop)
Test
points
Reach Value Comments
1 X ZPE · sin(ZAngPE)
R ZPE · cos(ZAngPE)
2 X 0,5·ZPE · sin(ZAngPE)
R 0,5·ZPE + ΔR = 0,5·ZPE · (1 - cos(ZAngPE))
3 X 0,5·ZPE·sin(ZangPE)
R 0,5·ZPE - ΔR = 0,5·ZPE · (1 - cos(ZAngPE))
Check also in the same way as for phase-to-earth fault for each test point that the
output signals STPE, are activated where x refers to the actual phase to be tested.
After the timer tPE for the zone has elapsed, also the signals TRIP, TRPE and TRx
shall be activated.
11.4.4 Faulty phase identification with load encroachment
FMPSPDIS
GUID-79761A97-A99A-4788-94A5-341308DF6E45 v3
There is no specific test routine for this function. The function is tested in
conjunction with other impedance (mho) functions.
11.4.5 Distance protection zones, quadrilateral characteristic,
separate settings ZMRPDIS
GUID-A35C2DED-70A6-4E96-864D-3A6C1147B350 v3
Prepare the IED for verification of settings as outlined in section
"Preparing for
test" in this chapter.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 123
Commissioning manual
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