Technical Guide

Technical Guide

  • What is the difference between a voltage transformer and a current transformer?

    What is the difference between a voltage transformer and a current transformer?

    What is the difference between voltage transformers and current transformers in terms of their working principles?                                                                                                                                                                           HV HIPOT GDP...
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  • How to solve the overvoltage problem of the frequency  AC  resonant test system ?

    How to solve the overvoltage problem of the frequency AC resonant test system ?

    The frequency AC resonant test system is used to identify the insulation strength of electrical equipment. It is of decisive significance for judging whether the electrical equipment can be put into operation. It is also an important means to ensure the insulation level of the equipment and avoid...
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  • What is transformer winding frequency response?

    What is transformer winding frequency response?

    Transformer winding deformation refers to the irreversible changes in the size and shape of the winding under the action of machinery and electricity. It includes changes in axial and radial dimensions, body displacement, winding twist, bulging and inter-turn shorts, etc. The reason is that the t...
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  • Precautions for  Oil Chromatography Analyzer

    Precautions for Oil Chromatography Analyzer

                                                                                                                        HV HIPOT GDC-9560B Power system Insulation Oil Gas Chromatography Analyzer Installation and removal of chromatographic column: 1. The installation and removal of the chromatographic...
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  • Application of Power Quality Analyzer

    Application of Power Quality Analyzer

    In the actual test and analysis of the power quality of the power grid, a power quality analyzer is needed. This device is widely used in the measurement of power quality and is very popular among electric power workers. In this article, HV Hipot will give a brief introduction for this equipment ...
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  • The features and functions about HV HIPOT CT/PT Analyzer

    The features and functions about HV HIPOT CT/PT Analyzer

    HV HIPOT GDHG-201A Transformer Comprehensive CT/PT Analyzer (transformer frequency conversion volt-ampere characteristic tester) is a special testing instrument used for relay protection and high voltage insulation to test protection current transformers and protection voltage transformers. The i...
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  • Problems in the test site of the loop resistance tester

    Problems in the test site of the loop resistance tester

    When the loop resistance tester (also called the contact resistance tester) designed according to the traditional design principle was tested in the field, it was found that there was a common problem. When the voltage connection circuit of the tester is in poor contact or open circuit, the teste...
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  • The Importance of Precautionary Tests in Electrical Equipment Operation

    In order to reduce accidents and prevent accidents, the cables in operation should be regularly subjected to preventive withstand voltage tests. The DC withstand voltage test standard of the cable can refer to the relevant cable operation regulations. In principle, the DC withstand voltage test c...
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  • Dry-type test transformer use steps

    Dry-type test transformer use steps

    Dry-type test transformers play an obvious role in high-voltage test tests, and are one of the most frequently used instruments and equipment by the majority of testers. The author of HV HIPOT will introduce the standardized test steps of dry-type test transformers to help you improve the test an...
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  • How dose the Digital Grounding Down Lead Earth Continuity Tester Work ?

    How dose the Digital Grounding Down Lead Earth Continuity Tester Work ?

    GDDT-10U gDigital Grounding Down Lead Earth Continuity Tester is a highly automated portable tester developed by our company. It is used to measure the continuity resistance value between the grounding down conductors of various power equipment in the substation. The instrument is controlled by a...
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  • Why transformers need do high voltage withstand test?

    Why transformers need do high voltage withstand test?

    When the transformer operates in the power grid, it not only has to bear the action of voltage and current in normal operation, but also bear the action of various short-term abnormal voltage and current. Therefore, the transformer must be designed and manufactured to have sufficient safety and r...
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  • What is Transformer No-load test ?

    What is Transformer No-load test ?

    The no-load test of the transformer is a test to measure the no-load loss and no-load current of the transformer by applying the rated voltage of the rated sine wave rated frequency from the winding on either side of the transformer, and the other windings are open-circuited. The no-load current ...
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