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 (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、 Principle of efficient three-phase synchronous measurementThree phase synchronous power on and independent samplingBy designing a dual power supply structure, a current (such as 20A) is applied to the three-phase winding of the YN connected transformer, and real-time data is collected using an i
1、 Core host componentsIntelligent cable fault testerFunction: Fault pre positioning is performed through low-voltage pulse method (measuring low resistance faults) and high-voltage flashover method (measuring high resistance faults), measuring the approximate distance of the fault point, the total
1、 Distance measurement principle (rough measurement of fault distance)Pulse reflection methodPrinciple: Inject low or high voltage pulse signals into the cable, and when the pulse encounters a fault point (impedance jump point, such as short circuit, open circuit, or high resistance fault), a refl
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