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Section 11
Testing functionality by secondary injection
132
ANSI06000652 V2 EN
Figure 30:
Example characteristic
Non-directional ground fault current protection
Procedure
1.
Measure that the trip current is equal to the INNonDirPU setting.
The function activates the PICKUP and PUDIRIN output.
2.
Measure the trip time of the timer by injecting a current of 200% of the trip value.
3.
Compare the result with the expected value.
The expected value depends on whether definite time tINNonDir or inverse time was
selected.
4.
Continue to test another function or complete the test by setting the test mode to
Disabled.
Residual overvoltage release and protection
Procedure
1.
Measure that the trip voltage is equal to the VN_PU setting.
The function activates the PICKUP and PUVN signals.
2.
Measure the trip time by injecting a voltage 1.2 times set VN_PU trip value.
3.
Compare the result with the set tVN trip value.
RCA = 0º
ROA = 80º
Operate area
3I
0
V
=-3V
ref
ANSI06000652-2-en.vsd
1MRK 511 366-UUS -
0
Commissioning manual
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