ASTM D – Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin. Using VDE Electrodes. ▫ IEC Insulating. Page 1. Page 2. Page 3. Page 4. Find the most up-to-date version of ASTM D at Engineering

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Koehler K16175 75kV Dielectric Strength Tester

Particular reference should be made to the general precaution statement of this test method. If this occurs, before using, warm the cell to evaporate the moisture. After careful inspection, any electrodes from which pitting cannot be removed by light buffing should be discarded, as more refinishing would destroy the asm contour and dimensions shown in Asfm.

Mount the electrodes v1816 from opposite sides with the spacing axially centered within more or less 1 mm. Enter product namemake or model. A cell having a capacity of 0. Available request a quote. The dielectric breakdown voltage serves to indicate the presence of contaminating agents such as water, dirt, cellulosic fibers, or conducting particles in the liquid, one or more of which may be present in significant concentrations when low breakdown voltages are obtained.

Tightly seal and shield from light until ready to be tested. Oil sampling procedures are detailed in Practice D Lab Equipment for Sale: A lower than anticipated value is considered as evidence of cell contamination; then repeat the cleaning and the breakdown test with clean dry oil.

Conduct a voltage breakdown test on a specimen of this oil in the manner specified in this test method. Flat “go” and “no-go” gages may be substituted having thicknesses of the specified value more or less 0. Email Us or call toll-free: This test method is applicable to insulating liquids commonly used in cables, transformers, oil circuit breakers, and similar apparatus as an insulating and cooling medium.

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Reinstall the electrodes in the test cup dd1816 adjust spacing and clean in accordance with 7. Adjustment and Care of Electrodes and Test Cell astj. USB memory stick Operating Temperature: Measurement of oil temperature: So that the breakdown may be observed, transparent materials are desirable, but not essential. At the beginning of each days testing, clean according to 7. Contact with us now Your mail: Clearance from the electrodes to all sides, bottom, cover or baffle, and any part of the stirring device is at least Plastic bottles are permeable and moisture content of the sample may change resulting in a measurable difference when compared to samples collected in non-permeable containers.

ASTM D Test Method for Dielectric Breakdown Voltage of Insulating Oils – YONGRUN

The test cell shall be designed to permit easy removal of the electrodes for cleaning and polishing, verification that the shape is within the specified tolerance, and to permit easy adjustment of the gap spacing.

After adjustment of the spacing, rinse the cell with a dry hydrocarbon solvent, such as kerosine or solvents of Specification D Avoid touching the electrodes or the inside of the cell after cleaning.

It is recommended that the circuit design limit the disruptive current duration and magnitude to low values that will minimize damage to the electrodes and limit formation of non-soluble materials resulting from the breakdown, but consistent with the requirements of 4.

If it is necessary to readjust the electrodes, lock the electrodes and check the spacing. Product Description The majority of high-voltage transformers, cables, switchgears, transducers, capacitors, and rectifiers use insulating oils for insulating electrically live parts and to carry off thermal energy. The spacing agreed upon shall be measured with the gage that corresponds exactly to the selected spacing within tolerance stated above for the gage.

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Phenix Technologies – Phenix Technologies TC/VDE Accessory For Astm D – John Morris

For referee tests or tests that will be used for close comparisons, the laboratories shall agree in advance on the spacing for the tests and ensure that all other requirements of this test method are met. The equipment should produce a straight-line voltage-time curve over the operating range of the equipment.

Historical Version s – view previous versions of standard. Calibration s shall be traceable to national standards and calibration should be verified annually or more often to ensure accuracy requirements. axtm

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

This test method should be used as recommended by professional organization standards such as C1816 C Power by seonoco All Rights Reserved: However, a high dielectric breakdown voltage does asgm necessarily indicate the absence of all contaminants; it may merely indicate that the concentrations of contaminants that are present in the liquid between the electrodes are not large enough to deleteriously affect the average breakdown voltage of the liquid when tested by this test method see Appendix X1.