ABB Relion 670 Series Commissioning Manual page 127

1MRK 505 372-UUS Rev. K
10.9 Control
10.9.1 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 as outlined in section
for test" in this chapter.
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.
Figure 17
describes the test of the version intended for one bay.
Figure 18
connected to the line side.
Busbar protection REB670
Commissioning manual
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.
shows the general test connection principle, which can be used during testing. This description
shows the general test connection for a breaker-and-a-half diameter with one-phase voltage
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Testing functionality by secondary injection
"Requirements" and section
Section 10
SEMOD53560-1 v2
M2377-3 v12
"Preparing
121