护套材料
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电缆的外层覆盖材料,提供物理保护并决定柔韧性和防火等级。
PVC是最常见的护套材料——价格便宜且柔韧,但燃烧时会释放有毒烟雾。TPE(热塑性弹性体)更柔软,耐用性更好,适用于消费级电缆。尼龙编织护套可防止缠绕和磨损。通风管道级电缆使用低烟FEP或LSZH护套,符合建筑规范对空气处理空间的要求。