electricpy.fault.toctriptime¶

electricpy.fault.toctriptime(I, Ipickup, TD, curve='U1', CTR=1)[source]¶

Time OverCurrent Trip Time Function.

Time-OverCurrent Trip Time Calculator, evaluates the time to trip for a specific TOC (51) element given the curve type, current characteristics and time-dial setting.

Parameters:¶

I : float¶

Measured Current in Amps

Ipickup : float¶

Fault Current Pickup Setting (in Amps)

TD : float¶

Time Dial Setting

curve : string, optional¶

Name of specified TOC curve, may be entry from set: {U1,U2,U3,U4,U5,C1,C2,C3,C4,C5}, default=U1

CTR : float, optional¶

Current Transformer Ratio, default=1

Returns:¶

tt – Time-to-Trip for characterized element.

Return type:¶

float