ZR-BP阻燃变频线沁阳资质高效WDZ-RYY4X10平方低烟无卤电力电缆漂亮
三、名称及型号煤矿用阻燃射频同轴电缆MSYV50-3煤矿用阻燃射频同轴电缆MSYV50-5煤矿用阻燃射频同轴电缆MSYV50-7煤矿用阻燃射频同轴电缆MSYV50-9煤矿用阻燃射频同轴电缆MSYV50-12煤矿用阻燃射频同轴电缆MSYV75-3煤矿用阻燃射频同轴电缆MSYV75-4煤矿用阻燃射频同轴。
DJVPVRDJYPVRDJYJPVR编织分对屏蔽（铜丝或镀锡丝）软结构。 DJVP2VRDJYP2VRDJYJP2VR铜塑复合膜分对屏蔽软结构。 DJVP3VRDJYP3VRDJYJP3VR铝塑复合膜分对屏蔽软结构。
This product use features: 1.1 the use of the cable temperature - 40 ℃ ~ + 60 ℃. 1.2 cable conductor long-term working temperature shall not exceed + 70 ℃. 1.3 cable laying temperature: polyvinyl chloride 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 shielding coefficient of comprehensive sheathed railway cable is less than 0.8; The shielding coefficient of aluminum sheath railway cable is less than 0.3
聚乙烯的绝缘电阻高，耐电压好，介电系数小和介质损耗温度和变频率的影响也小，不但能满足传输性能的要求，而且能确保电缆的使用寿命。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。
KVV32聚氯乙烯绝缘，细钢丝铠装聚氯乙烯护套控制电缆敷设在室内、电缆沟中、管道、竖井内及地下，能承受一定的拉力作用。PYYPTYY聚乙烯绝缘乙烯护套铁路信号电缆。PYAPTYA聚乙烯绝缘挡潮综合护套（铁路）信号电缆。
保护接零：把电工设备的金属外壳和电网的零线可靠连接，以保护人身安全的一种用电安全措施。把电工设备的金属外壳和电网的零线连接，以保护人身安全的一种用电安全措施。在电压低于1000伏的接零电网中，若电工设备因绝缘损坏或意外情况而使金属外壳带电时，形成相线对中性线的单相短路，则线路上的保护装置（自动开关或熔断器）迅速动作，切断电源，从而使设备的金属部分不至于长时间存在危险的电压，这就保证了人身安全。多相制交流电力系统中，把星形连接的绕组的中性点直接接地，使其与大地等电位，即为零电位。
敷设时电缆的温度应不低于0℃，敷设时弯曲半径应不小于电缆外径的10倍。有铠装层或铜带屏蔽结构的电缆，应不小于电缆外径的12倍。ZR-KVVRP阻燃聚氯乙烯绝缘，阻燃聚氯乙烯护套铜丝编织屏蔽软控制电缆同上具有防干扰能力。
HYA53 / HYAT53 rat bite/buried HYAT53 directly buried cables: mainly used for the transmission of audio, 15 duct | communication cable | (pipe/overhead) HYAC (overhead) HYAT (waterproof) 0 KHZ and analog signals and 2048 kbit/s and under the following digital signal. Under certain conditions, it can also be used to transmit digital signals over 2048kbit/s. Suitable for overhead or pipeline laying in city, suburb and local area, or directly buried.
本厂专业生产：RVVP屏蔽线、RVV护套线、SYV、SYWV视频线、AVVR信号线、安防线缆、监控线缆、音频线、音响线、网络线、各种信号线、各种塑铜线、控制屏蔽电缆、控制电缆、各种阻燃系列线缆、电力电缆、通信电缆、橡套电缆。
敷设时环境温度不低于:固定敷设-30℃,非固定敷设-18℃最小弯曲半径：无铠装层应不小于电缆外径的8倍，带铠装层的电缆应不小于电缆外径的14倍在20℃时用直流500V电压试验稳定充电1min后绝缘电阻应不小于2500MΩ•Km各对绞屏蔽之间以及对绞屏蔽与总屏蔽之间应不断路电缆的线芯和线芯之间以及屏蔽。
3、绝缘电阻见下表：性能聚氯乙烯绝缘交联聚乙烯绝缘体积电阻率ρΩ.㎝20℃时电缆工作温度时-1012绝缘电阻常数KiMΩ.㎞20℃时电缆工作温度时36.70.03673.67■型号名称型号名称铜芯铝芯VV-PYJV-PVLV-PYJLV-P聚氯乙烯(交联聚乙烯)。
1. Mine control cable execution: mt818-1999? 2. Mine flame retardant control cables: this product is applicable to ac rated voltage u0/u of 450/750v. And the following control and control circuits and the protection lines and the connection lines of the electrical instruments in the distribution e ? 3. Model specifications and scope of mine control cables:? Model of control cable for mine? Specification range? Using MKVV MKVVP, MKVVP2? 0.5 - was 10, 2-61 core? Suitable for weak current control or strong electromagnetic field area mkvvvv22, mkvvvvv20? 0.5 - was 10, 4-61 core? MKVV32, MKVV30? 0.5 - was 10, 7-61 core? MKVVR? 0.5-6 was, 2-61 core? MKVVRP? Was 0.5-4, 2-61 core? MKVVP22 MKVVP2-22? 1.5 - was 10, 4-61 core? MKVVP2-22-1? 1.5 - was 10, 4-61 core? Mainly used in 500KV substation and power plant distribution device and high electromagnetic field area mkvv-1, mkvvvvv22-1? 0.5 - was 10, 2-61 core? 4, using features: coal mine with control cable conductor long-term allowed working temperature is 70 ℃, the cable temperature under installation should not below 0 ℃. Permissible bending radius of control cables used in coal mines: for cables with armored or copper band shielding structures, the bending radius should not be less than 12 times of the outer diameter of the cables. For soft cable with shield layer structure, it should be no less than 6 times the outer diameter of the cable. The cable without armor layer should not be less than 6 times the outer diameter of the cable. ?
二极管是电子电路中很常用的元器件，非常常见，二极管具有正向导通，反向截止的特性。在二极管的正向端(正极)加正电压，负向端(负极)加负电压，二极管导通，有电流流过二极管。在二极管的正向端(正极)加负电压，负向端(负极)加正电压，二极管截止，没有电流流过二极管。这就是所说的二极管的单向导通特性。下面解释为什么二极管会单向导通。二极管为什么只能单向导电？二极管是由PN结组成的，即P型半导体和N型半导体，因此PN结的特性导致了二极管的单向导电特性。
(2)短路时，(最长持续时间不超过5s)电缆导体的最高温度不超过160℃。双绞屏蔽线RVSP2、产品介绍：RVSP系列在RVS的基础上再加上一层铜丝屏蔽网，常被用于那些对传输的信号要求很高的场合。常被用于那些对传输的信号要求很高的场合。
Electrical strength of insulation: 1min 1kv between conductors does not break the conductor and the shield 1min 3kv does not break
A-DJVPV IA-DJYPV IA-DJYJPV 本安型、编织分对屏蔽（铜丝或镀锡丝）。 IA-DJVP2V IA-DJYP2V IA-DJYJP2V 本安型、铜塑复合膜分对屏蔽。 IA-DJVP3V IA-DJYP3V IA-DJYJP3V 本安型、铝塑复合膜分对屏蔽 。
电缆端头必须使用防止水及其它腐蚀性材料的侵蚀，以防因水树引起绝缘层老化而导致击穿。电缆的装卸必须使用吊车或叉车，禁止平运，平放，大型电缆安装时须使用放缆车，以免电缆受外力损伤或因人工拖动而擦伤。电缆如因故不能及时敷设时，应将其放在干燥地方贮存，防止日光爆晒，电缆端头进水等。