ZR-VCP-301组合电缆结构格小金市场行情MKVVR3X1.0矿用软芯控缆首肯

ZR-VCP-301组合电缆结构格小金市场行情MKVVR3X1.0矿用软芯控缆首肯

　　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。



　　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。

　　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。

　　PEV-SCPEV-S通信电缆|CPEV-S|CPEV-S电缆CPEV-S绞式聚乙烯绝缘聚氯乙烯护套市内通信电缆市内通信电缆执行YD/T标准-产品介绍-市内通信电缆|市话通信电缆|通信电缆HYA|充油通信电缆HYAT|自承式通信电缆HYAC|铠装通信电缆HYA53，HYAT53，HYA23，HYAT。



　　2、产品标准：GB12706•2-91额定电压35KV及以下铜芯、铝芯塑料绝缘、聚氯乙烯绝缘电力电缆3、使用特性：1）电缆导体的高额定温度为70℃。2）短路时（长持续时间不超过5S）电缆导体的高温度不超过160℃。

主回路动作原理相对很简单，可以快速的把握整个电路是做什么的，这样比较好联想到类似的基本控制电路，这样再去看二次控制回路就相对简单多了。2，快速看图：从上到下看图。正规的电路图都是从上到下逐步阐明电路的保护，控制和原理的。二次回路的控制也同样如此，从上到下的看电路图能够事半功倍。3，二次回路分部分来看。一般的电路图都会在图纸的右侧或者下侧标明相应的回路是做什么的，或者具有什么作用。这个时候分部分来看，将控制回路分开为：保护电路，测量电路，控制电路等部分来看，有助于快速的把握原理。

　　2.电缆高长期工作温度（1）阻烯聚坲乙烯绝缘及护套：70℃和105℃两种；交联聚乙烯绝缘：90℃；（2）氟塑料绝缘和护套：220℃和260℃两种；氟塑料绝缘和105℃阻燃聚氟乙烯护套：90℃和125℃两种。

Because of the refractory layer of the refractory cable, the multi-layer mica belt is usually used to wrap directly around the wire. It can withstand long periods of time, even if the polymer at the point where the flame is applied is burned down, it can keep the line running.
This company produces the type refractory power cables for rated voltage 0.6/1 kv copper core cable, can also produce low smoke zero halogen fire-resistant power cable, high flame retardant fire-resistant power cable oxygen insulation layer, the fire-resistant performance in line with the GB/T12666.6 cable fire resistance test method. Therefore, the overall performance of refractory series power cables is good and reliable. The water resistance performance of fireproof cable conforms to iec 502-2.

　　 （2-61芯）ZR-KVV32MKVV32MKVVMKVV22MKVVRMKVVRP32VVR32ZR-VVR32 ZR-KVV32 ZRC-KVV32 ZRA-KVV32 ZR-KVVP32ZR-KVV32型号阻燃屏蔽控制电缆型号ZR-KVVR32控制电缆型号 KVV控制电缆型号KVV。



　　IEC/BS4066-1阻燃等级（单根电线或电缆垂直燃烧测试FlameTestOnSingleVerticalInsulatedWires/Cables）这是单根电缆的阻燃标准。阻燃电缆◎IEC/BS4066-3阻燃等级（成束电线或电缆垂直燃烧测试FlameTestOnBunchedWires/Cables）这是成束电缆的标准。

Sales production of various kinds of flame retardant communication cable communication cable | | flame retardant flame retardant control cable | | mining coal mine by signal cable communication cable communication cable | | mine mine control cable | mine signal cable communication cable | | | | mining cable signal cable communication cable with cable | | coal mine city communication cable shielding signal cable shielding control cable | | | armoured communication cable | oil filled telecommunication cable shielding cable | computer | computer | coal mine cable communication cable | | bearing type coal mine communication cable with control cable | | coal mine mining flame-retardant cable | | | plastic insulated control cable railway signal cable Letter power with flame retardant flexible cable | | flame-retardant cable for mine to monitor cable, communication cable in the city the main products are: manufacuring HYA, HYAT, HYAC, HYA53, HYAT53, HYA23, HYAT23, HPVV, ZRC - manufacuring HYA, HYAP, mine cable main products are: MHYV, MHYA32, MHYAV, MHY32, MHYVR, MHYVP, MHYVRP, MKVV, MKVV22, MKVV32 and so on, all kinds of products are all in the coal Ann sign certificate, complete specifications, products widely used in the monitoring system of coal mine and coal mine system. The products have been used in dozens of coal industry groups and mines across the country, and have won high evaluation and praise.

但是蜂鸣器的压降很难获知，而且有些蜂鸣器的压降可能变动，这样一来基极电阻阻值就很难选择，阻值选择太大就会驱动失败，选择太小，损耗又变大。d电路也会出现同样的问题，所以不建议选用图二的这两种电路。图三这两个电路，电路的驱动信号为3.3VTTL电平，常出现在3.3V的MCU电路设计中，如果不注意就很容易就设计出这两种电路，而这两种电路都是错误的。先分析e电路，这是典型的“发射极正偏，集电极反偏”的放大电路，或者叫射极输出器。

　　把单根绝缘线按不同节距扭绞成对，以大限度地减少串音，并采用规定的色谱组合，以便识别线对。缆芯：:缆芯结构以25对为基本位，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包扎，以便识别不同单位。



Main transmission cable MHYVP 2 * 2 * 2 * 7/0.52 performance: 1. + 20 ℃ dc resistance wire 7/0.28 or less 45 Ω 1/0.8 / Km 36.7 or less Ω/Km, 2. + 20 ℃ wire insulation resistance 3000 M or more Ω. Km3. The line capacitance (800 ~ 1000 hz) to work or less 0.06 uF/km4. The far end crosstalk attenuation (800 ~ 1000 hz) or 70 dB/km5. Inductance (800 ~ 1000 hz) 800 or less mH/km6 resistance ac power frequency voltage 1.5 KV / 403 to the characteristics of the main transmission cables MHYVP 2 x 2 x 7/0.52 by: Mhy MT818.14-1999 1/0.8 (20 30 x 2 x 2 x 2) 50 x 0.8 coal mine with insulating aluminum bonding layer of PVC sheathed communication cable used in deviated well and drift MHYV (1 1 x 2 x 2 x 2, 4, 5 x 2) x 7/0.28 coal mine by polyethylene insulated PVC sheathed communication cable for mine roadway inclined lane and electromechanical cavern MHJYV 4/0.28 wire + 3/0.28 steel wire 1 2 x 2 x 2 coal mine with strengthening core polyethylene insulated PVC sheathed mining communications cables used for mechanical damage is higher level and inclined lane MHYA32 (30 x 2, 50 x 2, 80 x 2) x 402 coal mine e introduction mining communication cable: purpose: this product is used for underground telephone communication welding line, distribution line and user line. Conditions of use: cable temperature - 40 ℃ ~ + 50; At 25 ℃ when the humidity is 95%; Cable laying temperature - 10 ℃ or higher; The bending radius of MHYV for cable laying is 10 or greater

Our products are widely used in all major coal mine systems and coal mine monitoring systems. Sales to coal companies and mining groups throughout the country; And become a number of mining e companies supporting products, established long-term cooperation relations, products have been users praise and trust! The city at the same time my company production of all plastic communication cable, telephone cable, big logarithmic communication cable, computer cable, power cord of communication e and railway signal cable, airport with flare path, various documents are complete, reliable !!!!!

　　导线与接线端子之间的接触电阻