... real or front side.Main Specifications Input signals: 1.Analog channels: 32-96;Evt channels:64-384 2.Normal ... trig type: Over, under, window trig, ROC trig; Harmonic, single phase P,Q, 3 phases P,Q, frequency, Positive sequence voltage ... , Negative sequence voltage, Zero sequence voltage, difference of phase angle etc. Protection relay trig type:Generator percentage differential relayGenerator ...