ASTM D2802电线及电缆用耐臭氧乙烯烃聚合物绝缘材料的标准规范

ASTM D2802 Standard Specification for Ozone-Resistant Ethylene-Alkene Polymer Insulation for Wire and Cable
ASTM D2802 电线及电缆用耐臭氧乙烯烃聚合物绝缘材料的标准规范

This specification covers an ozone-resisting crosslinked rubber insulation compound for electrical wires and cables. The polymer shall consist substantially of ethylene-alkene copolymer (EAM) or ethylene-alkene diene terpolymer (EADM). This polymer type includes ethylenepropylene copolymer (EPM) and ethylenepropylene diene terpolymer (EPDM). The crosslinked insulation shall conform to the requirements for physical properties specified. Tests shall be performed in accordance to the following test methods: AC voltage withstand test; insulation resistance; DC voltage withstand tests; capacitance and dissipation factor; partial discharge level test; accelerated water absorption; and ozone resistance.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope
1.1 This specification covers an ozone-resisting crosslinked rubber insulation compound for electrical wires and cables. The polymer shall consist substantially of ethylene-alkene copolymer (EAM) or ethylene-alkene diene terpolymer (EADM). This polymer type includes ethylenepropylene copolymer (EPM) and ethylenepropylene diene terpolymer (EPDM).
1.2 This type of insulation is considered suitable for use on wire or cable which will be used in wet and dry locations with conductor temperatures up to 90°C during continuous operation, to 130°C during emergency overload conditions, and to 250°C during short-circuit conditions. It is considered suitable for all sizes and voltage classifications of single- and multiple-conductor power cables up to 35 000 V phase-to-phase at the 100 % insulation level and up to 25 000 V at the 133 % insulation level as listed in Table 1D, Conductor Sizes, Insulation Thicknesses, Test Voltages, and Corona Extinction Levels for Ethylene-Propylene Rubber Insulation, of Test Methods D470. Single-conductor cables shall have a supplementary covering over the insulation, and multiple-conductor cables shall have an overall covering.
1.3 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.
1.4 In many instances the insulation material cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on insulated wire or cable in this specification solely to determine the relevant property of the insulation and not to test the conductor or completed cable.

2. Referenced Documents (purchase separately)
ASTM Standards
ASTM D470 Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
ASTM D1711 Terminology Relating to Electrical Insulation
ICEA Standard
T-24-380 Guide for Partial Discharge Procedure
Index Terms
AC voltage withstand test; accelerated water absorption; DC voltage withstand test; ethylene-propylene rubber; insulation resistance; ozone resisting; EPM/EPDM materials/applications--specifications; Ethylene-alkene polymer; Electrical insulating materials--specifications; Electrical insulating rubber--specifications; Insulated wire and cable--specifications ;

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 來源：防火網　發布時間：12/18/2013 點擊次數：890