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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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Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, V-blenders, 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. What are your requirements. Conduct a voltage breakdown test on a specimen of this oil in the manner specified in this test method. Link to Astk This link will always route to the current Active version of the standard. Refer to Terminology D for definitions used in this test method.

When not in use, keep the cell filled with oil that meets the requirements of Specification D of the type normally tested. 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 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.

Calibrate and label automatic controls in terms of rate-of-rise. 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 d18116 this test method see Appendix X1.

Determination of the dielectric breakdown voltage of insulating oils provides an early ashm method for any reduction in the insulating properties.

Automatic Oil Tester kV, ASTM D, ASTM D, ASTM D, IP

Sstm Products and Asstm lab apparatus baths, calorimeters, color measurement, density meters, flash point, hydrogenators, oil testing, penetrometers, surface tension, vapor pressure, viscometers and rheometers, USB memory asgm Operating Temperature: Right-click to open the PDF in a new window or download it: Clearance from the electrodes to all sides, bottom, cover or baffle, and any part of the stirring device is at least After thorough cleaning, 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.


Automatic equipment should be used to control the voltage rate of rise because of the difficulty of maintaining a uniform voltage rise manually. Particular reference should be made s1816 the general precaution statement of this test method. After adjustment of the spacing, rinse the cell with a dry hydrocarbon solvent, such as kerosine or solvents of Specification D The quality of the insulating oil must be checked at regular intervals to ensure a long equipment service life.

So that the breakdown may be observed, transparent materials are desirable, but not essential. 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.

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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. The spacing agreed upon shall be measured with the gage that corresponds exactly to the selected spacing within tolerance stated above for the gage.

The equipment should produce a straight-line voltage-time curve over the operating range d11816 the equipment. The dielectric breakdown voltage serves to indicate the presence of contaminating agents such as water, dirt, cellulosic fibers, or conducting astj in the liquid, one or more of which may be present in significant concentrations when low breakdown voltages are obtained.

Hipotronics TCVDE Oil Dielectric Test Cell for ASTM D testing – Mitchell Instrument Company

It is recommended that the circuit design limit the disruptive d816 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.


Alternatively, the cell may be stored empty in a dust-free cabinet.

A cell having a capacity of 0. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are d116 provided as part of the standard. ASTM Method being used? 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. Work Item s – proposed revisions of this standard.

Provide the test cell with a motor-driven two-bladed impeller and drive shaft, constructed of a material having high dielectric strength. Email Us or call toll-free: Do not use a qstm boiling point solvent, as its rapid evaporation may cool the cell, causing moisture condensation. A test sstm having a capacity of 0. It has been found to be especially useful in diagnostic and laboratory investigations of the dielectric breakdown strength of insulating liquid in insulating systems.

The sample shall be taken in a dry, clean, non-permeable bottle. Available request a quote.

Tightly seal and shield from light until ready to be tested. Enter product namemake or model. If this occurs, before using, warm the cell to evaporate the moisture. Looking for a specific close-up?

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It is the responsibility of the asmt of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Reinstall the electrodes in the test cup and adjust spacing and clean in accordance with 7. IEEE Standard 4 is required during the manufacturing of the test apparatus and utilized during calibration of the equipment.