在煤矿常见的30~C一60~C的环境条件下，煤矿用通信电缆的机械和电气性能保持不变。用于平巷、斜巷及机电硐室做通信线以及用于平巷，竖井或斜井作主信号传输。2、绝缘材料：高密度聚乙烯或聚丙烯，按照全色谱标准标明绝缘线的颜色。
使用条件：防水电缆线长期允许工作温度65℃。产品适用于潜水泵，煤矿，水下作业，水中景光灯等水处理设备，该产品采用高密度胶具有防水等功能用途：本产品用于计算机和自动化设备连接用电缆，它具有抗干扰、信号衰减小等性能。
导线与接线端子之间的接触电阻 > is shielded twisted-pair cable RVSP series on the basis of RVS coupled with a layer of copper wire shielding net, so the transmission loss, shielding the outside world better than RVS series, but because of the copper wire shielding network, its cost is also much higher than RVS series. Are often used to those who has a high requirement on the transmission. Technical indicators: polyvinyl chloride insulated cable long-term allowed working temperature over 70 ℃, the cable temperature under installation should not below 0 ℃, outer diameter (D) is less than 25 The allowable bending radius of mm cable shall not be less than 4 times the outer diameter of the cable. Diameter (D) of 25 mm and above of permissive bending radius of cable, not less than 6 times of cable diameter. The product description: this product is fit for ac rated voltage up to and including 450/750 power, electrical appliances, instruments, instrumentation, telecommunications equipment, lighting circuit and automatic device fixed installation, connection with a soft line, installed with a soft line and strong with shielded wire, according to the needs of use also can produce this kind of wire and cable fire retardant class (ZR), high flame retardant class (GZR), heat-resistant class (90 ℃, 105 ℃, 200 ℃, 250 ℃), low temperature resistant, nylon sheath, refractory (NH ), the company's main products: power cable control computer cable wire and cable wire and cable we specialized in wire and cable production and sales. Our products are high quality and low price, complete variety, there are all kinds of wire and cable, domestic orders can be delivery. We will with the high quality service to your satisfaction. If you have please telephone subscribers.
电缆允许弯曲关径应不小于电缆外径的6倍，敷设温度应不低于0℃。1、产品用途：本产品适用于仪表、仪器及其它电器设备中的信号传输及控制线路。一、产品简介本产品适用于额定电压500V及以下对于防干扰性要求较高的电子计算机和自动化连接用电缆。
WDZ-KYDYD22铜芯无卤低烟阻燃聚烃绝缘聚氯乙烯护套钢带凯装控制电缆。WDZ-KYDYDR22铜芯无卤低烟阻燃聚烃绝缘聚氯乙烯护套钢带凯装控制软电缆。WDZ-KYDYDP22铜芯无卤低烟阻燃聚烃绝缘聚氯乙烯护套铜线编织屏蔽、钢带凯装控制电缆。
弱电信号线|电话线|铠装电话线；电信局专用电话线；通信电缆-HYA电缆|HYA23电缆|HYA22电缆|HYA53电缆|室外电话线HYA53HYA53钢塑复合带铠装通信电缆;HYA|地面通信电缆|地面通信线缆,直埋市话线.AVVR型300/300V铜芯聚氯乙烯绝AVVR聚氯乙烯软护套线缘聚氯乙烯护套。
Low-smoke halogen free power cable single core cable conductor is round, 16mm2 and above can be pressed tightly. If the cross section of multi-core cable core is 35mm2 or below, its core should be round, and the cross section of wire core should be fan-shaped, tile or semi-circular at 50mm2 and above. The fourth core (neutral core) of a four-core cable can be round or fan shaped. The neutral line of five-core cable can be round or tile type 6mm2 or below. It is allowed to be composed of a single conductor. Forming conductors (fan-shaped, tile or semi-circular) shall be pressed tightly.
就该起事件来看，作业者也曾“现场反复核对了53P屏位正面面板和压板、左侧端子排”，说明作为专业继电保护工，还是有很强的安全意识和业务素养，怕出现误短接误跳开关，风险辨识是很到位的。面对几乎一个模样的端子排，或许他也曾对检修间隔与运行间疑惑和担心过，可惜还是在源头上出了问题，在二次设备及回路工作安全技术措施单将措施填写错误，为下一步传动误短接端子埋下了隐患。其本人、班组成员同样缺乏一种质疑的精神，是习惯了还是不清楚？事件往往是这样的，一步错，步步错，直至扩大后才恍然醒悟。
采用对绞、对屏、总屏（或三线组合、组屏蔽、组屏总屏）等结构形式，具有介质损耗小、传输传号能力强、抗干扰性能好等特点，能可靠地传输微弱的模拟信号，可广泛地应用于发电、冶金、石油、化工、轻纺等部门的检测和控制用计算机系统或自动化装置，以及一般的工业计算机上。
我国国家标准GB12666.6（等同IEC331）将耐火试验分A、B两种级别，A级火焰温度950~1000℃，持续供火时间90min，B级火焰温度750~800℃，持续供火时间90min，整个试验期间，试样应承受产品规定的额定电压值。
2、绝缘材料：高密度聚乙烯或聚丙烯，按照全色谱标准标明绝缘线的颜色。3、绝缘线对：把二根不同颜色的绝缘线按不同的节距扭绞成对，并采用规定的色谱组合以便识别线对。4、通信电缆缆芯结构：以1对为基本单位，超过25对的电缆按单位组合，每个单位用规定色谱的单位扎带绕扎，以便识别不同的单位。
产品在全国几十个煤业集团及矿山上使用，获得了较高的评价和赞誉。天津市电缆总厂第一分厂专业生产研发的市内通信电缆，电话电缆，大对数通信电缆，计算机电缆，通信设备电源线；铁路信号电缆，各种**性证书齐全，质量可靠。