ABB REL670 Installation And Commissioning Manual page 104

Test point Value
7
= − ⋅
X 0.8 (2
R=0.8· RLdFw
8
= − ⋅
X 0.2 (2
R=0.8· RLdFw
9 X=0.2· X1
= ⋅
R 0.2 X 1 tan(
10 X=0.8·X1
= ⋅
R 0.2 X 1 tan(
11 X=-0.5· RFFwPP ·tan (AngDir)
R=0.5·RFFwPP
5.2.1
96
Distance protection
− ⋅
3) RLdFw
− ⋅
3) RLdFw
⋅ −
ArgNegDir 90)
⋅ −
ArgNegDir 90)
The table showing test points for three phase loops is used together with
Measuring the operate limit of set values
Procedure
1. Supply the terminal with healthy conditions for at least two seconds.
2. Apply the fault condition and slowly decrease the measured imped-
ance to find the operate value for of the phase to earth loop L3, test
point P1, according to
ment with the expected value according to
The corresponding binary signals that inform about the operation of the
phase-selection measuring elements are available in the local HMI under
the menu:
Measurements/Monitoring/Current phasors
and
Comments
≈ −
X 0.214 RLdFw
≈ −
X 0.054 RLdFw
≈
R 0.093
≈
R 0.373
Note! This test points is proposed to be used instead of
point 4, 5, 6 and 7 when shaped load characteristic is not
activated (OperationLdCmd=OFF)
figure . Compare the result of the measure-
table
Verifying settings by secondary
⋅
⋅
⋅
X set 1
⋅
X 1
figure 30.
30.
Chapter 11
injection