合格标准为火焰不可蔓延到12英尺高的房间的上部。干线级电缆没有烟雾浓度规范，一般用于楼层垂直和水平布线使用。◎商用级-CM级（垂直燃烧测试VertialTrayFlameTest）这是UL标准中商用级电缆（GeneralPurposeCable），适用安全标准为UL1581。
Technical indicators: polyvinyl chloride insulated cables long-term allowed working temperature over 70 ℃, the cable temperature under installation should not below 0 ℃, outer diameter (D) is less than 25 mm cable bending radius is allowed, should not be less than 4 times of cable diameter; The outer diameter (D) shall be the allowable bending radius of 25mm and above cables, and shall not be less than 6 times of the outer diameter of cables.
Tianjin cable pull branch factory in line with the principle of "customer is", with "honest, trustworthy, thoughtful" service concept won the trust of the extensive business. I company for the pre-sale, sale, after-sales service promise as follows: 1, in order to deepen the understanding of our company, we welcome you, experts to visit factory, our company will provide accommodation and convenient work. 2. Provide customers with product price information and product quality information. 3, in order to ensure the products can good, our company adopts domestic high quality materials, and according to the requirements of ISO 9001 guarantee system, to strictly control the material purchasing and acceptance, unqualified material is strictly prohibited. 4. Our company strictly implements the system of self-inspection, mutual inspection and special inspection, and it is strictly prohibited to make any substandard semi-products run out of production. To organize the production according to the special technical requirements of customers and provide qualified products to customers. 5. The wires and cables provided by our company guarantee brand-new, mature and reliable performance and meet the requirements of customers or customers in all aspects. 6. Our company guarantees that the products provided by us can operate reliably and reliably under normal installation, normal operation and conditions.
多股铜芯聚乙稀绝缘聚乙稀护套阻燃钢丝铠装屏蔽控制电缆ZR-KVVRP32;和多股铜芯聚乙稀绝缘聚乙稀护套阻燃钢丝铠装控制电缆ZR-KVVR32;。多股铜芯聚乙稀绝缘聚乙稀护套阻燃钢丝铠装屏蔽双绞控制电缆ZR-KVVSP。
自承式电缆芯结构：以25对为基本单位，超过25吃饭的电缆按单位组合，每个单位规定色谱的单位扎带绕扎，以便识别不同的单位。100对及以上的电缆加有1%的预备对。自承式电缆缆芯包带：用聚酯薄膜带绕包。自承式电缆屏蔽：用轧纹或不轧纹金属带纵包子缆芯包带之外，两边搭接。
固态继电器是一种无机械触点的电子开关器件，其电路图形符号如下面所示。固态继电器由于无机械触点和其它机械部件，故其可靠性非常高、寿命长，在接通与关断切换的瞬间都不会产生电火花、并且无噪声，其开关速度相当快、工作频率也较高；又因这种继电器的输入与输出间采用了光电耦合器，因此还具有良好的抗干扰性能。单相固态继电器的另一个显著特点是控制输入单3+4一端子的驱动电压动态范围大，一般为直流DC10~18V，交流控制1~2~两个控制导通的控制桩的交流电压也在AC24~380V，控制电流这要看固态继电器上的标注的额定控制电流数值。
HJYVZR/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、组合软结构呼叫通信电缆。HJYVPZR/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、编织总屏蔽组合软结构呼叫通信电缆。HJYVP2ZR/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、铜塑复合带绕包总屏蔽组合软结构呼叫通信电缆。
3、矿用控制电缆产品型号规格及范围： 矿用控制电缆型号 规格范围 使用场合MKVV,MKVVP,MKVVP2 0.5-10mm2,2-61芯 适用于弱电控制系统或强电磁场干扰区MKVV22,MKVV20 0.5-10mm2,4-61芯 MKVV32,MKVV30 0.5-10mm2,7-61芯 M。
6XV1830-0EH10L2电缆2芯屏蔽（PROFIBUS总线电缆）天津西门子（原6XV1830-0AH10已升级为6XV1830-0EH10） 符合VDE0472标准；B类试验（IEC332.1）。
计算机屏蔽控制电缆一、产品特点及用途：用于连接电子计算机外围设备至生产现场，以及各种电器、仪表、自动装置等需要的屏蔽控制电缆。2.基本型号绝缘及护套材料还有YJ无卤低烟阻燃交联聚烯烃。金属屏蔽电力电缆适用于额定电压0．6／lkV及以下的电力线路中作输送电能用。
This is the flame retardant standard for bundles of cables. According to the test regulations, the 3.5m long cable samples are fixed with iron wire on the trapezoid test frame, and the number of samples is determined according to the different classification requirements of non-metallic materials. The sample is hung vertically on the back wall of the furnace, and air is introduced into the furnace through the inlet on the bottom plate.
2.电缆应带有供保护接地用的足够截面的导体。3.严禁采用铝包电缆。4.必须选用经检验合格的并取得煤矿矿用产品安全标志的阻燃电缆。5.电缆主线芯的截面应满足供电线路负荷的要求。6.对固定敷设的高压电缆要求：（1）在立井井筒或倾角45°其以上的井巷内，应采用聚氯乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆、交联聚乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆。
事实上，配电箱里的所有零线都从零排上取（支路开关或用电终端）或所有零线都从开关下口取，也是可以正常使用的。其它断路器不需要从零排取线除了1P断路器（还有三相电路用到的3P断路器）以外，其它所有断路器都不需要从零排取零线。比如1P+N断路器1P带附件的断路器（下图带的是漏电保护器附件）2P断路器还有2P带附件的断路器看出区别了吗？这些断路器都有两组接线柱（两个进线两个出线），因此它们可以从零线的出线位置取零线。
煤矿用控制电缆 MKVVMKVV22MKVV32MKVVRMKVVRP MKVVP煤矿用控制电缆产品执行标准：MT煤矿用控制电缆用途：本产品适用于交流额定电压u0/u为450/750V及以下的控制监控回路及保护线路和配电装置中电器仪表的连接线。
DJYDP3YD(R)低烟无卤阻燃聚烯烃绝缘和护套铝塑复合带绕包分屏计算机用屏蔽(软)电缆。DJYDP3YD(R)P3低烟无卤阻燃聚烯烃绝缘和护套铝塑复合带绕包分屏总屏计算机用屏蔽(软)电缆。 DJVP2VDJYP2VDJYJP2V铜塑复合膜分对屏蔽。
3性能聚氯乙烯绝缘交联聚乙烯绝缘体积电阻率ρΩ.㎝20℃时电缆工作温度时-1012绝缘电阻常数KiMΩ.㎞20℃时电缆工作温度时36.70.03673.67金属屏蔽变频电力电缆产品特点及用途本产品适用于交流额定电压0.6/1KV及以下变频控制系统作供电电缆或电气连接线，产。
Identification and length marking: there is a permanent identification mark on the cable surface and the marking interval is not more than 1m.