6.6.3.2 Completing the test
Continue to test another function or end the testing by setting the parameter TestMode
to Off under Main menu/Tests/IED test mode/TESTMODE:1. If another function
is tested, then set the parameter Blocked to No under Main menu/Tests/Function test
modes/Voltage/ROV2PTOV(59N,2UN>)/ROV2PTOV:1 for the function, or for
each individual function in a chain, to be tested next. Remember to set the parameter
Blocked to Yes, for each individual function that has been tested.
6.6.4 Overexcitation protection OEXPVPH
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to
verify settings".
Values of the logical signals for OEXPVPH are available on the local HMI under
Main menu/Tests/Function status/Voltage/OEXPVPH(24,U/f>)/OEXPVPH:1.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
6.6.4.1 Verifying the settings
1. Enable function.
2. Connect a symmetrical three-phase voltage input from the test set to the
appropriate connection terminals of the overexcitation protection OEXPVPH.
OEXPVPH is conveniently tested using rated frequency for the injection voltage
and increasing the injection voltage to get the desired overexcitation level.
3. Connect the alarm contact to the timer and set the time delay tAlarm temporarily
to zero.
4. Increase the voltage and note the operate value V/Hz>.
5. Reduce the voltage slowly and note the reset value.
6. Set the alarm time delay to the correct value according to the setting plan and
check the time delay, injecting a voltage corresponding to 1.2 · V/Hz>.
7. Connect a trip output contact to the timer and temporarily set the time delay tMin
to 0.5s.
8. Increase the voltage and note the V/Hz>> operate value
9. Reduce the voltage slowly and note the reset value.
10. Set the time delay to the correct value according to the setting plan and check the
time delay tMin, injecting a voltage corresponding to 1.2 · V/Hz>>.
11. Check that trip and alarm contacts operate according to the configuration logic.
12. Finally check that START and TRIP information is stored in the event menu.
6.6.4.2 Completing the test
Continue to test another function or end the testing by setting the parameter TestMode
to Off under Main menu/Tests/IED test mode/TESTMODE:1. If another function
is tested, then set the parameter Blocked to No under Main menu/Tests/Function test
1MRK 502 049-UEN A Section 6
Testing functionality
85
Commissioning manual
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