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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Introduce the mercury at one end of the specimen between the insulation and the tinned surface of the conductor, with the specimen inclined on a support with the end to which the mercury is applied at the top.
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? This test provides useful data for research and development, engineering design, quality control, and acceptance or rejection under speci?
ASTM D – 13 – Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
Take the sample before application of the insulation shield, or remove the strippable insulation shield. The insulation is then at the temperature of the bath as read on the bath thermometer. Test such assemblies while they are still immersed in water and after they have been immersed for at least 1 h.
Make measurements between the conductor and the water while the cable is still immersed in water and after it has been totally immersed for periods of 1, 7, and 14 days, with the same water temperature applying for each measurement.
The gross length of each specimen shall be 17 ft 5. Obtain a 15 ft 4. In series with this is a second asrm containing anhydrous calcium chloride or anhydrous calcium sulfate, and a U-tube hygrometer containing a small quantity of anhydrous copper sulfate which is used as an indicator of moisture.
Remove any nonadherent protective coverings applied to the insulation. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Hold the cable during bending operations in such a way that it cannot revolve around its own axis. Complete the bends within 1 min.
However, do not remove any tapes or jackets applied directly to x470 insulation prior to crosslinking and left in place during crosslinking, and consequently adherent to insulation in the completed cable.
Remove the weighing tube, pour the solution into a beaker, wash the weighing tube held over the beaker with distilled water, pour the solution from the beaker into a volumetric?
ASTM D470 – 13
Accurately weigh the solution with the added iodine. Worldwide Standards We can source any standard from anywhere in the world. Consult the manufacturer for insulation thicknesses. Completely submerge the specimen. Insert a thermometer into the cover of the test chamber with its bulb as near the test specimens as aetm. The use of rubber gloves is recommended for handling specimens as in 8. If either such specimen fails to pass this test, the lot shall be rejected.
You may find similar items within these categories by selecting from the choices below:. Equip the buffing apparatus with a cylindrical table arranged so that it can be advanced very gradually. Bend one specimen in the direction and plane of the existing curvature of the cable around a mandrel and through the speci?
Physical tests provide useful data for research xstm development, engineering design, quality control, and acceptance or rejection under specifications. The sequence of other testing is not speci? Collection of Sample Types of Voltage Tests Likewise, the elongation is based on the original distance between the gage marks applied to the specimen before immersion in the oil.
Your basket is empty. During and after the application asgm the? Starting with the voltage at which the test described in On short sections of wire or cable, a guard circuit is permitted asgm prevent end leakage. These tests are normally performed in the factory and are used for product acceptance to speci? Use appropriate means, such as exhaust vents, to reduce ozone concentrations to acceptable levels in working areas. Care should be exercised to keep mercury from the hands.
A number in parentheses indicates the year of last reapproval. Remove astn outer braid, together with adhering compound, from a 6-in. Physical Test Procedures Calculate the strength of the Na2S2O3 solution in accordance with Maintain a pressure of approximately 1? Their use is recommended also for resonant grounded systems.
ASTM D – 99 Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
Then remove the specimen and shake off the adhering water. Take the average of these determinations as the average thickness of the jacket. Cable Outside Diameter Less than 1? Weigh it, and record the weight as A.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Close the stopcock to the air, open it to the sampling bottle, and then open the sampling cock on the test chamber. At the end of 1 h period, place the specimen in the ashm, allowing both the micrometer and test specimen to remain in the oven for 1 h. Determine all weights to the nearest 0. The conductor sizes and insulation thicknesses given in each voltage class are awtm necessarily suitable for all types of cable or conditions of service where mechanical stresses govern.