Measuring The Operating Limit Of Set Values - ABB REG670 Commissioning Manual

Section 13
Testing functionality by secondary injection
13.4.2.1
150
Test point Reach Value
8 X –02143 x RLdFwd
R 0.8 x RLdFwd
9 X –0.8 x RLdFw
–0.8 x RLdFwd
tan(ArgDir=20°)
R 0.8 x RLdFwd
10 X 0.17 x (2 x X1
R -0.36 x (2 x X1
11 X 0.27 x (2 x X1
R –0.57 x (2 x X1
12 X 0.5 x (2 x X1
R 0.5 x (2 x R1
13 X 0
R RFPG

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 42 and table 19. Compare the result of the measurement with the set
value.
3. Repeat steps 1 to 2
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
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 six 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
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
set
set
x tan(ArgDir=20°)
set
x
set
set
+ X0 )
set set
+ X0 )
set set
+X0 )
set set
+ X0 )
set set
+ X0 )/3
set set
+ R0 )/3
set set
to find the operating value for test points 2, 3 in table
to find the operating value for the phase-to-ground fault C-G
43 and table 20.
1MRK 502 073-UUS A
Comments
Exact: 0.8 x RFPEZx x tan (ArgDir=20°)
Exact: 0.5 x (2 x X1 X0 )/3
set set
Exact: 0.5 x (2X1 + X0 )/(3 x
set set
tan(AgNegDir=30°)
Exact: 0.8 x (2 x X1 + X0
set set
Exact: 0.8 x (2X1set + X0set)/(3 x
tan(AgNegDir=30°)
GUID-3FA4B640-38E7-406E-8FCC-8DEDABB024C4 v4
Commissioning manual
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