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  • Short Circuit Voltage of Transformer

    Short Circuit Voltage of Transformer

    Weshine® Short Circuit Voltage of Transformer,Transformer LV Short-circuit Impedance Tester is not provided with an external voltage regulator and adopts the primary connection mode. It begins the three-phase testing and calculates impedance error percentage automatically when the parameter is entered and provides intuitive results. This is a rapid tester which detects winding deformation of transformers on site.
  • Interfacial Tension Between Oil and Water

    Interfacial Tension Between Oil and Water

    Weshine® Surface Tensiometer for measuring Interfacial Tension Between Oil and Water with CE certificate, high quality and accuracy, Invented and produced according to national standards, complete electric testing solution available. Contact us for more details of Winding Resistance Test of Transformer from Weshine!
  • Underground Cable Fault Distance Locator

    Underground Cable Fault Distance Locator

    Weshine® invented the Underground Cable Fault Distance Locator with CE certificate, high quality and accuracy, Invented and produced according to national standards, complete electric testing solution available. Contact us for more details of Underground Cable Fault Distance Locator from Weshine!
  • Relay Test Set

    Relay Test Set

    Given the different functional requirements of grid protection systems, testing capabilities require a higher level of sophisticated testing hardware and software to analyze the operation of the entire protection system (or individual protection components) under "real life" situations. Similar improvements in simplifying the user interface and software control of test instruments are further necessary to meet these expanding test capabilities. Rest assured, no matter how complex, every aspect of relay testing can be easily handled with Weshine®'s comprehensive line of relay test set (VS-JB900 series). Plus, whether you're testing traditional electromechanical relays or modern IEC 61850 networked devices, our rugged products deliver the high power you need while still being portable for practical testing.
  • Transformer Oil Dielectric Strength Test

    Transformer Oil Dielectric Strength Test

    Weshine® Oil BDV Tester for testing Transformer Oil Dielectric Strength Test with CE certificate, high quality and accuracy, Invented and produced according to national standards, complete electric testing solution available. Contact us for more details of Oil BDV Tester from Weshine!
  • AC Hipot Test Kit

    AC Hipot Test Kit

    Weshine® invented the AC Hipot Test Kit for Dielectric Withstand Test are suitable for 50 / 60 Hz AC testing of low capacity test objects. Optionally, these units can also be upgraded to function as DC test sets by mounting the rectifier attachment on top of the transformer. Weshine® AC Hipot Test Kit for Dielectric Withstand Test with high quality and accuracy, Invented and produced according to national standards, complete electric testing solution available. Contact us for more details of AC Hipot Test Kit for Dielectric Withstand Test from Weshine®!
  • Related Blog
  • Reviews

  • What is the difference between a shorted and open transformer?

    An electrical device called a transformer is used to move electrical energy between circuits. When there is a low-impedance channel between the transformer's primary and secondary windings, the transformer is shorted. An open transformer, on the other hand, happens when there is a high impedance or an open circuit between the transformer's main and secondary windings.

  • What are the operating techniques for Cable Fault Locator?

    ​1. After the cable fault tester has connected the lines on site according to the multiple pulse method, it is normal if a more ideal test waveform cannot be obtained by applying high impact voltage at one time. Because the distance to the fault is not known in advance, the electrical strength of the fault point is also unclear. If the impulse voltage is not high enough and the fault point is not broken down by the impulse high voltage to generate an arc, the fault echo cannot be collected. At this time, only the terminal open circuit waveform can be seen. The impulse voltage must be increased until fault echoes are seen.

  • Application of DC Resistance Tester in practical operation

    ​DC resistance test is an indispensable test item after the transformer is handed over, overhauled and the tap changer is changed. Therefore, it is very important to use a DC resistance tester to test the DC resistance of the transformer. Routine maintenance and good use of the DC resistance tester. The operation is very important for the normal operation of the DC resistance test. Therefore, it is necessary to solve the problems existing in the practical application and management of the DC resistance tester in a timely manner.

  • Development status and trends of integrated substation automation

    The substation is an indispensable and important link in the power system. It is responsible for the heavy tasks of power conversion and power redistribution, and plays a decisive role in the economic operation of the power grid. In order to improve the stable operation level of substations, reduce operation and maintenance costs, improve economic benefits, and provide high-quality electric energy services to users, comprehensive automation technology for substations has begun to emerge and has been widely used.

  • Common technical issues during transformer tester testing

    ​In fact, the accuracy of transformer testers is not an important indicator of the instrument. In the transformer calibration regulations, it is required that the testing error caused by the entire circuit should not exceed 20% of the level of the tested transformer, and the presented data must be true. The common technical issues during the testing process are as follows:

  • The transformer short-circuit impedance tester can perform precise measurements

    The transformer short-circuit impedance tester is a high-precision instrument used for measuring the no-load, load parameters, and zero sequence impedance parameters of transformers. It can accurately measure a series of parameters such as no-load current, no-load loss, short-circuit loss, impedance voltage, harmonic content, distortion rate, etc. of various transformers. It has the advantages of small size, light weight, high measurement accuracy, good stability, and easy operation and learning, which can replace the previous method of using multiple meters to measure transformer losses and capacity.

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