Connection method of AAC conductor

Since the coefficient of expansion, the material properties of aaac conductors and copper conductors are not the same so copper conductors and AAAC conductors should not be connected directly. Usually, a way to achieve the purpose of the connection.

1. AAAC conductor+terminals (aluminum and tin-plated copper connection terminals, according to the national standard torque values provided by the fastening screws, and increased dishwashers, copper and aluminum to copper and aluminum metal during thermal expansion and contraction to maintain the effective connection), poor reliability of this connection scheme.

2. Copper and AAAC conductor transition + terminal (terminal aluminum alloy connecting portion and copper portion and copper connections) or micro-alloyed copper alloy cable transition + terminal (terminal only consider the result of the alloy conductivity or other properties, and connections the chemical composition of AAAC conductor, electrical properties, mechanical properties, compressive creep properties, which do not match). The connection mode is a transitional solution that can not be achieved in connection with the performance of the AAAC conductor matches the aluminum transition terminal case of using copper. 

But these programs or so-called because aluminum and AAAC conductor connection does not match the performance of the alloy exist Even according to GB9327-2008 do IEC61238-2003 or 1000 thermal cycling tests to simulate 30 years of application (after all, the laboratory simulation experiment in the laboratory after crimping terminal specifications, and the short test time, in fact, can not be truly reflects the tendency to creep and other characteristics of aluminum) and the like, and in strict accordance with the norms of construction, can not guarantee the security of cable connections and use, because there is a connection terminals and cables aluminum or performance does not match the so-called alloys, all aluminum machinery Problems poor performance, resistance to creep still exists, so poor reliability of this connection scheme.

3. AAAC conductor and aluminum cable connection consistent performance copper aluminum transition terminal (terminal portion and AAAC conductor, copper portion and terminal copper connection) This connection is real aaac conductor application the most accurate, reasonable and reliable, the most complete connectivity solutions.