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Section 10
Testing functionality by secondary injection
10.9.3.1
10.10
10.10.1
194
6.
Decrease one of the three-phase voltages on main fuse group. The voltage change
must be greater than the set value for Ud>MainBlock. MAINFUF signal is
activated.
7.
After more than 5 seconds increase the measured voltage back to the value
slightly below USealIn level. MAINFUF signal should not reset.
8.
Slowly increase measured voltage to the value slightly above USealIn until
MAINFUF signal resets.
9.
Record the measured voltage and compare with the set value USealIn.
Completing the test
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.
Control
Synchrocheck, energizing check, and synchronizing
SESRSYN
This section contains instructions on how to test the synchrocheck, energizing check,
and synchronizing function SESRSYN for single, double and 1½ breaker
arrangements.
Prepare the IED for verification of settings outlined in section
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 = Off/DLLB/DBLL/Both
•
ManEnerg = Off
•
Operation = Off/On
•
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 506 355-UEN A
"Preparing the IED to
Line distance protection REL670 2.1 IEC
Commissioning manual
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