Fig. 4From: Towards a standardisation for digital inputs and outputs of protection functions in IEC 60255 seriesCopyright © 2016 IEC Geneva, Switzerland. www.iec.chExample of a MU transfer function for metering accuracy class 1(fr = 60 Hz, fs = 4 800 Hz) according to IEC 61869-6:2016 [3].Back to article page