The company solemnly declares: 1. Sign the product guarantee letter, and promise that the unqualified products will never leave the factory. 2. Product tracking service within two years and keep records in the archives for 20 years. 3. Due to product problems, our company will guarantee, refund, replacement and customer requirements.
(如计量测试、信号显示、自测遥测、计算机联网、报警等)产品型号：KVVR软芯聚氯乙烯绝缘聚氯乙烯护套控制电缆应用标准：GB9330.2电缆结构：导体：单根粗铜丝或多根精细铜丝绝缘：PVC/A型聚氯乙烯绝缘填充物：PP带或无纺布包裹缓冲护套：PVC/ST5聚氯乙烯护套颜色：黑色(RAL9005)灰色(。
多年的“计算机电缆R;DJYPVPR22;DJYPVPR32;DJYJPV,DJVPVP,DJYPVP,DJYJPVP电子计算机电缆DJYVPR;D。2.使用特性1额定电压U0/U为300/500V及以下。
HYA internal communication cable (widely used in the construction of man communication network, mainly for overhead and pipeline installation, mainly for transmission of audio); HYAT packed communication cable (used in the construction of man communication network, mainly for pipeline installation, with water resistance effect, no need for inflation protection, mainly for transmission of audio); HYAC self-supporting communication cable (used in the construction of man communication network, overhead installation, convenient construction, mainly transmitting audio); HYAT53 filled armoured cable (HYA, a complex communications cable used in metropolitan area network construction); HYAT; HYAC manufacuring HYA communication cable type HYAC HYAT HPVV HYV HJVV HYY armoured communication cable HYA22 HYV22 HYAT22 HYY23 HYYT23 HYA23 HYAT23 HYA53 HYAT53 steel wire armoured communication cable H YA33 HYAT33 WDZ - HYA53 HYY33 HYYT33 HYY33 oil filled telecommunication cable HYAT HYYT execution: YD/T322-1996 structure features: Manufacuring HYA communication cable insulation using chromatography in the city, lu: su composite sheath of cable is applied to longitudinally wrap shielding ribbon and sheath bonded into an organic whole, forming sealing layer, has the superior electrical properties, the characteristics of the construction is convenient. Main electrical properties: 1. The dc resistance: 20 ℃, the copper wire 0.5 mm, less than or equal to 95 Ω/km. Insulated electrical strength: 2. 1 min 1 kv no breakdown between the conductor and conductor shielding 1 min 3 kv is not breakdown (3) insulation resistance: each conductor and the rest of the grounding wire core, more than 10000 m Ω manufacuring HYA cable. Km, more than 3000 m Ω HYAT cable. Km. 5. Remote crosstalk defense: 150kHZ, the average power of the combination is greater than 69dB/km. Mine communication cable: 1. Execution: mt818.14-1999 2 purpose: this product is used in well
RS485通讯线结构:1)导体:多股绞合镀锡铜网线,每股7支,每支导体线径为0.30mm,共四股导体，外径:0.91+/-0.03mm2)绝缘:实芯PE绝缘,外径:1.90+/-0.03mm3)第一屏蔽:铝箔屏蔽4)引流线:多股绞合镀锡铜网线,每股7支,每支导体线径为0.30mm,共一股,外径:0.。
以下是大概方法，供各位朋友交流参考，不对之处请指正。首先要了解下什么是无协议通讯和MODBUS协议通讯。根据度娘所说：所谓无协议通讯就是说通信网络的两个或多个终端通过通信网络实现数据的传输，而不必遵循共同的规定或规则。Modbus协议是应用于电子控制器上的一种语言。通过此协议，控制器相互之间、控制器经由网络（以太网）和其它设备之间可以通信。此协议定义了一个控制器能认识使用的消息结构,而不管它们是经过何种网络进行通信的。
Signal cable for mining is a signal transmission tool. General signal cable transmission signal is small, in order to avoid the interference signal, signal cable with a layer of shielding layer, outside package of conductor shielding layer, generally for conductive cloth, woven or copper (aluminum), the bronze shield to ground, external interference signal can be the layer into the earth, and avoid interference signals into the inner conductor interference at the same time reduce the wastage of the transmitted signal.
在一定条件下，也可用于传输2048Kbit／S以上的数字信号。在一30℃～+60℃的环境条件下，电缆保证长期、可靠的运行。结构导线：铜线直径为、0．40、O．50、O．60、0．70、O．80、O．90mm。
二、执行标准MT/TQ/TY《煤矿用阻燃射频同轴电缆》。适用于室内、管道及一般工业环境。使用时，屏蔽层一端接地。普通双绞屏蔽型电缆STP-120Ω（forRS485&CAN）onepair18AWG，电缆外径8.2mm左右。
HYAT填充式通信电缆（使用于城域网通信网络建设中，以管道安装为主，有阻水效果，无须充气保护，主要传输音频信号。HYAC自承式通信电缆（使用于城域网通信网络建设中，架空安装，施工方便，主要传输音频信号。
适用于大型建筑、石油、冶金、化工、电力、舰船等要求防火安全较高场合的动力装置连接。二、使用特性：1．额定电压(AC)：U0/U0.6/1kV2．导体长期允许最高温度：见基本型号后3．最低环境温度：固定敷设-40℃；非固定敷设-15℃。
本厂主要生产铁路信号电缆，主要是指铁路专用信号电缆，适用于额定电压交流500V或直流1000V及以下传输铁路数字信号、音频信号或自动信号装置的控制电路。4.铁路信号电缆特性：电缆的使用环境温度为-45～+60℃，敷设的环境温度不低于-10℃。
不要只在家庭总线路上安装一个漏电保护器，一个漏电保护器保护的范围越广，跳闸的机率和频率就会越大。所以除了在总线路上安装一个漏电保护器外，在很可能发生漏电且容易发生触电的地方也装设一个，这样即使有地方漏电，也不会导致整个家中全面的停电。使用合格的用电器，不要只为了贪图便宜。便宜的电器做工肯定不好，材料的质量以及相应的保护措施不完善，隐形中就埋下了隐患。一般的人可能会想，我用了这么长时间了也没啥事啊，不要总担心这担心那，没必要。
Cable length: mechanically protected cable is manufactured according to the standard length of the corresponding basic cable.
一些如铁路信号电缆、汽车电线、矿用电缆、海上采油平台电缆等会有较大的需求增长。在国家建设中，铁路信号电缆应用广泛，在轨道交通建设中也有大量应用，是高速铁路及轨道交通建设不可或缺的电缆产品。我国自2011年起，已经跃居***一大线缆制造国，也被称为全球电线电缆消费增长最快的国家，但不得不正视的是，目前我国人均电线电缆消费水平仅为发达国家的五分之一，相当于拉美国家水平。
Low smoke zero halogen flame retardant cable insulation using crosslinked poly (do not contain halogen, sheath used do not contain halogen polyethylene thin hydrocarbon material, so the set of all materials do not contain halogen, chung cable cable released when small amounts of smoke, it won't produce a strong acid mist, functioning, toxicity is small.
ZR-FV、ZR-KFF、KFFP、KFFP2、FV22 KFFR、KFFRP、KFFRP2、DJFPFP、DJFPFPR具体的型号有：ZR-KHF4、ZR-KHF4R、ZR-KHF4P、ZR-KHF4RP、KHF4、KHF4R、KHF4PR、KHF4P、KHF4RP、ZRC-KHF4、ZR-K。