Standard Specification for Track-Resistant Thermoplastic High-Density Polyethylene Insulation for Wire and Cable, 75 °C Operation (Includes all amendments and changes 10/13/2020).
NORMA vydána dne 1.8.2020
Označení normy: ASTM D3554-20e1
Datum vydání normy: 1.8.2020
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
This specification covers track-resistant black thermoplastic high-density polyethylene insulation for conducting wires and cables operating continuously at a specified conductor temperature. The insulation is suitable for use for power transmission in overhead spaced-line service that is exposed to sunlight and other atmospheric environments. The prescribed tests cannot be performed unless the insulation is formed around a conductor, but these are done solely to determine the insulation properties and not to test the conductor or completed cable. Each test sample should be subjected to an ac or dc voltage withstand test at voltages that are based on the nominal thickness of the insulation and should comply with the required values for aging, heat distortion, cold blend, U-bend discharge, track resistance, tensile strength, elongation at rupture, environmental cracking, and surface resistivity.
Keywords:
ac test, cold bend, dc test, elongation, environmental cracking, heat distortion, high-density polyethylene, surface resistivity, tensile strength, thermoplastic, track-resistant, u-bend discharge,, ICS Number Code 29.035.20 (Plastic and rubber insulating materials)