11.9.3.1 Completing the test
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.
11.10 Control
11.10.1 Synchrocheck, energizing check, and synchronizing SESRSYN
(25)
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.
The description below applies for a system with a nominal frequency of 60
Hz but can be directly applicable to 50 Hz. SESRSYN (25) can be set to
use different phases, phase to ground or phase to phase. Use the set
voltages instead of what is indicated below.
Figure 51 shows the general test connection principle, which can be used during testing.
This description describes the test of the version intended for one bay.
Section 11 1MRK 504 165-UUS -
Testing functionality by secondary injection
236 Transformer protection RET670 2.2 ANSI
Commissioning manual
To Next Page
Loading...
Need help?
General
