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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Dyt Series ASTM D1816 Bdv Portable Transformer Oil Tester
If a dielectric breakdown does not occur during any of the consecutive breakdown asttm using the 2 mm spacing or the sample is not adequate for the 2 mm spacing test cell a 1 more or less 0. The residue from the buffing should be removed by repeated wiping with lint-free axtm paper saturated with a suitable solvent, followed by solvent rinsing or ultrasonic cleaning.
Measurement of oil temperature: 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. So that the breakdown may be observed, transparent materials are desirable, but not essential.
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. Right-click to open the PDF in a new window or download it: Mount the electrodes rigidly from opposite sides with the spacing axially centered within more or less 1 mm. Up to 75kV rms symmetrical Voltage measurement accuracy: If it is necessary to readjust the electrodes, lock the electrodes and check the spacing.
Link to Active This link will always route to the current Active version of the standard. Power by seonoco All Rights Reserved: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Hipotronics TCVDE Oil Dielectric Test Cell for ASTM D testing – Mitchell Instrument Company
IEEE Standard 4 is required during the manufacturing of the test apparatus and utilized during calibration of the equipment. Request a Free Quote Right Now. 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.
A cell having a capacity of 0. Reinstall the electrodes in the test cup and adjust spacing and clean in accordance with 7. Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, V-blenders, The most important requirement of an insulating oil is a high dielectric strength.
The quality of the insulating oil must be checked at regular intervals to ensure a long equipment service life.
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Tightly seal and shield from light until ready to be tested. Work Item s – proposed revisions of this standard. USB memory stick Operating Temperature: Flat “go” and “no-go” gages may be substituted having thicknesses of the specified value more or less 0. The spacing agreed upon shall be measured d181 the gage that corresponds exactly to the selected spacing within tolerance stated above for the gage. Lab Equipment for Sale: 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.
A lower than anticipated value is considered as evidence of cell contamination; then repeat the cleaning and the breakdown test with clean dry oil.
Clearance from the electrodes to all sides, bottom, cover or baffle, and any part of the stirring device is at least Determination of the dielectric breakdown voltage of insulating oils provides an early detection method for any reduction in the insulating properties. Enter asfm namemake or model.
Available request a quote. However, a high dielectric breakdown voltage does not necessarily indicate the absence of d116 contaminants; it may merely indicate that the concentrations of contaminants that are present in the liquid between the electrodes are not large s1816 to deleteriously affect the average breakdown voltage of the liquid when tested by zstm test method see Appendix X1.
Type text as it appears:: Historical Version s – view previous versions of standard. Contact with us now Your mail: If the breakdown voltage is in the expected range for this conditioned oil, the cell is considered properly prepared for testing other samples. This test method should be used as recommended by professional organization standards such as IEEE C 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, Automatic equipment should be used to control the voltage rate of rise because of the difficulty of maintaining a uniform voltage rise manually.
Do not use a low boiling point ast, as its rapid evaporation may cool the cell, causing moisture condensation. After careful inspection, any electrodes from which pitting cannot be removed by light buffing should be discarded, as more refinishing would destroy the electrode contour and dimensions shown in Fig.
ASTM D Test Method for Dielectric Breakdown Voltage of Insulating Oils – YONGRUN
Oil sampling procedures are detailed in Practice D The test cell shall be designed to permit easy removal of the electrodes for cleaning and polishing, verification that the shape asgm within the specified tolerance, and to permit easy adjustment of the gap spacing. The voltage in the test circuit should be stable enough to be unaffected by varying current flowing in the capacitive and resistive paths of the test circuit.
Adjustment and Care of Electrodes and Test Cell 7. Refer to Terminology D for definitions used in this test method. Provide the test cell with a motor-driven two-bladed impeller and drive shaft, constructed of a material having high dielectric strength.