控制电缆的概况
Overview of control cables
从控制中心连接到各系统传递信号或控制操作功能的电缆统称控制电缆。控制电缆早期的功能比较简单，包括：指示灯显示、仪表指示、继电器和开关设备的操作、报警联锁系统等。近年来，由于弱电和计算机网络的广泛应用，对控制电缆的选择和应用提出了新的功能和更高的要求。本文就近年来控制电缆的选择和使用中出现的一些新问题，加以研讨，供研究参考。
The cables connecting the control center to various systems for transmitting signals or controlling operational functions are collectively referred to as control cables. The early functions of control cables were relatively simple, including: indicator light display, instrument indication, operation of relays and switchgear, alarm interlocking system, etc. In recent years, due to the widespread application of weak current and computer networks, new functions and higher requirements have been put forward for the selection and application of control cables. This article discusses some new problems that have emerged in the selection and use of control cables in recent years, for research reference.
二、控制电缆的主要系列品种
2、 The main series of varieties of control cables
当今控制电缆的主产品为：聚氯乙烯绝缘控制电缆、天然-丁苯橡皮绝缘控制电缆和聚乙烯绝缘控制电缆三大系列。此外还有交联聚乙烯绝缘和乙丙橡皮绝缘的产品。早年曾生产的油浸纸绝缘铅包控制电缆已经淘汰。
The main products of control cables today are three series: PVC insulated control cables, natural styrene butadiene rubber insulated control cables, and polyethylene insulated control cables. In addition, there are also products with cross-linked polyethylene insulation and ethylene propylene rubber insulation. The oil immersed paper insulated lead wrapped control cables produced in the early years have been phased out.
制电缆的额定电压用U0/U表示。我国1998年颁发的国家标准对塑料绝缘控制电缆的额定电压规定为450/750V
The rated voltage of the cable is expressed in U0/U. The national standard issued in 1998 in China stipulates that the rated voltage of plastic insulated control cables is 450/750V