ABB RELION 620 Series Technical Manual page 588

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Protection functions

in any busbar section, the difference current is no longer zero and the protection

GUID-5F359CB5-4F4F-4803-B5B5-6859F1CB17F5 V1 EN

Differential protection on busbar with bus coupler (Single-phase

representation)

Example calculations for busbar high-impedance differential protection

The protected object in the example for busbar differential protection is a single-bus

system with two zones of protection.

1MRS757644 F

Technical Manual

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