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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Oil sampling procedures are detailed in Practice D Email Us or call toll-free: 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.
Mount the electrodes rigidly from opposite sides with the spacing axially centered within more or less 1 mm. If it is necessary to readjust the electrodes, lock the electrodes and check the spacing. If the test of any sample is below the breakdown value being used by the operator as a minimum satisfactory value, drain the cell and flush the cell with new oil of the type to be tested that is filtered through a 5-micron filter and containing less than 25 ppm moisture before testing the next specimen.
Calibrate and label automatic controls in terms of rate-of-rise. After adjustment of the spacing, rinse the cell with a dry hydrocarbon solvent, such as kerosine or solvents of Specification D Tightly seal and shield from light until ready to be tested.
The equipment should produce a straight-line voltage-time curve over the operating range of the equipment. At the beginning of each days testing, clean according to 7.
Calibration s shall be traceable to national standards and calibration should be verified annually or more often to ensure accuracy requirements. A cell having a capacity of 0. Link to Active This link will always route to the current Active version of the standard.
Automatic Oil Tester kV, ASTM D, ASTM D, ASTM D, IP
This test method should be used as recommended by professional organization standards such as IEEE C 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. It has been found to be especially useful in diagnostic and laboratory investigations of the dielectric breakdown strength of insulating liquid in insulating systems.
A test cell having a capacity of 0. ASTM Method being used?
A lower than anticipated value is considered as evidence of cell contamination; then repeat the cleaning and the breakdown test with r1816 dry oil. IEEE Standard 4 is required during the manufacturing of the test apparatus and utilized during calibration of the equipment. The impeller, located below the lower edge of the electrodes, rotates in such a direction that the resulting liquid flow is directed downward against the bottom of the test cell.
Reinstall the electrodes in the test cup and adjust spacing and aastm in accordance with 7.
Right-click to open the PDF in a new window or download it: General Use laboratory apparatus balances, baths, blenders, centrifuges, chart recorders, freezers, fume hoods, furnaces, glassware washers, glove boxes, mixers, moisture testing, ovens, pumps, shakers, vacuum equipment, water purification Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Petroleum Products and Biofuel lab apparatus baths, calorimeters, color measurement, density meters, flash point, hydrogenators, oil testing, penetrometers, surface tension, vapor pressure, viscometers and rheometers, Adjustment and Care of Electrodes and Test Cell 7. Construct the test cell of a material of high dielectric strength, that is not soluble in or attacked by any of the cleaning or test liquids used, and is nonabsorbent to moisture and the cleaning and test liquids.
Phenix Technologies TC/VDE-100 Test Cell (LD100) for ASTM D1816 (with stirrer)
Awtm with us now Your mail: However, a high dielectric breakdown voltage does not 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.
This test qstm is applicable to insulating liquids commonly used in cables, transformers, oil circuit breakers, and similar apparatus as an insulating and cooling medium. The dielectric breakdown voltage serves to indicate the presence of contaminating axtm 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.
Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, D18166, Power by seonoco All Rights Reserved: The residue from the buffing should be removed by repeated wiping with lint-free tissue paper saturated with a suitable solvent, followed by solvent rinsing or ultrasonic cleaning.
Particular reference should be made to the general precaution statement of this test d18166. 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.
Historical Version s – view previous versions of standard. Automatic equipment should be used to control the voltage rate of rise because of the difficulty of maintaining a uniform voltage rise manually.
Looking for a specific close-up? Flat “go” and “no-go” gages may be substituted having thicknesses of the specified value more or less 0. Do d8116 use a low boiling point solvent, as its rapid evaporation may cool the cell, causing moisture condensation. If the breakdown voltage is in the expected range for this conditioned oil, the cell is considered properly prepared for testing other samples. What are your requirements.