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1MRK 511 366-UUS -
Commissioning manual
The function activates the PICKUP and PUDIRIN outputs.
3.
Assume that φ´ is the phase angle between injected voltage (3V
i.e. φ´ = RCADir-φ. Change φ´ to for example 45 degrees. Increase the injected
current until the function trips.
4.
Compare the result with the set value and make sure that the new injected 3I
cos φ is equal to the setting SN_PU. Take the set characteristic into consideration,
see figure
28
and figure 29.
5.
Measure the trip time of the timer by injecting 1.2 · VNRelPU and a current to get two
times the set SN_PU trip value.
=
TDSN SRef 3
⋅
Tinv
ANSIEQUATION2403 V2 EN
6.
Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7.
Continue to test another function or complete the test by setting the test mode to
Disabled.
Operation mode 3I
0
1.
Set the polarizing voltage to 1.2 · VNRelPU and set the phase angle between voltage
and current to the set characteristic angle (RCADir). Note that the current lagging the
voltage.
2.
Inject current until the function picks up, and make sure that the trip current is equal
to the INRelPU setting for the set directional element.
Note that for pickup, both the injected current and voltage must be
greater than the set values INRelPU and VNRelPU respectively.
The function activates the PICKUPand PUDIRIN output.
Measure with angles j around RCADir +/- ROADir.
3.
4.
Compare the result with the set values, refer to figure
5.
Measure the trip time of the timer by injecting a current to get two times the set
SN_PU trip value.
=
TDSN SRef 3
⋅
Tinv
ANSIEQUATION2403 V2 EN
6.
Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7.
Continue to test another function or complete the test by setting the test mode to
Disabled.
Testing functionality by secondary injection
( )
⋅
3
⋅
cos ϕ
I
V
0
test
0
test
and φ
( )
⋅
3
⋅
cos ϕ
I
V
0
test
0
test
Section 11
) and current (3I
0
· 3V
0
(Equation 78)
30
for example characteristic.
(Equation 79)
)
0
·
0
131
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