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  • Open and Short Circuit Test of Transformer

    Open and Short Circuit Test of Transformer

    Weshine® Open and Short Circuit Test 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.
  • Open Circuit Test and Short Circuit Test

    Open Circuit Test and Short Circuit Test

    Weshine® Open Circuit Test and Short Circuit Test,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.
  • Cable Fault Locator

    Cable Fault Locator

    Weshine® invented the Cable Fault 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 Cable Fault Locator from Weshine!
  • Insulation Tester 5000V

    Insulation Tester 5000V

    Weshine® invented the Insulation Tester 5000V 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 Insulation Tester 500V from Weshine!
  • Megohm Meter Test

    Megohm Meter Test

    Weshine® invented the Megohm Meter 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 Megohm Meter Test from Weshine!
  • Dielectric Voltage Withstand Test

    Dielectric Voltage Withstand Test

    Weshine® invented the VS-9900 series of Hipot Tester for Dielectric Voltage Withstand Test has been built to provide a cost effective, yet powerful solution to Dielectric Voltage Withstand Test, whether on a production line or in a laboratory environment for compliance testing purposes. With the ability to perform either 5kV AC or 6kV DC dielectric strength tests and up to 500VA AC power output Weshine® VS-9900 series can aid testing to many international safety standards including IEC, EN, UL and CSA to name but a few. With many features, Weshine® Hipot Tester for Dielectric Voltage Withstand Test series ensures testing is performed accurately, efficiently and safely. Contact us for more details of Hipot Tester for Dielectric Voltage Withstand Test from Weshine®!
  • Related Blog
  • Reviews

  • Inspection and identification methods for transformer on-load tap changer (OLTC) faults

    According to statistics, the faults of the on-load voltage regulating switch of the transformer mainly include two aspects: First, the failure of the voltage regulating switch driving mechanism, mainly including the linkage of the electric mechanism, water intrusion into the box, oil leakage from the gear box, insufficient spring energy storage, etc. The second is the failure of the switch body, which mainly includes oil leakage from the oil chamber, loose fasteners, stuck contact motion, and poor contact caused by contact wear. The common fault types of on-load voltage regulating switches are listed and analyzed below.

  • 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.

  • What current is generally selected for a transformer DC resistance tester?

    ​The DC resistance test of transformer windings is an indispensable test item for transformers after handover, overhaul, and change of tap changer. Under normal circumstances, measuring the DC resistance of transformer windings and high-power inductive equipment using traditional methods is a time-consuming and labor-intensive task. To change this situation, shorten measurement time, and reduce the workload of testers, a transformer DC resistance tester can be used.

  • The principle and significance of testing methods for grounding resistance in substations

    ​In recent years, many substations in China have experienced expanded accidents due to lightning strikes. Most of the grounding resistance related to the grounding grid is unqualified, which plays a role in working grounding and protective grounding. When the grounding resistance is too high, a grounding fault occurs, and the neutral point voltage offset increases, which may cause the sound phase and neutral point voltage to be too high, leading to equipment damage and exceeding the required insulation level.

  • What Is a Voltage Withstand Test and Why Is It Critical for Electrical Safety

    A Voltage Withstand Test, often referred to as a dielectric strength test or hi-pot test, is a fundamental procedure used to verify the electrical insulation integrity of equipment, components, and systems. This comprehensive guide explains what a voltage withstand test is, how it works, why it is essential for electrical safety, and how manufacturers such as Weshine apply it to meet global compliance standards. The article also covers test procedures, standards, common failures, comparison with related tests, and best practices, helping engineers, quality managers, and procurement professionals make informed decisions.

  • How To Test Moisture In SF₆ Gas: Methods, Instruments, And Best Practices

    SF₆ delivers insulation and arc‑quenching for GIS and high‑voltage breakers, but excess moisture causes insulation loss, corrosion and toxic by‑products. This guide distinguishes SF₆ moisture testing from leak detection, covering IEC‑aligned procedures, field pitfalls, instrument selection and safety rules. Weshine Electric provides compliant SF₆ test equipment, offering references for power teams’ standardized gas‑quality maintenance.

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