ABB Relion 670 series, Installation And Commissioning Manual

Page: 219 / 260

15.11 Control
15.11.1 Synchrocheck, energizing check, and synchronizing
SESRSYN
This section contains instructions on how to test the synchrocheck, energizing
check, and synchronizing function SESRSYN for single and double CB and for 1½
breaker arrangements.
This section contains instructions on how to test the synchrocheck and energizing
check for single CB with or without the synchronizing function.
Prepare the IED for verification of settings outlined in section "Overview" and
section "Preparing 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 = On / 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 individually 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 transferred to 60 Hz.
SESRSYN can be set to use different phases, phase to earth or
phase to phase. Use the set voltages instead of what is indicated below.
Figure 102 shows the general test connection principle, which can be used during
testing. This description describes the test of the version intended for one bay.
Figure 103 shows the general test connection for a 1½ breaker diameter with one-
phase voltage connected to the line side.
1MRK 502 029-UEN A
Section 15
Verifying settings by secondary injection
213
Installation and commissioning manual