2018-04-141. Look carefully at the printed characters of cable labels, the handwriting is vague and unknown. Check the typeface on the label and insulating cover. If there are any typographic errors or different depth of printing and the typeface is blurred, attention should be paid to them.
2018-04-14First, appearance, smooth and round, uniform color, insulating rubber and copper core are not easy to peel off, poor quality rubber looks thick, but when forced extrusion, extrusion will become white, easy to aging and fall off in the future, resulting in leakage.
2018-04-141. Make clear the direction of the line: determine its direction according to the distribution requirements and design drawings; 2. Bury depth should be 0.7m underground, and 1 m underground when it is close to other cables or other pipelines.
2018-04-14There are generally three kinds of water intake for high voltage cables: 1. In the production process of cables, the inner lining is pulled out or degummed or leaky, and the water enters through the cooling water tank. The workers do not pay attention to it or find that it is not handled in time.