Completing The Test; Control; Synchrocheck, Energizing Check, And Synchronizing Sesrsyn - ABB RET670 Commissioning Manual

1MRK 504 165-UEN A
11.9.3.1
11.10
11.10.1
Transformer protection RET670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection

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
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 = 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.
The description below applies for a system with a nominal
frequency of 50 Hz but can be directly applicable 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 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.
Figure 52 shows the general test connection for a 1½ breaker diameter with one-
phase voltage connected to the line side.
Section 11
GUID-38A57549-E6BF-46CB-ADFB-79305684EB67 v1
SEMOD53560-1 v1
M2377-3 v12
"Preparing the IED
227