产品用途：敷设在室内、电缆沟、管道等要求阻燃静电屏蔽的场合 序号产品名称产品型号芯数导体截面(mm²)1氯乙烯绝缘及护套复合带总屏蔽计算机电缆ZR-DJYVP31-150.5-2.52铝-塑复合带分-总屏蔽聚氯乙烯护套计算机电缆ZR-DJYP3VP31-150.5-2.。
本公司生产的耐火型动力电缆为额定电压0.6/1KV铜芯电缆，还可以生产低烟无卤耐火动力电缆、高阻燃隔氧层耐火动力电缆，其耐火性能符合GB/T12666.6《电线电缆耐火特性试验方法》。
耐火系列动力电缆的整体性能优良可靠。
●三相系统用电缆的Uo值推荐如下表：UkvUmkvUo*kvA和B类系统C类系统67.23.66101268.71517.58.71220241218303618-3540.52126A类系统--该类系统任何一相导体与地或接地导体接触时，能在1min内与。
Levels have pressurization - CMP (air/air duct, sodium experiment Plenum Flame/Steiner Tunnel) this is the requirements of the Cable UL fire (Plenum Cable), applicable for UL910, experimental regulations at the levels of device duct laying on multiple samples, with a 87.9 KW gas Bunsen burner (300000 BTU/Hr) for 20 minutes. Qualified for flame does not extend 5 feet away from gas lamp flame front.
为了减少回路间的相互串扰和外部干扰，电缆采用屏蔽结构。
电缆的屏蔽要求是根据不同场合分别采用：对绞组合屏蔽、对绞组成电缆的总屏蔽、对绞组合屏蔽后总屏蔽等方法。
屏蔽材料有圆铜线，铜带、铝带/塑料复合带三种。
笔者本人遇到过这样一件事，一台水冷空调的风机电机(三相380v1.5kw，2极)用500V摇表测量电动机的绕组对外壳绝缘时，读数几乎接近零兆欧，但电动机照常运行，用钳形表测电机电流三相正常。
但该电机外壳严重漏电，幸好水冷空调安装在高处，不易触及。
停机打开电机检查，主要是绕组受潮，并未直接短路或接地，用万用表电阻档测量其相线对外壳电阻已经降低至7KΩ。
后烘干处理，至今正常使用。
以上就是本人的一点工作经验欢迎广大同行共同讨论学习。
最高传输频率分别为30MHz与100MHz。
ia-K2YVR本安型PE绝缘PVC护套二芯绞合屏蔽控制软电缆适用于要求柔软的场合。
还可定做行车控制电缆，柔性控制电缆，扁平控制电缆等特种电缆。
我厂生产的产品有：，矿用橡套电缆。
ZR-BPGVFP硅橡胶绝缘丁腈护套铜丝编织屏蔽耐高温变频电力电缆。
ZR-BPGVFP2硅橡胶绝缘丁腈护套铜带绕包屏蔽耐高温变频电力电缆。
ZR-BPGVFPP2硅橡胶绝缘丁腈护套铜丝编织铜带绕包屏蔽耐高温变频电力电缆。
Purpose: the self-supporting non-filled cable is suitable for the urban and township telecommunication lines of local telecommunication network, and also for the special network lines connecting to the public network. It is economical and practical to use the same outer protective layer for hoisting line and cable. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C. Structure: wire: annealed bare copper wire, copper wire diameter is 0. 4, 0. 50, 0. 60, 0. 70, 0. 80, 0. 90 mm. Insulating material: high density polyethylene or ethylene-propylene copolymer. The color of the insulated wire is in accordance with the full chromatographic standard. Pair of insulated wires: two different colored insulated wires are twisted in pairs according to different pitch and are identified by a specified chromatographic combination. Core structure: with 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, each unit is wired with the unit of specified chromatogram to identify different units. 100 pairs or more of cables plus 1% of the reserve pair. Core tape: wrap with a polygrease film tape. Shielding: the two sides are overlapped with or without corrugated metal strip, beyond the cable core of the longitudinal capsule. The plastic film coated on the surface of the shielding belt and the bonding sheath of the protective layer: black low density polyethylene. Hoisting line: the hoisting line is 7 strands of galvanized steel strand, nominal outside diameter is 6. 3 and 4 mm. The tensile strength of two types of 75mm is not less than 3000kg and 1800kg respectively. The suspension wire is coated with thermoplastic paint to prevent the steel wire from corrosion. Identification and length marking
The cross section of the control cable is generally no more than 10 square meters, and the power cable is mainly used to transport power, which is generally large. Due to the above all when it comes to the reason, the specifications of the power cable can generally larger, to 500 square feet (normal manufacturer can produce range), again big cross section of the general factory is relatively less, you can do and control cable section generally small, generally not more than 10 square, tell from some cable, power cable according to the demand of power grid more generally for 5 core, and control cable transmission control, some more, according to the terms of more than 61 core, but also can produce according to user requirements.
3接线模块的结构、排列及安装尺寸与3M公司产品完全一致，可以互相通用。
4箱体经静电喷塑处理，美观大方，线条清晰、防腐防水性能好使用寿命长。
主要技术参数：环境温度：-40℃~+65℃大气压力：70～106KPa相对温度：≤95％任意两端及任一端子与接地之间的绝缘电阻>5×104ΜΩ。
0.5-1.5mm21-84对（3线组）用于电子控制装置、自动化系统、数字验检、计算机回路及其它一般工业计算机检测装置上。
例如：ZR-DJYPVZR-DJYPVP等（2）铠装型（钢带铠装）电缆需在型号右下角加代号“22”例如：DJYPV22DJYPVP22等。
，弄清了视频监控的各部分的理论知识和视频监控系统的组成以及作用后，你就可以提出问题了，提出问题是学习的关键。
提出问题证明你思考了，才会记得牢，学的快。
3，在你平时的物业强电工作中多多留心注意身边的监控系统：摄像头，视频线，电源线，电源模块，同轴电缆，BNC接头，网络接口，硬盘录像机等等，比较实物和理论能让你快速成长。
4，在日常工作中不断提出问题，：硬盘录像机什么作用？都有哪些接口，分屏怎么处理？模拟摄像头和数字信号摄像头什么区别？之后借助书籍或者网络寻求当然，有条件的话可以去请教弱电师傅们，这样针对问题成长会非常快。
Fire - resistant cable is able to maintain a certain period of normal operation under the condition of flame burning, can maintain the integrity of the line. That, when burned, fire-resistant cable less acid gas smoke, fire flame retardant performance is greatly improved, especially when burnt, accompanied by water jet and mechanical blow, cable still can maintain a full operation.
HYA：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套市内通信电缆HYAT：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套市内通信电缆HYAC：铜芯实心聚烯烃绝缘自承式挡潮层聚乙烯护套市内通信电缆HYA53：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装聚乙烯护套市内通信电缆HYAT53：铜芯实心聚烯烃绝缘填充式挡潮层。
代号、名称及含义项目代号含义系列代号DLDWLDK低烟低卤低烟无卤控制电缆绝缘材料VJEF聚氯乙烯交联聚烯烃丁腈热塑体护套材料VGS聚氯乙烯热固性护套热塑性护套屏蔽材料PP2铜网或镀锡铜网铜带/塑复合带铠装材料2232钢带细钢丝导体种类ABR独股导体7股绞合导体多股绞合导体生产范围截面(mm2)：0。
ZR-KVVPZR-KVVP2ZR-KVV22ZR-KVV32ZR-KVVPZR-KVVRP1、用途：本产品供交流额定电压500V或直流电压1000V及以下配电装置中电器，仪表接线之用。
2、产品使用特性：电缆导体的长期允许工作温度应不超过70℃。