... three- and five-limb cores to perform simultaneously testing of the phase -to- earth and phase -to- phase insulation with 1,0 p.u.(per unit) and 1,5 p.u. respectively.The choice of winding to which ... 4: Guide to the lightning impulse and switching impulse testing –Power transformers and reactorsNuméro de référenceReference numberCEI/IEC 60076-4:2002COPYRIGHT 2002; International Electrotechnical ... transferred to a non-tested winding.The sum of items a), c) and d) or of items b), c) and d), is sometimes referred to as linecurrent.When testing reactors, both of the shunt and series types,...