Aluminum alloy cable industry standards will be officially implemented in September 1st

& nbsp; National Energy Bureau website issued announcement No. 3, 2015, the rated voltage 0.6/1kv aluminum alloy conductor cross-linked polyethylene insulation cable, "the industry standard has been in April 2015 2, officially approved, will be officially implemented on September 1, 2015.

The standard is by Shanghai Electric Cable Research Institute and including Shenzhen Cable Technology Co., Ltd., a number of companies jointly prepared and this is by far the aluminum alloy cable industry the most authoritative and most important part of the standard. The standard since 2012 has started to compile, after three years, after repeated revisions to consider and ultimately obtain approval promulgated and implemented, on aluminum alloy cable in the future development of our country has very important significance.

A standard, abandoned " rare earth High-speed Rail aluminum alloy
Industry standard clearly defines the six cable conductor with the chemical formula of the aluminum alloy, the formula is obviously follows the ASTM standard six formula, perhaps this is based on the following considerations: < br / >
1, the aluminum alloy cable in the United States applied for nearly 50 years, six formula in the ASTM standard after the test of time. AA8000 series aluminum alloy cable in the United States over projects in more than 40 years very much, Shanghai Electric Cable Research for this joint United States General Cable Corporation, a the AA8000 series aluminum alloy cable life cycle research report ", the report with detailed data and scientific analysis, it is concluded that the AA8000 series aluminum alloy cable safety reliability and use life of up to more than 40 years, and scientific conclusion.

2, & quot; rare earth high iron aluminum alloy cable & quot; concept launched from the start has been questioned by many experts. The reason is that first, rare earth is not a single element; rare earth iron and aluminum alloy formula table, kinds of trace elements contained in the two formulations by adding rare earth is not the same, the basis for the detection of specific is not clear; secondly, high iron to aluminum alloy conductor electrical performance of ascension will have uncertain effects. So. The industry standard does not include the rare earth high iron aluminum alloy cable included.

3, application cases in the world is not enough to prove that the service life of the rare earth iron and aluminum alloy cable and long-term safety and reliability, and the chemical composition of the product and is very different from the provisions of the ASTM standard.

Two, once again clear the aluminum alloy cable form

Although a national cable standard GB12706-2008 specified cable form must be insulated conductor + + sheath, but there are still some enterprises with tc90, AC90 to aluminum alloy cable. In addition, for aluminum alloy conductor, some with LH, HL, also some LHB to said, with aluminum alloy armor with 5, some 8, some 9 said, the industry standard of above all the clearly defined, in particular are no longer allowed to use tc90, AC90 representation.

Three, the mandatory provisions of the aluminum alloy conductor

The industry standard for aluminum alloy conductor defines the following provisions:

1, to meet the requirements of GB/T3956-2008: This is to follow the original conductor with the original national standards, national standards seamless
;
2, tensile strength and elongation at break provisions: This is the complement of the original national standards, is a mandatory requirement for aluminum alloy conductor; < br / >
3, the chemical composition, this is not the original national standard, is mandatory requirements of aluminum alloy conductor;

4, neutral and protective conductor nominal area requirements: according to this provision, it will not appear 3*120+1*50 and 4*185+1*120 such as heterogeneous structure of wire core the, just make sure the main core nominal cross-sectional area, you can determine the neutral line and a protective line conductor nominal cross-sectional area.