... KCIM-()/()-()-() 1 2 3 4 1.function lectotype L:return circuit insulation on line monitor I:insulator on ... line monitor S:vacuum switch on line monitor F1:L+A model, circuit and insulation of arrester on ... line monitor F2:L+I model, circuit and insulation of insulator on ... of circuit,insulator and arrestor on line monitor F4:L+A+I+S model, insulation of circuit,insulator ...