Hitachi Relion 670 Series Commissioning Manual page 117

1MRK506371-UUS Rev. M
Test point
7
8
9
10
11
12
13
11.4.7.3 Measuring the operating limit of set values
Procedure:
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 and table . Compare the
result of the measurement with the set value.
3. Repeat steps
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
and table .
11.4.7.4 Measuring the operating time of distance protection zones
Procedure:
1. Subject the IED to healthy normal load conditions for at least two seconds.
2. Apply the fault condition to find the operating time for the phase-to-phase fault according to test
point 12 for zone 1. Compare the result of the measurement to the setting tPPZ1.
3. Repeat steps
12. Compare the result of the measurement to the setting t1PG.
4. Repeat steps
Line distance protection REL670
Commissioning manual
Reach Value
X 0
R RLdFwd
X -0.8 x RLdFwd x tan( AngDir)
R 0.8 x RLdFwd
X -0.4 x RRLdFwd x tan( AngDir)
R 0.4 x RLdFwd
X 0.5 x (2 x X1 + X0
set
R 0.5 x (2 x X1 + X0
set
tan( AngNegRes))
X 0.8 x (2 x X1 + X0
set
R 0.8 x (2 x X1 + X0
set
tan( AngNegRes))
X 0.5 x (2 x X1 + X0
set
R 0.5 x (2 x R1 + R0
set
X 0
R RFPGZx
1 to 2 to find the operating value for test points 2, 3 in table
1 to 3 to find the operating value for the phase-to-ground fault C-G according to figure
Test points 8, 9, 10 and 11 are intended to test the directional lines of impedance protection.
Since directionality is a common function for all seven measuring zones, it is only necessary
to test 8, 9, 10 and 11 once, in the forward direction in order to test the accuracy of
directionality (directional angles). Directional functionality testing (trip inside, no-trip outside)
should always be made for all impedance zones set with directionality (forward or reverse).
1 to 2 to find the operating time for the phase-to-ground fault according to test point
1 to 2 to find the operating time for all other used measuring zones.
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Comments
)/3
set
)/ (3 x
set
)/3
set
)/ (3 x
set
)/3
set
)/3
set
If RFPG < RLdFwd
Section 11
Testing functionality by secondary injection
GUID-3FA4B640-38E7-406E-8FCC-8DEDABB024C4 v5
GUID-BB93C603-F43E-40CB-8EFA-3B0F280C011D v6
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