When using a DC resistance tester for testing, the following precautions should be taken:1. Ensure safety:Before conducting the test, it is necessary to ensure that the testing instrument and the tested circuit are disconnected and the power supply is disconnected. Ensure that no voltage or current passes through the tested…

Cable fault tester is a professional equipment used to detect and locate faults in power cables, such as short circuits, open circuits, insulation damage, etc. It achieves rapid positioning and judgment of cable faults by utilizing electromagnetic wave propagation characteristics and reflection phenomena, combined with specific testing techniques and signal…

The generator rotor AC impedance tester is a specialized instrument used to test the AC impedance of the generator rotor, used to detect the insulation condition and performance of the generator rotor. The following will introduce the functions and operating precautions of the tester.Function:AC impedance test: Calculate the AC impedance…

The dielectric strength test of insulating oil is a test method used to measure the dielectric strength of insulating oil, which can evaluate the insulation performance of insulating oil in electrical equipment. The dielectric strength tester for insulating oil is a specialized device that generates breakdown phenomenon in insulating oil…

When the transformer trips automatically, it is necessary to first confirm the cause and condition of the trip before proceeding with the treatment. The following are some common methods and steps for handling automatic tripping of transformers:① Confirm the cause of the trip: Check the circuit and equipment to determine…

The frequency conversion series resonance testing device is a specialized equipment used for frequency conversion resonance testing of large capacity transformers and transformers in high-voltage power systems. It can be used to determine the insulation level and performance of transformers and transformers under power frequency voltage. The selection of frequency…

Dielectric loss tester is a novel method for measuring the tangent value of dielectric loss angle (tg δ） Intelligent instrument with capacitance value (Cx). It is possible to measure the dielectric loss tangent (tg) of various insulation materials, insulation sleeves, power cables, capacitors, transformers, and other high-voltage equipment on site…

Relay protection calibrator is a commonly used tool in power systems, mainly used for testing, verifying, and debugging various relay protection devices. This equipment plays an important role in the safe and stable operation of the power system, therefore it is very important in the construction and operation of the…

The transformer ratio group tester is a test item that must be carried out after the handover and overhaul of transformers. The main purposes of making a variable ratio group tester are as follows:① Check if the transformation ratio matches the nameplate to ensure correct voltage transformation.② Check if the…

The fully automatic transformer ratio tester is an innovative product that overcomes the shortcomings of traditional transformer ratio bridge testing. The screen adopts a large screen high-resolution LCD screen, and the power supply adopts lithium battery power supply, which is convenient for on-site use. Mainly used for transformer ratio group…