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
HJVV, HJVVP, HPVV communication cable: mainly used for transmitting audio, 150kHZ and below analog signals 2048kbit/s and below digital signals. Under certain conditions, it can also be used to transmit digital signals over 2048kbit/s. Used for short distance signal transmission. WeChat sales department is newly added in our factory. WeChat ID: 15075619608 QQ is not convenient for WeChat contact! HJVV, HJVVP, HPVV communication cable is introduced: used for distribution frame or switch to switch internal connection between the machine at all levels (including rural telephone bureau), such as the beginning of the line and terminal for connection to local telephone cable to the junction box or distribution frame, inner conductor wire diameter (mm) : 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, logarithmic (on) : 5-1000 HPVV low-frequency communication wiring cable wiring cable HPVV ZR - HPVV broadband/product use: It is applicable to the transmission system from the remote optical network unit to the user and the subsystem of the transmission between buildings in the building wiring system. The highest transmission frequencies are 30MHz and 100MHz respectively.
电缆的推荐允许弯曲半径如下：无铠装电缆，应不低于电缆外径的6倍；铠装或铜带屏蔽电缆，应不低于电缆外径的12倍；屏蔽软电缆，不低于电缆外径的6倍。
控制电缆泛指设备仪表供电和信号控制。
代表型号：KVV和KYJV，还有其它控制线等等。
产品技术参数：电缆型号内导体结构mm绝缘外径mm编织屏蔽层数电缆外径mm特性阻抗Ω衰减常数(20℃)频率(MHz)衰减≤dB/mSYV7×0.173.00±0.1315.0±0.2575±32000.280SYV7×0.213.70±0.1316.0±。
Power cable, armored cable, buried cable, product introduction: power cable in transmission and distribution system, this company produces the ac rated voltage 0.6/1 kv PVC insulated power cable and crosslinked xlpe power cables, 35 kv and below its performance not only conforms to the standard GB1276 and "and IEC60840, and has formed series, namely, flame retardant, fire-resistant type, cold type and waterproof of power cable.
四脚管、五脚管管脚排列，这些管子的管脚中有两只较粗，为灯丝，把管脚超限自己，左边的粗脚为第一脚，按顺时针方向依次为第二脚.....电子管的命名方法分阴极射线管、收信放大管、发射管、光电管等命名方法不一。
下面仅以常见的收信放大管说明由四部分组成：1234,1表示灯丝电压（v）的数字，如有小数则取其整数部分。
表示管子的类型，D-二极管（检波），Z-二极管（小功率整流），H-双二极管，6-双二极管、三极管，B-双二极管-五极管，C-三极管，N-双三极管，F-三极-五极管，S-四极管，J-锐截止五极管和锐截止束射四极管，K-遥截止五极管，T-双四极管或双五极管，P-输出五极管及输出束射四极管，A-变频管，U-三极-六极管-七极管-八极管，E-调谐指示管；3.表示同类产品序号的数字；4.表示结构形式的字母，p-玻璃管，k-陶瓷管，j-橡实管-小型管-无代号，超小型管-直径大于11mm-g，直径11-8mmb，直径4mm-8mma，直径＜4mmr，锁式管s，盘封管d如5Z4P：双二极管整流管6N9P：间热式双三极管二极电子管二极电子管结构：阳极、阴极、灯丝、真空管组成，也叫真空二极电子管，是最先被发明的。
阻燃控制电缆型号ZR-KVVP22,ZR-KVVP2-22,ZR-KVVP2我公司长年供应：KVV、KVVR、RVV、ZR-KVV、ZRC-KVV、ZRB-KVV、ZRB-RVV、ZRC-RVV、KVVP、KVVP1、ZR-KVV22P、ZR-KVV22P2、ZRC-KVV22P2、ZRC-KVV2。
煤矿用聚氯乙稀绝缘和护套阻燃控制电缆天津市电缆厂MKVVMKVV22MKVV32MKVVRMKVVRPMKVV（2-61芯）MKVV芯） MKVVR （2-61芯）MKVV芯） MKVVP （2-61芯）。
电缆导体长期工作温度应不超过+70℃。
电缆敷设环境温度：聚氯乙烯外护套电缆应不低于0℃;聚乙烯外护套电缆应不低于-20℃。
电缆的允许弯曲半径：非铠装电缆应不小于电缆外径的10倍；铠装电缆应不小于电缆外径的15倍。
HJVV, HJVVP, HPVV communication cable: mainly used for transmitting audio, 150kHZ and below analog signals 2048kbit/s and below digital signals. Under certain conditions, it can also be used to transmit digital signals over 2048kbit/s. Used for short distance signal transmission. WeChat sales department is newly added in our factory. WeChat ID: 15075619608 QQ is not convenient for WeChat contact! HJVV, HJVVP, HPVV communication cable is introduced: used for distribution frame or switch to switch internal connection between the machine at all levels (including rural telephone bureau), such as the beginning of the line and terminal for connection to local telephone cable to the junction box or distribution frame, inner conductor wire diameter (mm) : 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, logarithmic (on) : 5-1000 HPVV low-frequency communication wiring cable wiring cable HPVV ZR - HPVV broadband/product use: It is applicable to the transmission system from the remote optical network unit to the user and the subsystem of the transmission between buildings in the building wiring system. The highest transmission frequencies are 30MHz and 100MHz respectively.
ZR-KVVP2铜芯绝缘和护套铜带屏蔽（阻燃）控制电缆。
ZR-KVVRP2-22铜芯绝缘和护套铜带屏蔽钢带铠装（阻燃）控制电缆。
电缆使用环境温度-40℃~+50℃，电缆敷设温度≥-10℃，在25℃时的温度≤95%，电缆敷设时弯曲半径：MHYV31、MHYVR型电缆≥10倍电缆外径其余型号电缆≥15倍电缆外径。
U0--任一绝缘导体和\\\\"地\\\\"（电缆的金属护层或周围介质）之间的电压有效值。
U--多芯电缆或单芯电缆系统任何两相导体之间的电压有效值，当用于交流系统时，电缆的额定电压应至少等于所使用电缆系统的标称电压。
假设测量时出线端AB之间电阻最大，那么出线端AB之间就是主副绕组串联，那么剩余第三条出线端线C就是主、副绕组的连接点。
区分主副绕组。
分别测量最大值两条出接端与第三条出现端的阻值（这两个阻值之和必须等于上述的最大值）。
其中阻值较小的是主绕组，阻值较大的是副绕组。
如所示比如通过第一步测量知道AB两个出线端阻值最大，那么就测量AC和BC之间的阻值，阻值小是主绕组，阻值稍大的是副绕组。
设副绕组电阻为R1，主绕组电阻为R2，则R1大于R2，R1+R2=AB之间电阻。
四、型号、名称、工作条件型号名称型号名称SYV－50－3实芯聚乙烯绝缘同轴射频电缆SYV－75－3实芯聚乙烯绝缘同轴射频电缆SYV－50－5－1实芯聚乙烯绝缘同轴射频电缆SYV－75－5－1实芯聚乙烯绝缘同轴射频电缆SYV－50－5－2实芯聚乙烯绝缘同轴射频电缆SYV－75－。
目前，常用的有两类：50Ω和75Ω的射频同轴电缆。
特性阻抗75Ω射频同轴电缆常用于，故称为CATV电缆，传输带宽可达1GHz，目前常用CATV电缆的传输带宽为750MHz。
（2）对称射频电缆对称射频电缆回路其电磁场是开放型的，由于在高频下有辐射电磁能，使衰减增大，并导致屏蔽性能差，再加上大气条件的影响，通常较少采用。
ZR-HYA53：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装阻燃聚乙烯护套市内通信电缆ZR-HYAT53：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢塑带铠装阻燃聚乙烯护套市内通信电缆ZR-HYA22：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢带铠装阻燃聚氯乙烯护套市内通信电缆ZR-HYA23：铜芯实心聚。
烟密度、卤素含量和毒性等级阻燃电缆区分阻燃电缆和耐火电缆的区别：一般人很容易混淆阻燃电缆和耐火电缆的概念，阻燃电缆有许多较适用于化工企业的优点，如低卤、低烟阻燃等，但在一般情况下，耐火电缆可以取代阻燃电缆，而阻燃电缆不能取代耐火电缆。