Reasons for Partial Discharge Detection in Switchgear

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1、 The essence and harm of partial dischargeEarly characterization of concealed insulation defectsPartial discharge occurs inside the insulation system (such as bubbles, impurities, cracks), and non penetrating discharge occurs when the electric field strength exceeds the local breakdown field stre

Why Is It Necessary to Test the Kinematic Viscosity of Petroleum

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1、 Ensure product performance and equipment safetyLiquidity control and transportation efficiencyThe fluidity of petroleum products directly affects pumping, pipeline transportation, and atomization effects. Excessive viscosity can lead to increased transportation resistance, increased energy consu

Why Do Transformers Need to Undergo Factory Testing

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1、 Quality assurance and defect investigationIdentification of process and material defectsThrough routine tests such as DC resistance measurement and transformation ratio testing, problems such as winding breakage, inter turn short circuit, poor welding, and inconsistent wire specifications can be

Why Do Circuit Breakers Need to Undergo Switch Characteristic Testing

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1、 Ensure the timeliness and accuracy of fault removalAccuracy of opening and closing time and speedIf the opening time of the circuit breaker (the time from the instruction to the complete separation of the contacts) is too long, it will cause the short-circuit current to continue flowing, leading

The Testing Principle of Insulation Resistance Tester

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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