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Bus Differential Relay Settings

Bus Differential Relay Settings

Bus Differential Relay Settings

(OP)
Has anyone ever seen an on-line calculator or simple spreadsheet used to calculate settings for bus differential relays in switchgear?

RE: Bus Differential Relay Settings

There generally isn't much to set.  The differential has nothing to coordinate with so you're just trying to avoid nuisance tripping due to CT error and saturation on external faults.

With high impedance bus diff, the saturation problems are dealt with in the design of the relay to a great extent.

What type of relay are you using??

RE: Bus Differential Relay Settings

(OP)
ABB KAB relays protecting double-ended 5kV swgr.

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