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Slope Calculations For Three Winding Trafos

Slope Calculations For Three Winding Trafos

Slope Calculations For Three Winding Trafos

(OP)
In relation to thread238-245515: Differential Slope Calculation, I would appreciate if someone may post a sample calculation or link on how to calculate the Slope 1 and Slope 2 settings of a transformer differential relay for a three winding transformer with consideration to the transformer on-load tap changer.

RE: Slope Calculations For Three Winding Trafos

Whats a "Trafo" ?
Is it the same as a Xfmr?

RE: Slope Calculations For Three Winding Trafos

(OP)
Yes, sorry for the confusion.

RE: Slope Calculations For Three Winding Trafos

Hi Nightfox.
It's theoretical Q or you have yet type of relay?
Bias or restraint current calculation depend on the relay mnf.
Best Regards.
Slava

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