... :1) Porcelain or glass insulators for low & medium or high voltage2) Voltage: 0.4KV~132KV3) The disc suspension insulator can ... -3,56-4,56-5Pin Type Insulator for low & medium voltage lines (ANSI): 55-1,55-2,55-3,55- ... J,st-20/J,p-20-DType insulators for high voltage (AS): LP,LV,SLP11/180,ALP11/275,ALP22/ ... /520,ALP22/920 c. Post insulatorsPost insulators for high voltage lines (ANSI): 57-1s,57-2s,57-3s,57 ...