We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
Standard Specification for Crosslinked Polyethylene Insulation for Wire and Cable Rated 2001 to 35 000 V
Translate name
STANDARD published on 1.10.2020
Designation standards: ASTM D2656-20
Publication date standards: 1.10.2020
SKU: NS-1008087
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
This specification covers a crosslinked polyethylene insulation for electrical wires and cables for conductor sizes 8 AWG (8.37 mm2) and larger. The base polymer of this insulation consists substantially of polyethylene. The partial discharge, ac voltage, insulation resistance, and dc voltage shall be tested to meet the requirements prescribed. The accelerated water absorption, permittivity and dissipation factor, U-bend discharge, and surface resistivity shall be tested to meet the requirements prescribed. The heat distortion, and percent hot creep and percent hot set shall be tested to meet the requirements prescribed.
Keywords:
ac voltage, crosslinked polyethylene, dc voltage, heat distortion, hot creep, hot set, insulation resistance, water absorption, weather resistant,, ICS Number Code 29.035.20 (Plastic and rubber insulating materials)
1. Scope | ||||||||||
1.1 This specification covers a crosslinked polyethylene insulation for electrical wires and cables for conductor sizes 8 AWG (8.37 mm2) and larger. The base polymer of this insulation consists substantially of polyethylene. 1.2 This type of insulation is suitable for use on power cables in wet and dry locations at conductor temperatures not exceeding 90 °C for continuous operation, 130 °C for emergency overload conditions, and 250 °C for short-circuit conditions. It is considered suitable for all sizes and voltage classifications of single- and multiple-conductor power cables at voltage ratings of 2001 to 35 000 V phase-to-phase at the 100 % insulation level and at voltage ratings of 2001 to 25 000 V at the 133 % insulation level as listed in Table 1C of Test Methods D470. 1.3 Materials covered by this specification are not sunlight- and weather-resistant unless they are carbon black pigmented or contain an additive system designed for this protection. 1.4 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. 1.5 Whenever two sets of values are stated, in different units, the values in the first set are regarded as standard, while the values in parentheses are provided for information only and are not considered standard. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||||||
2. Referenced Documents | ||||||||||
|
Do you want to make sure you use only the valid technical standards?
We can offer you a solution which will provide you a monthly overview concerning the updating of standards which you use.
Would you like to know more? Look at this page.
Latest update: 2024-05-19 (Number of items: 2 902 277)
© Copyright 2024 NORMSERVIS s.r.o.