Section 4 Starting up
4.1 Factory and site acceptance testing
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T
esting 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
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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 505 378-UEN A Section 4
Starting up
Line differential protection RED670 2.2 IEC 47
Commissioning manual
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