ASTM D470 PDF

Split Tear Strength – ASTM D The force per unit thickness required to tear a material. Test specimens are placed in a tensile test machine. The jaws are set. This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D-9 on. Electrical. ASTM D Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable.

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Cable Outside Diameter Less than 1? Age specimens having cable tape applied prior to crosslinking with such tape removed. One test specimen shall be taken for the?

This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. A chamber 18 to 20 in. Make an effort to separate the jacket from the insulation by slitting the covering through to the conductor and pulling the jacket and insulation apart by pliers.

ASTM D – 05_百度文库

This test may be used to provide data for research and development, design engineering, quality control, and asm or rejection under speci? This measurement contributes data useful for creating a knowledge of the expected life of the cable since the presence of partial discharges frequently results in signi?

Support the specimens in an approximately vertical plane midway between the top and bottom, with the free ends down to, but not touching, the bottom. Thoroughly instruct all operators in the proper way to conduct tests safely.

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ASTM D470 – 13

Adjust the height of the? Nonshielded cables shall be tested in a grounded water bath or in a foil. The cotton must cover an area 12 in. The height of the segment is the thickness of insulation on the side from which the slice is taken.

Physical Tests of Insulation and Jacket Compounds. Order of Testing At the end of 1 h period, place the specimen in the oven, allowing both the micrometer and test specimen to remain in the oven for 1 h. We use cookies to make our website easier to use and to better understand your needs. Use appropriate means, such as exhaust vents, to reduce ozone concentrations to acceptable levels in working areas.

Then open the two-way stopcock on the buret to the air and? Take insulation resistance readings asrm each temperature after equilibrium is established.

ASTM D – 13 Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable

When making high voltage tests, particularly in compressed gas or in oil, the energy released at breakdown may be suff? Then close the stopcocks and withdraw the bottle for titration. Last previous edition approved in as D — Determine the amount of iodine added to the solution.

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Accurately weigh the solution with the added iodine. Dust the upper half of each specimen.

Air pressure, heat, or oxygen pressure Air oven For Oil Immersion 3 3 3 3 3 One specimen of each three shall be tested and the other two specimens held in reserve, except that when only one sample is selected all three specimens shall be tested and the average of the results reported. Then remove it from the desiccator, weigh to the nearest 10 mg, and record the weight as W. The tank has a tightly?

Starting with the voltage at which the test described in Precision and Bias Water absorption tests can also give an indication of the surface condition of the insulation. Maintain the vessel completely full of water during the immersion period. The acid drier consists of two mL gas washing awtm Water absorption tests provide useful data for research and development, engineering design, quality control, and acceptance or rejection under speci? Test such assemblies while they are still immersed in water and after they have been immersed for at least 1 h.

Historical Version s – view previous versions of standard. Calibrate this instrument by comparison with results obtained with the chemical method Sections 94 to