7. After more than 5 seconds increase the measured voltage back to the value slightly
below VSealIn level. MAINFUF signal should not reset.
8. Slowly increase measured voltage to the value slightly above VSealIn until
MAINFUF signal resets.
9. Record the measured voltage and compare with the set value VSealIn.
13.9.3.1 Completing the test
GUID-38A57549-E6BF-46CB-ADFB-79305684EB67 v1
Continue to test another function or end the test by changing the TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were
changed for testing purposes.
13.10 Control
SEMOD53560-1 v1
13.10.1 Synchrocheck, energizing check, and synchronizing
SESRSYN (25)
M2377-3 v12
This section contains instructions on how to test the synchrochecksynchronism check,
energizing check, and synchronizing function SESRSYN (25) for single, double and
breaker-and-a-half arrangements.
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to
verify settings".
At commissioning and periodical checks, the functions shall be tested with the used
settings. To test a specific function, it might be necessary to change some setting
parameters, for example:
• AutoEnerg = Disabled/DLLB/DBLL/Both
• ManEnerg = Disabled
• Operation = Disabled/Enabled
• Activation of the voltage selection function if applicable
The tests explained in the test procedures below describe the settings, which can be
used as references during testing before the final settings are specified. After testing,
restore the equipment to the normal or desired settings.
A secondary injection test set with the possibility to alter the phase angle and
amplitude of the voltage is needed. The test set must also be able to generate different
frequencies on different outputs.
1MRK 502 073-UUS A Section 13
Testing functionality by secondary injection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 247
Commissioning manual
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