MKVVR4X1.0矿用软芯控制电缆格镇海诚信至上低烟无卤环保型通信电缆WDZ-HPVV讲究阻燃电缆指标1．成品电缆导体(R类)直流电阻(符合GB3956规定)2．工频电压试验：交流50HZ3.5KV/5min不击穿IEC阻燃等级为了评定线缆的阻燃性能优劣，分别制定了IEC、IEC和IEC三个标准。
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 equipment 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 equipment and railway signal cable, airport with flare path, various documents are complete, reliable quality!!!!!
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
电子计算机用屏蔽电缆本产品技术指标参照IEC189和英国BS53081、用途电子计算机用屏蔽电缆，选用介电常数小的高压聚乙烯绝缘，采用对绞、对屏、总屏（或三线组绞合、组屏蔽、组屏总屏）等结构组成，具有介质损耗小、传输信号能力强、抗干扰性能好特点，能可靠地传输微弱的模拟信号或数字信号，可广泛地应用于发。
High insulation resistance, good voltage resistance, low dielectric coefficient and low dielectric loss temperature and variation of the medium can not only meet the requirement of transmission performance, but also ensure the service life of the cable.
从电厂来看，二次系统来历来是部分电厂的瓶颈和短板。
从继电保护来看，电网方面对保护动作指标要求极高，误动、拒动将面临停产风险。
而保护调试、定检、核心维护和技改，基本是依赖试验单位或厂家，运维任重而道远。
从通信自动化自动化来看，对通信、自动化厂家过于依赖，缺乏自主、核心运维力量。
而电网方面，对实时数据的可靠性和准确性要求愈发要求严格，尤其是“两个细则”中对一次调频、AGAVC提出更高要求；网络防护、等级保护、电力监控系统防护和网络安全工作提高到国家层面，监管和处理也愈发严肃。
煤矿用电缆名称对应的型号为：采煤机电缆MCMCPMCPTJMCPT-3.3KV及以下煤钻电缆MZMZP-0.5KV矿用移动电缆MYMYPMYPTMYPTJ-6KV及以下矿用轻型电缆MYQ-0.5KV矿用控制电缆MKVVMKVVRMKVVPMKVVRP-750KV矿用电力电缆MVVM。
2.2 电缆型式由系列代号、绝缘、护套材料代号、外护层和性能特征代号5个部分组成。
安防工程、监控工程、弱电系统工程、综合布线、银行监控工程、网络工程、消防工程、远程三表抄送、楼宇防盗监控、门禁可视对讲等专用音视频信号电线电缆。
Specializing in the production for the telecommunications, computing facilities, instruments and meters connect with wire and cable series product -- -- -- -- -- - RVVP get coal RVV series of products: coal mine product safety sign - Ann symbol - Ann logo certification coal - coal Ann query - AnBiao query on a coal production license MA for authentication with mining products safety sign AnBiao syndrome, MA certificate, coal, flame retardant communication cable MHYV MHJYV MHYBV MHYA32 MHYYV MHYY32 flame retardant signal cable: MHYVR MHYBV MHYV32 MHYVR MHYVP MHYBV MHYVR32 coal mine fire retardant control cable: HYA22 ZRC manufacuring HYA ZRC - HYAT ZRC - HYAT23 manufacuring HYA HYA23 HYA53 HYAT HYAT23 HYAT53 HYAC HJVV HPVV HPVV22 PYV HYV AZVP HYV22 PYV22 control cable: KVV KVVP kvvv22 kvp2 kvp2 kvp2-22 KVVR KVRP system dedicated cable HAVP KAVP HAV Your satisfaction - our unremitting pursuit!
ZR-BPYJVP3交联聚乙烯绝缘聚氯乙烯护套铝聚酯复合膜绕包屏蔽变频电力电缆。
四：基本型号及名称ZR-BPGGP硅橡胶绝缘和护套铜丝编织屏蔽耐高温变频电力电缆。
ZR-BPGGP2硅橡胶绝缘和护套铜带绕包屏蔽耐高温变频电力电缆。
3、线对：由a、b两根不同颜色的绝缘线芯绞合成线对。
4、缆芯结构：绞合线对组成12、13子单位，25对基本单位，50对、100对和200对超单位。
单位外疏绕标志色带。
缆芯通常由一个或多个单位组成。
5、填充物（仅用于填充型电缆）；缆芯间隙填充阻水化合物。
在油罐区、重要木结构公共建筑、高温场所等其他耐火要求高且敷设安装和经济性能接受的情况，可采用不燃性矿物绝缘电缆。
自容式充油电缆明敷在公用廊道、客运隧洞、桥梁等要求实施防火处理的情况，可采取埋砂敷设。
靠近高压电流、电压互感器等含油设备的电缆沟，宜使该区段沟盖板密封。
为了评估步进电机的特性，必须要有必要的测量方法，从本节开始讲解下步进电机的静态转矩特性及步进角精度。
静态转矩特性静态转矩特性为步进电机的转子静止状态（平衡状态）的特性，该特性与时间无关，静态转矩特性也称为角度-静态特性或刚度特性，是步进电机定子直流激磁状态下，负载转矩与转子位移角度的变化关系。
此转矩如右图所示，以正弦规律变化，最大转矩为，产生的静态转矩T与位移角θ的关系如下：其中，图中的θ、θL、θM为机械角度。
ia-K2YV(EX)本安型PE绝缘、PVC护套二芯绞合屏蔽仪用电缆固定敷设在室内、电缆沟或管道中ia-K2YV(EX)R本安型PE绝缘PVC护套二芯绞合屏蔽仪用软电缆适用于要求柔软的场合ia-K3YV本安型PE绝缘PVC护套三芯绞合屏蔽控制电缆适用于要求柔软的场合ia-K3YVY本安。
Telephone line -HPV HYV HPVV HVV HVV HVV 4*0.5 4*0.4 4*0.6 4*0.7 4*0.8 4*0.9 4*1.0 4*1.2 4*1.5 HPV HYV HPVV HVV HVV 4*0.5 4*0.4 4*0.4 *0.6 4*0.7 4*0.8 4*0.9 4*1.0 4*1.2 4*1.5 and other series of municipal communication cables: YD/T322-1996 manufacuring hya HYAT duct (widely used in metropolitan area network, in the construction of communication network is given priority to with overhead and pipe installation, main transmission audio signal) HYAT filling type communication cable (used in metropolitan area network, in the construction of communication network is given priority to with pipe installation, have water-blocking effect, without charging protection, main transmission audio signal) HYAC messenger communication cable (used in metropolitan area network communication network construction, aerial installation, construction is convenient, Main transmission audio signal) HYAT53 filling type armoured cable (used in metropolitan area network communication network construction in complex environment, directly buried underground, water resistance, the rat bite, without charging protection, main transmission audio signal) the first branch factory of tianjin cable factory specializing in the production of research and development; Mining signal cables; Communications cables for coal mines; Coal mine control cables; Coal mine signal cables; Mining monitoring cables; Monitoring cables for mining; Telemetry cable for mine; Mine monitoring lines; Mine monitoring line; Mining telephone cables; Mine explosion-proof cable; Mining cables; Mine fire retardant cable; Sensor cable; All the products have the certificate of "coal safety sign" and have complete specifications. The products are widely used in various coal mine systems and coal mine monitoring systems. Sales to coal companies and mining groups throughout the country; And become a number of mining equipment companies supporting products, established long-term cooperation relations, products have been users praise and trust!
1kV-35kV阻燃交联聚乙烯绝缘电力电缆产品标准：本产品按GB1270《额定电压35kV及以下铜芯、铝芯塑料绝缘电力电缆》标准生产，还可根据用户需要按国际电工委员会推荐标准IEC、英国标准、德国标准及美国标准生产。
CPEV-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数字巡回检测装置用屏蔽电缆KJCPKJCPR地面通信电缆（地面通信线缆）HYA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|。