Up to 16 layers (original 275 is 12 layers) up-0cc (single crystal oxygen free copper) group cross winding method is adopted. The purity of single crystal oxygen ...
For example, an ordinary copper wire is not perfectly continuous; on a ... ways: 1) by using high-purity ("oxygen-free") copper (I use cables made of ... any exposed length of bare wire should be wrapped in heat-shrink tubing.