UL关于铝合金电缆的讲义5-Improvement – Connectors改善 – 连接器

Improvement – Connectors改善 – 连接器

Problem:   incorrect installation     connection failure

问题:     不正确安装     连接失败

•        Connectors intended only for copper conductors were used for aluminum conductors

仅用于铜导体的连接器被用于铝导体

•        UL issued a standard for connectors for aluminum building wire,

UL 486B UL推出铝建筑线用连接器标准, UL 486B

电线连接器与焊片

UL 486B, CCN: ZMVV, Wire Connectors and Soldering Lugs

改善 – 铝合金

Popular aluminum conductor material before 1972:

1972年之前流行的铝导体材料：

EC grade aluminum, AA-1350

(99.5% pure aluminum 纯铝, hard temper 最高硬度)

•        AA-8000 series aluminum alloy conductors have physical properties that are significantly different from AA-1350 aluminum conductors

AA-8000系列铝合金 导体具有的物理性能与AA-1350铝合金导体显着不同

•        Fully annealed AA-8000 series conductors perform similarly as copper conductors  at  terminations  

完全退火的AA-8000系列导体于终端的性能表现跟铜 导体差不多

Reduce connection problem 减少连接问题

AA-8000 series aluminum alloy is the only type of aluminum alloy permitted for use in UL listed building wire

AA-8000系列铝合金是唯一一种 被UL允许使用于建筑线类的铝合金