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  • Testeur de perte diélectrique d'huile de transformateur UHV-640

    Le testeur de perte diélectrique d’huile isolante UHV-640 est utilisé pour mesurer la perte diélectrique et la résistivité de l’huile isolante. L'instrument est conçu et fabriqué selon gb5654-2007 et les normes associées. Il est contrôlé par micro-ordinateur, facile à utiliser, haute précision de mesure, haute efficacité de test et réduit considérablement l'intensité du travail.

    Détails du produit du testeur de perte diélectrique d'huile de transformateur UHV-640


    Product introduction

    The insulating oil dielectric loss tester (also known as oil dielectric loss tester, insulating oil dielectric loss and resistivity tester) is a precision testing device used for evaluating the electrical performance of liquid insulating media such as transformer oil, transformer oil, and capacitor oil. The instrument primarily measures parameters including the dielectric dissipation factor (tan δ), relative permittivity, and volume (or DC) resistivity of insulating oil. By analyzing the insulation performance of the oil, it helps determine whether the oil is affected by issues such as moisture, oxidation, contamination, or aging, providing a reliable basis for the safe operation of power equipment.

    Working Principle

    The insulating oil dielectric loss tester operates on the principle of AC bridge measurement. Under a constant temperature and specified test voltage, an AC electric field is applied to the oil sample. Since insulating oil is not a perfect insulator, a certain amount of energy loss occurs under the influence of the AC electric field. By measuring parameters such as the dielectric dissipation factor (tan δ) and capacitance, combined with temperature compensation algorithms, the insulation performance and aging degree of the insulating oil can be accurately evaluated. Modern instruments generally adopt digital measurement technology and automatic temperature control systems, improving test accuracy and repeatability.

    Paramètres du produit

    Paramètres techniques

    Plage de tension d'essai0~2000VAC,0~500VDC
    Plage de température d'essaiat room temperature~120℃
    Plage de test de perte diélectrique0.00001~100
    Plage de mesure de résistivité2.5MΩ·m~100TΩ·m
    Relative capacitivity test range0~40
    Plage de capacité de test50pF ~ 200pF
    Measurement accuracy - dielectric loss factor±(value×0.5%+0.0001)
    Capacitance±(value×0.5%+0.1pF)
    Relative capacitivity±10% indicates value
    DC resistivity± (value ×0.5%+0.1)
    Dielectric loss value resolution0.00001
    Résolution de résistivité0,001 MΩ·m
    Capacitance resolution0.01pF
    Relative capacitivity0.001
    Pouvoir500W
    Dimensions470×425×385mm3
    Poids22kg
    Conditions Of Use
    Température de l'environnement0℃ ~ +40℃
    Humidité relative≤75% HR

    Product Characteristics

    1. The application of advanced measurement principles and highly digital technology, fully automatic heating, temperature control, high-speed data sampling, calculation, display, printing and storage processes.

    2. The oil cup adopts the three-electrode structure conforming to the national standard GB/T5654-2007, and the electrode spacing is 2mm, which can eliminate the influence of stray capacitance and leakage current on the dielectric loss test results

    3. The instrument adopts medium frequency induction heating, which has the advantages of non-contact between the oil cup and the heating body, uniform heating, fast speed, convenient control, etc., so that the temperature is strictly controlled within the preset temperature error range

    4. Contains a standard capacitor, the dielectric loss and capacitance of the capacitor are not affected by ambient temperature, humidity, etc., so that the accuracy of the instrument is still guaranteed after a long time of use

    5. Large screen color touch screen, man-machine dialogue is convenient, simple and clear operation, at a glance

    6. With open cover break high pressure, oil cup high and low electrode short circuit and other warm tips, eliminate safety hazards, to ensure the personal safety of operators and the normal operation of equipment

    7. With real-time clock, test date and time can be saved, displayed and printed with test results

    8. Automatic storage of measurement data, can store 100 groups of measurement data, thermal printing speed is fast

    9. With empty electrode cup calibration function

    10. Calibration data is automatically saved to facilitate accurate calculation of relative permittivity and DC resistivity

    Application Scenarios

    Power systems: Used for preventive testing and condition-based maintenance of insulating oil in transformers, instrument transformers, bushings, and other equipment.
    Equipment manufacturing: Used for quality inspection of insulating oil in oil-immersed equipment such as transformers and reactors before delivery.
    Oil production: Used for quality control and performance testing of new oil, in-service oil, and reclaimed oil.
    Testing institutions: Used for insulating oil quality testing, equipment acceptance, and fault analysis.
    Research and laboratory experiments: Used for research and testing of insulating materials, dielectrics, and new types of insulating liquids.


    FAQ about Transformer Oil Dielectric Loss Tester

    How to choose a suitable insulating oil dielectric loss tester?

    When selecting a model, key factors to consider include the test parameter range, measurement accuracy, temperature control method, degree of automation, data storage capacity, and whether it supports printing and communication interfaces. In addition, the detection frequency, operating environment, and applicable industry standards should also be taken into account when choosing the appropriate model.


    What types of oil samples can the insulating oil dielectric loss tester test?

    The insulating oil dielectric loss tester is suitable for transformer oil, instrument transformer oil, capacitor oil, switch oil, as well as other mineral insulating oils and certain synthetic insulating liquids. Whether it is new oil, in-service oil, or reclaimed insulating oil, the insulation performance can be evaluated through testing to determine whether it meets the requirements for use.


    What types of oil samples can the insulating oil dielectric loss tester test?

    The insulating oil dielectric loss tester is suitable for transformer oil, instrument transformer oil, capacitor oil, switch oil, as well as other mineral insulating oils and certain synthetic insulating liquids. Whether it is new oil, in-service oil, or reclaimed insulating oil, the insulation performance can be evaluated through testing to determine whether it meets the requirements for use.









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