Test point Reach Value Comments
5
X 0.85 x RFPE
set
x tan(ArgLdset) ArgLd = angle for the maximal load
transfer
R 0.85 x RFPE
6 X RLdFwset x tan(ArgLdSet)
R RLdFw
set
7 X 0
R RLdFw
set
8 X –02143 x RLdFw
set
Exact: 0.8 x RFPE x tan (ArgDir=20°)
R 0.8 x RLdFw
set
9 X –0.8 x RLdFw
set
x tan(ArgDir=20°)
–0.8 x RLdFwd
set
x tan(ArgDir=20°)
R 0.8 x RLdFw
set
10 X 0.17 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2 x X1
set
X0
set
)/3
R -0.36 x (2 x X1
set
+ X0
set
) Exact: 0.5 x (2X1
set
+ X0
set
)/(3 x
tan(AgNegDir=30°)
11 X 0.27 x (2 x X1
set
+X0
set
) Exact: 0.8 x (2 x X1
set
+ X0
set
)/3
R –0.57 x (2 x X1
set
+ X0
set
) Exact: 0.8 x (2X1set + X0set)/(3 x
tan(AgNegDir=30°)
12 X 0.5 x (2 x X1
set
+ X0
set
)/3
R 0.5 x (2 x R1
set
+ R0
set
)/3
13 X 0
R RFPE
12.4.2.1 Measuring the operating limit of set values in cases without shaped
load encroachment characteristics (OperationLdCmp=off)
Procedure for phase-to-phase fault L1–L2.
1. Subject the IED to healthy normal load conditions for at least two seconds.
2. Apply the fault condition and slowly decrease the measured impedance to find
the operating value of the phase-to-phase fault for zone 1 according to test point
1 in
Figure 31 and Table 12. Compare the result of the measurement with the set
value.
3. Repeat steps 1 to 2 to find the operating value for test point 2, 3 in Table 12 and
the operating value for the phase-to-earth loop according to test point 1, 2, 3 in
Table 13.
Observe that the zones that are not tested have to be blocked and the zone that is
tested has to be released.
4. Repeat steps 1 to 3 to find the operating value for the phase-to-earth fault L3-E
according to Figure 32 and Table 13
Test points 8 and 9 are intended to test the directional lines of
impedance protection. Since directionality is a common
1MRK502053-UEN B Section 12
Testing functionality by secondary injection
Generator protection REG670 2.0 IEC 113
Commissioning manual
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