[China Aluminum Network] core tips: the use of aluminum alloy cables without sacrificing safety, and to play its electrical performance, mechanical properties and economic performance, must have a special connection terminal with the aluminum alloy cable performance matching supporting use, no Aluminum alloy cables with special aluminum alloy connection terminals are worthless, not even as good as aluminum cables.
In order to ensure the safety and application of aluminum alloy cable products, users should first select the correct connection solution when they purchase aluminum alloy cable products, that is, choose the special aluminum alloy-copper connection terminal that is consistent with the performance of the aluminum alloy cable conductor purchased. Aluminum alloy cable connector connection solutions, this is to protect the aluminum alloy cable reflects the advantages and value of the fundamental.
Non-aluminum alloy cables, and several AA-8000 conductor cable performance inconsistent connector (for example: copper and aluminum transition terminal and aluminum alloy connector with AA-8000 conductor cable performance, etc.) several fatal problems:
First, copper-aluminum transition terminal because of the presence of aluminum in the terminal, all aluminum as a conductor of the defects and deficiencies still exist, this terminal is used to connect aluminum alloy cable, the advantage and value of aluminum alloy cable is gone, not as good as Aluminum cables are used directly, because aluminum cables are more economical.
Second, the copper-aluminum transition terminal was originally used to connect aluminum cables. The terminal installation size did not match the size of the terminal equipment. It not only increased the transit copper bills, but also transferred copper bills in multiple passes, leaving hidden security risks.
Third, due to the mismatch of the copper-aluminum transitional connection terminals and the electrical terminals, there is an increase in the contradiction in the transfer of bronze medals and the resulting costs, and it is difficult to avoid the security risks resulting from the brutal construction that cannot be resolved due to such problems.
IV. The copper-aluminum transition terminal was originally used to connect aluminum cables. The inner diameter of this terminal does not match the outer diameter of the cable conductor. Special crimping tools must be used, which makes it difficult to standardize the construction and leave hidden safety hazards.
V. The purity of aluminum used in various brands of copper-aluminum transition terminals used in the market can only reach 99.5%. (Note: The purity of general electrical aluminum is above 99.7%) The comprehensive conductivity of copper-aluminum transition terminals can only be 54. %IACS or less (Note: conductive aluminum alloy conductivity requirements above 61% IACS), which caused the terminal and aluminum alloy cable electrical performance does not match, the result is more than 21% transmission line resistivity increased, the line transmission capacity decreased by 21% or Increase line loss by more than 21%.
Therefore, when the user selects the aluminum alloy cable, it is necessary to examine whether the manufacturer is equipped with a dedicated connection terminal for the aluminum alloy cable, whether to provide a correct aluminum alloy cable connection solution, and whether to provide a matching report of the matching of the cable and the connector.
(A) Proper connection scheme for aluminum alloy cables: (Achieves historical connection schemes for safe and accident-free use of aluminum alloy cables in North America and other countries in the past 50 years) Aluminum alloy-copper must be used in conjunction with cable conductor performance when connecting aluminum alloy cables Connector.
(B) Accidental connection scheme of aluminum alloy cable: When the aluminum alloy cable is connected, the aluminum connector such as the copper-aluminum transition terminal originally used for connecting the aluminum cable and the aluminum alloy connector with inconsistent performance of the cable conductor are used incorrectly. This connection scheme will Leaving a safety hazard will result in the loss of the advantages and value of using aluminum alloy cables.
(C) The supplier selected by the user must guarantee to the user that the special aluminum alloy-copper connection terminal product with matching performance of the aluminum alloy cable conductor is provided, and present the aluminum alloy cable conductor issued by the national authoritative inspection organization. Material and supporting terminal aluminum alloy material performance consistency inspection report. example:
(D) As we all know, cable safety problems are basically connected. If aluminum alloy cables are connected, aluminum alloy-copper connection terminals with the same performance as aluminum alloy cable conductor materials will not be used. This will cause the aluminum alloy cable. The actual use of effects and safety is not as good as aluminum cables.
(E) As for the other aluminum alloy terminals with inconsistent performance with the AA-8000 conductor aluminum alloy, due to the material's physical, mechanical, electrical, compressive creep properties and AA-8000 conductor aluminum alloy performance differences, if such a terminal For aluminum alloy cable connection, it will be a matter of security problems.
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