ABB RELION 620 Series Technical Manual page 599

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1MAC504801-IB E

620 series ANSI

Technical Manual

GUID-8DC3B17A-13FE-4E38-85C6-A228BC03206B-ANSI V2 EN

Connection diagram for current circuit supervision with two sets of three-

phase current transformer protection cores

When using the measurement core for reference current measurement, it

should be noted that the saturation level of the measurement core is much

lower than with the protection core. This should be taken into account

when setting the current circuit supervision function.

Supervision functions

Other protection devices

Chapters

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