ABB RELION RET670, Commissioning Manual, Page: 51 / 328

Section 4 Starting up
4.1 Factory and site acceptance testing
Testing the proper IED operation is carried out at different occasions, for example:
• Acceptance testing
• Commissioning testing
• Maintenance testing
This manual describes the workflow and the steps to carry out the commissioning testing.
Factory acceptance testing (FAT) is typically done to verify that the IED and its
corresponding configuration meet the requirements of the utility or industry. This test is
the most complex and in depth, as it is done to familiarize the user with a new product or
to verify a new configuration. The complexity of this testing depends on several factors,
such as:
• New IED type
• New configuration
• Modified configuration
Site acceptance testing (SAT or commissioning testing) is typically done to verify that the
installed IED is correctly set and connected to the power system. SAT requires that the
acceptance testing has been performed and that the application configuration is verified.
Maintenance testing is a periodic verification that the IED is healthy and has correct
settings, depending on changes in the power system. There are also other types of
maintenance testing.
4.2 Commissioning checklist
Before starting up commissioning at site, check that the following items are available.
• Single line diagram
• Protection block diagram
• Circuit diagram
• Setting list and configuration
• RJ-45 Ethernet cable (CAT 5)
1MRK 504 165-UUS -
Section 4
Starting up
Transformer protection RET670 2.2 ANSI 45
Commissioning manual