The testing principle of insulation resistance tester (also known as megohmmeter, shake meter) is based on Ohm's law (R=V/I), which calculates the resistance value of insulation material by applying DC high voltage and measuring leakage current, in order to evaluate its insulation performance. T

1、 Ensure the safety and reliable operation of equipmentPrevent overload riskAccurately measuring the actual capacity of a transformer can avoid its long-term overload operation. Overload can cause abnormal temperature rise in the winding, accelerate insulation aging, and even lead to fire or explo

1、 Core functionsHigh voltage electrical testingNon contact electrical testing: When the bare wire voltage exceeds a specific threshold (such as 60kV or 110kV), there is no need to touch the line, and the instrument can determine the charged state through induced electric field. When approaching th

1. Grounding protection of power systemSubstation and transmission lines:Test the resistance value of grounding electrodes for equipment such as transformers, lightning arresters, and iron towers to ensure that lightning strikes or fault currents can be safely introduced into the ground, avoiding eq