Measuring The Operating Limit Of Set Values - ABB Relion 670 Series Commissioning Manual

1MRK 504 165-UUS Rev. J
Table 21:
Test point
1
2
3
4
5
6
7
8
9
10
11
12
13
11.4.1.1

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
the result of the measurement with the set value.
3. Repeat steps 1 to 2 to find the operating value for test points 2, 3 in table 20.
Transformer protection RET670
Commissioning manual
Test points for phase-to-earth L3-E (Ohm/Loop)
Reach Value
X (2 x X1 +X0
set
R 0
X (2 x X1 + X0
set
R 2 x R1 + R0
set
X 0.8 x (2 x X1
set
R 0.8 x (2 x R1
+RFPE
set
X 0.5 x (2 x X1
set
R 0.5 x (2 x R1
RFPE
set
X 0.85 x RFPE
R 0.85 x RFPE
X RLdFwset x tan(ArgLdSet)
R RLdFw
set
X 0
R RLdFw
set
X –0.1072 x RLdFw
R 0.4 x RLdFw
set
X –0.8 x RLdFw
R 0.8 x RLdFw
set
X 0.17 x (2 x X1
R -0.36 x (2 x X1
X 0.27 x (2 x X1
R –0.57 x (2 x X1
X 0.5 x (2 x X1
set
R 0.5 x (2 x R1
X 0
R RFPE
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Comments
)/3
set
)/3
set
)/3
set
+ X0 )/3
set
+ R0 )/3
set set
+ R0 )/3
set
+R0 )/3 +
set set
x tan(ArgLdset) ArgLd = angle for the maximal load transfer
set
Exact: 0.4 x RFPE x tan (ArgDir=20°)
set
x tan(ArgDir=20°)
set
+ X0 ) Exact: 0.5 x (2 x X1
set set
+ X0 ) Exact: 0.5 x (2X1
set set
+X0 ) Exact: 0.8 x (2 x X1
set set
+ X0 ) Exact: 0.8 x (2X1set + X0set)/(3 x tan(AgNegDir=30°)
set set
+ X0 )/3
set
+ R0 )/3
set set
Only used when RLdFw > RFPE
Testing functionality by secondary injection
X0 )/3
set set
+ X0 )/(3 x tan(AgNegDir=30°)
set set
+ X0 )/3
set set
25 and table 20. Compare
Section 11
M14944-126 v8
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