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Advantages of cable for AC withstand voltage test
2019-07-11With the development of the national economy and the increase of the power supply voltage level of the city network, the XLPE insulated power cable (XLPE) has been acquired at home and abroad for its reasonable process and structure, excellent electrical performance and safe and reliable operation… -
Classification of pressure test and equipment selection
2019-07-09For electrical equipment, especially high-voltage electrical equipment, insulation performance tests shall be carried out after a period of time or operation. Detect its electrical insulation properties. In accordance with the provisions of the International "Procedures for Preventive Testing of Electrical Equipment": 1. The phase-separated… -
Measurement of insulation resistance of high voltage equipme
2019-07-09For electrical equipment, especially high-voltage electrical equipment, insulation performance tests shall be carried out after a period of time or operation. Detect its electrical insulation properties. In accordance with the provisions of the International "Procedures for Preventive Testing of Electrical Equipment": 1. The phase-separated insulation… -
How current transformers work
2019-07-08In the supply and supply of electricity, the current varies greatly, ranging from a few amps to tens of thousands of amps. In order to facilitate the measurement of instruments and meters, it is necessary to convert to a relatively uniform current, and the voltage on the… -
Why use a large current to measure the loop resistance of th
2019-07-03Power System Many high-current electrical equipment requires accurate measurement of the resistance of the circuit during preventive testing and handover tests. The circuit breaker is an important electrical equipment for the power system. The national standard GB763, GB50150 and the power industry standard DL/T596 have specified… -
Basic knowledge of transformers
2019-07-03Transformers are used in almost all electronic products. The principle is simple, but depending on the application (different applications), the winding process of the transformer will have different requirements. The functions of the transformer mainly include: voltage conversion; impedance transformation; isolation; voltage regulation (magnetic saturation transformer),… -
How to use the clamp phase meter correctly
2019-07-03The clamp phase meter is a simple and commonly used direct reading instrument for measuring high resistance. It can be used to measure the insulation resistance of circuits, motor windings, cables, electrical equipment, etc. There are three terminals on the megohmmeter marked with grounding (N), circuit (U)… -
What are the advantages of relay protection tester?
2019-07-01If oneself buy relay protection tester in time, don't even know its specific advantages, believe in the whole also can appear all sorts of problems when using, even said at the time of use, due to some problems not understand, and lead to its performance, then relay… -
How to use transformer ratio tester?
2019-07-01After purchasing the transformer ratio tester , it is not only necessary to know how to repair it, but also how to use it. Only in this way can it have a very good detection effect in the whole process of use and have a very… -
CT Volt-ampere characteristic tester
2019-06-28Our CT Volt-ampere characteristic tester ZC-102F imported core devices and strict manufacturing process to ensure stable and reliable product performance. The instrument panel adopts ergonomic design, easy to operate, one person can complete all the testing work. The software has powerful functions, automatically calculates and gives the…




