矿物绝缘电缆是耐火电缆中性能较优的一种，它是由铜芯、铜护套、氧化镁绝缘材料加工而成的，简称MI（minerlinsulatedcables）电缆。
该电缆完全由无机物构成耐火层，而普通耐火电缆的耐火层是由无机物与一般有机物复合而成，MI电缆的耐火性能较普通耐火电缆更优且不会因燃烧而分解产生腐蚀性气体。
聚氯乙烯绝缘钢带铠装、聚氯乙烯护套、阻燃电力电缆序号型号名称使用范围1ZR-VVZR-VLVZR-VYZR-VLY阻燃聚氯乙烯绝缘阻燃聚氯乙烯/聚乙烯护套动力电缆敷设在室内、隧道及管道中，电缆不能承受机械外力作用ZR-VV22ZR-VLV22ZR-VV23ZR-VLV23阻燃聚氯乙烯。
适合任何弱电安防工程使用。
由于在芯线的外面包有一层铜丝屏蔽层，适合于在一些干扰比较大的地方使用，亦可用于对传输的信号要求严格的场合。
主要用于各种家用电器、仪器仪表、监控等设备的内部连接、控制信号的传递。
使用条件1：使用温度（℃):-40～+602:相对温度:40℃时达98%3:安装敷设温度不低如:-15℃4:充许最小弯曲半径:室内不小于5倍,室外10倍结构1:镀锡铜丝线芯2:聚氯乙烯绝缘3:薄膜绕包/镀锡铜丝编织网屏蔽4聚氯乙烯护套额定电压:300V/300V300V/500V采。
额定电压：交流300V及以下；导线线芯最高工作温度：70℃和105℃两种；最低环境温度：固定敷设-40℃，非铠装不小于电缆外径的6倍，铠装或铜带屏蔽不小于电缆外径的12倍。
DJYPV-聚乙烯绝缘铜丝编织分屏蔽聚氯乙烯护套电子计算机用电缆，DJYVP-聚乙烯绝缘铜丝编织总屏蔽聚氯乙烯护套电子计算机用电缆。
三线制变送器如图三所示，所谓三线制即是电源正端用一根线，信号输出正端用一根线，电源负端和信号负端共用一根线。
其供电大多为24V.DC，输出信号有4-20mA.DC，负载电阻为250Ω或许0-10mA.DC，负载电阻为0-1.5KΩ；有的还有mA和mV信号，但负载电阻或输入电阻，因输出电路方式不一样而数值有所不一样。
以上三个图中，输入接纳外表的是电流信号，如将电阻RL并联接入时，则接纳的即是电压信号了。
Propane burner plane with the flame of 750 ℃ and contact sample, sample in the compulsory blowing (5 m3 / min air emissions, wind speed 0.9 m/s), must be in vertical flame combustion is not up to 20 minutes, cable within 2.5 meters flame spread out on his own. IEC60332 is divided into A, B, C and D to evaluate the flame retardant performance.
二：氟塑料高温补偿导线产品执行标准：GB/T等效采用IEC584-3标准)三：氟塑料高温补偿导线使用特性1．导体最高工作温度：耐热级：聚全氟乙丙烯(F46)200℃可溶性聚四氟乙烯260℃，，，，硅橡胶180℃普通级：聚氯乙烯70℃和105℃，交联聚乙烯90℃低烟无卤阻燃聚烯烃70℃，交联型90℃和。
也可提供双层护套的通信电缆。
MHYV（PUYV）（1×21×42×23×24×25×26×28×210×2）1/1.0、1/1.38聚乙烯绝缘聚氯乙烯护套煤矿用通信电缆用于矿场作普通信号传输，适用于固定敷设。
2、用途：用作短距离的信号传输。
3、HPVV100*2*0.5配线电缆价格是31.4元产品型号规格及范围：HPVV0.4-0.8mm5-400对适用于线路的始端和终端，供连接市内电缆至分线箱或配线架之用。
(3)敷设时电缆时的环境温度不低于0℃，电缆弯曲半径单芯电缆：无铠装电缆不小于电缆外径的20倍，铠装电缆不小于电缆外径的15倍：多芯电缆：无铠装电缆不小于电缆外径的15倍，铠装电缆不小于电缆外径的12倍。
DJYPV(R)P22聚乙烯绝缘铜丝编织分屏总屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
DJYV(R)P2-22聚乙烯绝缘铜带绕包总屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
DJYP2V(R)22聚乙烯绝缘铜带绕包分屏聚氯乙烯护套钢带铠装计算机用屏蔽(软)电缆。
PCB的设计质量不仅直接影响到电子产品的可靠性，还关系到产品的稳定性，甚至是设计成败的关键。
在进行PCB设计时，除了要为电路中的元器件提供正确无误的电气连接外，还应充分考虑印制板的抗干扰性。
基于电磁兼容性原则，抗干扰设计应包括三个方面：一是抑制噪声源，二是切断噪声传递途径，三是降低受扰设备的噪声敏感度。
印制板的噪声抑制应从设计阶段开始，贯穿于电路原理图设计、印制板图设绘、元器件选用、印制板安装引线等一系列环节中。
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MHYVP 2 * 3.3+2 * 0.85 data for mine shielded communication cable 1. Tin coated copper wire is used for conductor, 47/0.3 for conductor, 12/0.3 for 0.85, and 7/0.28 tin coated copper wire for drainage line. 2. Insulation color: 3.3 the wire core is a red one and a blue one, while the 0.85 wire core is a white one and a green one. The white wire core is wrapped with aluminum foil. 3. Insulation thickness: 3.3 core insulation thickness is 0.5, and the outside diameter after insulation is 3.5 mm. The insulation thickness of wire core is 0.7 and the outside diameter after insulation is 2.5mm. 4. Into line with the four wire core is arranged for red, green, blue, white, streamline, and row streamline to conductors are twisted together, don't put longitudinal, are not added when cabling filler, external use aluminum foil winding and cable core, then a layer of polyester film around the package, the outside is a layer of copper wire braided shielding (shielded copper wire tin plating). 5. Sheath: the front diameter is 8.2mm, the back diameter is 12mm (between 11.7mm and 12mm), and the sleeve is flame retardant blue
MHY32(PUYV39、PUYV39-1)矿用聚乙烯绝缘阻燃聚氯乙烯护套单层钢丝铠装井筒矿用信号电缆用于斜井或竖井中作主信号电缆MHYVRP(PUYVRP)矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽软矿用信号电缆用于井下平巷或斜巷作矿用信号电缆MHYVP(PUYVP)矿用聚乙烯绝缘阻燃聚氯乙烯护套。
This product USES features: 1.1 the use of the cable temperature - 40 ℃ ~ + 60 ℃. 1.2 cable conductor long-term working temperature shall not exceed + 70 ℃. Cable laying temperature 1.3: PVC sheathed cable should not below 0 ℃; Polyethylene outer sheath cable should be not less than 20 ℃. 1.4 allowable bending radius of cables: non-armoured cables shall be no less than 10 times of the outer diameter of cables; The armored cable shall not be less than 15 times the outer diameter of the cable. 1.5 the ideal shielding coefficient of comprehensive sheathed railway signal cable is less than 0.8; The ideal shielding coefficient of aluminum sheath railway signal cable is less than 0.3