Current transformers are sized so as not to be saturated by the current values they
are required to measure accurately (minimum 5 In).

For overcurrent protection functions

• with DT tripping curve: the saturation current must be 1.5 times greater than the setting
• with IDMT tripping curve: the saturation current must be 1.5 times greater than the highest working value on the curve.

Released for:Schneider Electric United Arab Emirates