脉冲电流法是当前普遍认可且广泛使用的一种局部放电量测试方法，其结果是以pC为单位的视在放电量，属于定量性质的测量，能客观反映电气设备的绝缘状态。

局放在线监测装置采用超低功耗设计，抗干扰能力强，可在线校准；兼备三相带电显示功能，LED显示开关柜是否带电，免维护功耗低，可核相且核相电压。

The pulse current method is currently a universally recognized and widely used partial discharge measurement method. The result is the apparent discharge in pC, which is a quantitative measurement and can objectively reflect the insulation state of electrical equipment.

The local on-line monitoring device adopts ultra-low power consumption design, strong anti-interference ability, and can be calibrated online; it also has a three-phase live display function, LED displays whether the switch cabinet is live, maintenance-free, low power consumption, verifiable phase and low phase voltage.