Abstract
This specification covers a crosslinked insulating rubber polymer, primarily composed of synthetic rubber, for use in electrical wires and cables. This type of insulation is suitable for continuous operation in dry locations at conductor temperatures and operating voltages not exceeding specified points. Since the insulation cannot be tested unless it has been formed around a conductor, tests shall then be done on insulated wires solely to determine the relevant property of the insulation and not to test the conductor or completed cable. Besides insulation resistance, and AC and DC voltage tests, insulations shall also conform to the following physical properties: unaged tensile strength and elongation at rupture; and tensile strength and elongation after air pressure heat and air oven tests.
Scope
1.1 This specification covers a crosslinked insulating compound for electrical wires and cables. The rubber polymer is primarily composed of synthetic rubber.
1.2 This type of insulation is suitable for continuous operation at conductor temperatures not exceeding 90°C in dry locations, and operating voltages not exceeding 2000 V. This insulation may have low-temperature limitations. Consult the manufacturer for specific recommendations for installation.
1.3 In many instances the insulation cannot be tested unless it has been formed around a conductor. Therefore, tests are done on insulated wire in this standard solely to determine the relevant property of the insulation and not to test the conductor or completed cable.
1.4 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only.
