Current Transformer LZZBJ9-10 is made indoor cast-resin insulated, totally- enclosed structure. It's designed for current, power measurement and relay ... has a leg type, totally-enclosed structure and its ring core, primary winding and secondary winding are casted resin insulated. ... primary P1 ,P2,secondary group on 1S1, 1S2, group two2S1,2S2.As the primary current flow from P1 toP2, the secondary ...