 Drip Test
A test specimen of 30 cm in length shall be cut from a completed cable. One end of the sheath shall be dripped clean of the filling compound and flared out at approximately 45 Deg. angle. The specimen shall then be suspended in an air oven with a clean glass disc placed directly below the flared end of the cable. The oven temperature shall be set at 80 +/- 1 Deg.C for a period of 24hours. At the end of the test period the glass disc shall be examined for the presence of the filling compound. There shall be no dripping of filling compound.
Cone Penetration Test.
Cone penetration is the measure of the gels softness and flexibility at low temperature.
The measurement is obtained by dropping a brass or aluminium cone into a container of gel and recording the depth of the cone penetration into the sample. This is displayed on the instrument dial in dmm or 1/10mm.
To maintain consistency in measurement of this test the following factors are very important:
Sample size
-Preparation (air bubble free)
-Sample temperature
-Weight of cone
-Rest time
-Worked / unworked sample
-Operator
-Test procedure etc.
Stability Test.
About 5g of filling compound shall be filled in a glass container of about 10 mm dia with both the ends open and held with the axis of the container in a horizontal plane. The outer surface of the glass tube shall be covered with a copper wire mesh to ensure uniform temperature and prevent local hot spots.
This container shall be held horizontally by a string suspended vertically in a test tube of diameter of 30 to 40 mm so that it hangs freely. The temperature of the jelly shall be placed in a constant temperature bath maintained at 80 +/- 1Deg.C for 120 hours.
The compound shall remain intact in the container after 120 hours, and shall not show any separation of constituents of the compound
Water Penetration Test.
Cables filled with POLYGEL will pass severe water penetration testing such as illustrated above.This test specifies no water penetration into the beaker after 14 days.
TESTING PROCEDURE:
This arrangement is shown above.The sample under test is kept straight in a horizontal plane. One end of the sample shall be connected suitably through a water tight gland to a water pipe containing 1 meter head of water. The connection shall be such that the cable sheath shall not be squeezed tight nor shall it allow leakage of water at this point.The other end of the cable shall be free.
One meter head of water shall be applied at an ambient temperature for duration of the test.No air bubble shall remain trapped in this pipe. Any bubbles that may be present initially shall be removed by agitating the water column using a thin wire for this purpose.
The test shall be deemed to have started after ensuring that the head of water is 1 meter and all air bubbles have been eliminated.The sample shall not be disturbed during the period under test.During this period no water shall have seeped from the cable sample.
D3895-98 Standard Test Method for Oxidation-Induction Time of Polyolefins by Differential Scanning Calorimetry.
This test method outlines a procedure for the determination of oxidation induction time (OIT) of polymeric materials by differential scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stablized/compounded form.
D1693-98 Standard Test Method for Environment Stress-Cracking of Ethylene Plastics.
This test method covers the determination of the susceptibility of ethylene plastics, as defined in Terminology D883, to environmental stress-cracking when subjected to the conditions herein specified. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical failure by cracking.
D4568-93 Standard Test Methods for Evaluating Compatibility Between Cable Filling and Flooding Compound and Polyolefin Wire and Cable Materials.
These test methods evaluate the compatibility between cable filling or cable flooding compounds, or both, and polyolefin materials used in the manufacture of wire and cable that are usually in intimate contact with the filler or floodant , or both.
D1475-98 Standard Test Method for Density of Liquid Coating, links, and Related Products.
D1475-98 Standard Test Method for Density of Liquid Coating, links, and Related Products.
This test method covers the measurement of density of paints, inks, varnishes, lacquers, and components thereof, other than pigments, when in fluid form.
D1169-95 Standard Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids.
This test method covers the determination of specific resistance (resistivity) applied to new electrical insulating liquids, as well as to liquids in service, or subsequent to service, in cables, transformers, circuit breakers, and other electrical apparatus.
D937-97 Standard Test Method for Cone Penetration of Petrolatum.
This test method covers measuring with a penetrometer the penetration of petrolatum as an empirical measure of consistency.
D1500-98 Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale).
This test method covers the visual determination of the color of a wide variety of petroleum products such as lubricating oils, heating oils, and petroleum waxes.
D127-87 (1993)e1 Standard Test Method for Drop Melting Point of Petroleum Wax Including Petrolatum.
This test method covers the determination of the drop melting point of petroleum wax. It is used primarily for petrolatums and other microcrystalline wax.
D566-97 Standard Test Method for Drop Point of Lubricating Grease.
This test method covers the determination of the drop point of lubricating grease.
D217-97 Standard Test Method for Cone Penetration of Lubricating Grease.
This test method covers four procedures for measuring the consistency of lubricating greases by the penetration of a cone of specified dimensions, mass, and finish. The penetration is measured in tenths of a millimetre.
D150-98 Standard Test Method for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation.
This test method covers the determination of relative permittivity, dissipation factor, loss index, power factor, phase angle, and loss angle of specimens of solid electrical insulating materials when the standards used are lumped impedance. The frequency range that can be covered extends from less than 1 Hz to several hundred megahertz.
D92-98a Standard Test Method for Flash and Fire Points by Cleveland Open Cup.
This test method describes the determination of the flash and fire point of petroleum products by a manual Cleveland open cup apparatus or an automated Cleveland open cup apparatus.
D93-99 Standard Test Method for Flash-point by Pensky-Marten Closed Cup Tester.
This test method describes the determination of the flash point of petroleum products by a manual Pensky-Marten closed cup apparatus or an automated Pensky-Marten closed- cup apparatus.
D257-93 (1998) Standard Test Method for D C Resistance or Conductance of Insulating Materials.
This test methods cover direct-current procedures for the determination of dc insulation resistance, volume resistance, volume resistivity, surface resistance, and surface resistivity of electrical insulating materials, or the corresponding conductances and conductivities.
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