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1MRK 506 331-UUS A
3.7
Commissioning Manual
After writing an application configuration to the IED, the IED makes an application
restart or a complete IED restart, when necessary.
The IED does not restart after reconfiguring IEC61850 (regardless of
whether the protocol is enabled or disabled).
Be sure to set the correct technical key in both the IED and PCM600 to
prevent writing an application configuration to a wrong IED.
See the engineering manual for information on how to create or modify
an application configuration and how to write to the IED.
Checking CT circuits
Check that the wiring is in strict accordance with the supplied
connection diagram.
•
Primary injection test to verify the current ratio of the CT, the correct wiring up to
the protection IED and correct phase sequence connection (that is A, B, C.)
•
CT secondary loop resistance measurement to confirm that the current transformer
secondary loop DC resistance is within specification and that there are no high
resistance joints in the CT winding or wiring.
•
Grounding check of the individual CT secondary circuits to verify that each three-
phase set of main CTs is properly connected to the station ground and only at one
electrical point.
•
Insulation resistance check.
CT and VT connectors are pre-coded, and the CT and VT connector
markings are different. For more information, see the installation manual.
Both the primary and the secondary sides must be disconnected from
the line and the IED when plotting the excitation characteristics.
Section 3
Starting up
31
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