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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
Off.
Residual overvoltage release and protection
SEMOD175060-131 v6
Procedure
1.
Measure that the operate voltage is equal to the
UN> setting.
The function activates the START and STUN signals.
2.
Measure the operate time by injecting a voltage 1.2 times set
UN> operate value.
3.
Compare the result with the set
tUN operate value.
4.
Inject a voltage 0.8 ·
UNRel> and a current high enough to operate the directional
function at the chosen angle.
5.
Increase the voltage until the directional function is released.
6.
Compare the measured value with the set
UNRel> operate value.
12.5.6.2
Completing the test
SEMOD175060-148 v4
Continue to test another function or end the test by changing the
TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.5.7
Thermal overload protection, one time constant, Celsius/
Fahrenheit LCPTTR/LFPTTR
M14950-2 v7
Prepare the IED for verification of settings as outlined in section
in this chapter.
Check that the input logical signal BLOCK is logical zero and that on the local HMI, the logical
signal TRIP, START and ALARM are equal to logical zero.
12.5.7.1
Measuring the operate and time limit of set values
M14950-8 v3
Testing the protection without external temperature compensation (NonComp)
M14950-10 v10
12.5.7.2
Completing the test
M14950-48 v5
Continue to test another function or end the test by changing the
TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.5.8
Thermal overload protection, two time constants TRPTTR
SEMOD53632-3 v5
Prepare the IED for verification of settings as outlined in section
in this chapter.
12.5.8.1
Checking operate and reset values
SEMOD53632-11 v7
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
163
Commissioning manual