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

Section 10
Testing functionality by secondary injection
Test point
3
4
5
6
7
8
9
10
11
12
13
10.4.1.1

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
3. Repeat steps 1 to 2 to find the operating value for test points 2, 3 in table 17.
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
84
Reach Value
X 0.8 x (2 x X1 + X0
set
R 0.8 x (2 x R1 + R0
set
+RFPE
set
X 0.5 x (2 x X1 + R0
set
R 0.5 x (2 x R1 +R0
set
RFPE
set
X 0.85 x RFPE
set
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
set
tan(ArgDir=20°)
R 0.8 x RLdFw
set
X 0.17 x (2 x X1
set
R -0.36 x (2 x X1
set
X 0.27 x (2 x X1
set
R –0.57 x (2 x X1
set
X 0.5 x (2 x X1
set
R 0.5 x (2 x R1
set
X 0
R RFPE
14 and table 17. Compare the result of the measurement with the set value.
15 and table 18.
Comments
)/3
set
)/3
set
)/3
set
)/3 +
set
x tan(ArgLdset) ArgLd = angle for the maximal load transfer
Exact: 0.4 x RFPE x tan (ArgDir=20°)
set
x
+ X0 ) Exact: 0.5 x (2 x X1
set
+ X0 ) Exact: 0.5 x (2X1
set
tan(AgNegDir=30°)
+X0 ) Exact: 0.8 x (2 x X1
set
+ X0 ) Exact: 0.8 x (2X1set + X0set)/(3 x
set
tan(AgNegDir=30°)
+ X0 )/3
set
+ R0 )/3
set
Only used when RLdFw > RFPE
1MRK 505 345-UEN B
X0 )/3
set set
+ X0 )/(3 x
set set
+ X0 )/3
set set
M14944-126 v8
Commissioning manual