6.8.1
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.
This section contains instructions on how to test the synchrochecksynchronism check
and energizing check for single CB with or without the synchronizing function.
Prepare the IED for verification of settings as outlined in
.
Values of the logical signals for SESRSYN (25) are available on the local HMI under
Main menu/Tests/Function status/Control/SESRSYN(25,SYNC)/X:SESRSYN
.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
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
50 Hz but can be directly applicable to 60 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
shows the general test connection principle, which can be used during
testing. This description describes the test of the version intended for one bay.
1MRK 506 331-UUS A
Section 6
Testing functionality
103
Commissioning Manual
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