Test point R X Comment
P6 -
RLd
0 If 2I0 <
I0MinOp
P7
Z1CircleStart
∗
cos(
ArgLd
) ∗
(1+
REOverRLStart
)
-
Z1CircleStart
∗
sin(
ArgLd
) ∗
(1+
XEOverXLStart
)
P8 -
Z1CircleStart
∗
cos(
ArgLd
) ∗
(1+
REOverRLStart
)
Z1CircleStart
∗
sin(
ArgLd
) ∗
(1+
XEOverXLStart
)
1. Change the magnitude and angle of phase-to-earth voltage in phase L1 to
achieve impedances at test points P1, P2, …, P8.
2. For each test point, observe that the output signals STELEMST and
STNDZL1 are activated.
3. Repeat the above test by injecting phase-to-earth voltage in phase L2 in
accordance with test points and observe that the output signals STELEMST
and STNDZL2 are activated.
Phase-to-phase fault - circular characteristic
GUID-73E7937D-2823-4A99-BC3E-1413C414D1C4 v1
Test points that are to be considered for measurement accuracy of set impedance
reach are shown in Figure
14 and Table 16.
Section 10 1MRK 506 377-UEN C
Testing functionality by secondary injection
84 Railway application RER670 2.2 IEC
Commissioning manual
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