欧美精品中文字幕久久二区_亚洲 中文 欧美 日韩 在线_成人一区视频_亚洲精品乱码久久久久久蜜桃动漫_中文字幕高清在线中文字幕_久久久99精品免费观看_无码精品国产一区二区免费_三级成年网站在线观看_色欧美成人精品_99国产欧美精品久久久蜜芽_成年女性免费视频_狠狠躁夜夜躁人人爽天天bl_国产白嫩受无套呻吟_日韩性网站_免费无码av片在线观看_午夜伦理福利视频_久久精品国产亚洲a∨麻豆_国产超碰人人模人人爽人人喊_欧美福利第一页_人妻少妇久久中文字幕456

The high rated temperature of the cable conductor is 90 ° C. In the event of a short circuit (with a long duration of no more than 5 seconds), the high temperature of the cable conductor does not exceed 250 ° C.

The high rated temperature of the cable conductor is 90 ° C. When a short circuit occurs (with a long duration of no more than 5 seconds), the high temperature of the cable conductor does not exceed 250 ° C.

The description of fire-resistant wires and cables refers to cables that can maintain normal operation under specified test conditions and burn in flames for a certain period of time.

In addition to the above standards, flame retardant cables are classified into three different flame retardant categories: A, B, and C according to the GB/T18380.3-2001 standard. The flame retardant performance of Class A is excellent, and users can choose according to their needs.

1. The long-term allowable working temperature of cable conductors shall not exceed 70 ℃; 2. During a short circuit (* * * lasting for no more than 5 seconds), the high temperature of the cable conductor shall not exceed 160 ℃; 3. The ambient temperature during cable laying should not be lower than 0 ℃.