Change the magnitude and angle of phase-to-phase voltage to achieve impedances at
test points 1, 2 and 3. For each test point, observe that the output signals, PICKUP and
TRx are activated where x refers to the actual phase to be tested. After the timer
tPP
for the actual zone has elapsed, also the signals TRIP and TRx shall be activated.
Phase-to-ground faults
For simplicity, the same test points as for phase-to-phase faults are proposed, but
considering new impedance values.
ZAngPE
50%
Ohm/loop
R
X
IEC07000010-4-en.vsd
IEC07000010 V4 EN
Figure 12:
Table 5:
Test points for phase-to-phase loops A-B (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-ground fault for each test point that the
output signals TRIP and TRx 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 and TRx
shall be activated.
Section 6
1MRK 506 331-UUS A
Testing functionality
50
Commissioning Manual
Содержание Relion 650 Series REL650
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