1)按安装地点分。户内式和户外式。 1) according to the installation site. Indoor type and outdoor type. (2)按用途分。计量用、测量用、保护及自动装置用。 (2) according to the purpose. Measurement, measuring, protection and automatic device. (3)按工作原理分。电压互感器有电磁式和电容分压式( TVC);保护用电流互感器有普通保护型( P级)和暂态保护特性型 (TP 级)。 (3) according to the working principle of the points. With electromagnetic voltage transformer and capacitor pressure type (TVC); Protective current transformer with ordinary protected (P) and transient protection feature type (TP). (4)按结构形式分。电压互感器有不接地式、接地式、单极式和串级式;电流互感器有正立式、倒立式、母线式、贯穿式、套管式等。 (4) points in the form of the structure. Voltage transformer has no grounding type, grounding type, single type and cascade type; Current transformer is vertical, inverted, bus type, through type, bushing, etc. (5)按绝缘介质分。油绝缘、气体( SF6)绝缘和树脂浇注绝缘等。 (5) by insulating medium. Insulation oil, gas (SF6) insulation and casting resin insulated, etc. (6)按组合方式分。由电流互感器和电压互感器两元件组合在一起装在一外壳内，构成一种特殊用途的组合式互感器。 (6) according to the combination. By current transformer and voltage transformer inside two components together in a shell, constitute a kind of special use combined transformer.