Re: [PSES] reducing of OVC

Hello Boštjan: I would use a 1:1 transformer with a grounded shield between primary and secondary. The transformer core will saturate with differential mode transients thus reducing the differential mode transients in the secondary. The shield will eliminate the capacitance between primary an

[PSES] reducing of OVC

Dear experts, We have an IT product intended for connection to OVC IV (6kV transients). Input filter also comprises two IEC 61051-2 certified varistors (L to middle point, N to middle point) and one GDT (middle point to PE). Annex G of IEC 60950-1 is saying that we need to measure transient vol