成缆工序变频电缆要求结构对称，成缆时必须保证绝缘线芯张力均匀，使成缆后的线芯长度尽量保持一致，否则会引起结构变化，导致电容和电感的不均匀性，影响电缆的电气性能。而且**在具有退扭的成缆设备上完成。变频电缆是工业中实现节能不可或缺的重要设备，技术要求高，工艺复杂，请用户慎重选购。
ZRBPYJVPX12R-TK铜芯交联聚乙烯绝缘阻燃聚氯乙烯护套铜带绕包镀锡铜丝编织双重屏蔽变频器用回路电缆。2、交联聚乙烯绝缘、耐温耐候性好。3、低传输阻抗，电磁兼容性好。4、低工作电容5、良好的抗干扰和低辐射性能。
二、电缆的型号、名称和用途序号型号名称使用范围1VVVLVVYVLY聚氯乙烯绝缘聚氯乙烯/聚乙烯护套电力电缆敷设在室内、隧道及管道中，电缆不能承受机械外力作用VV22VLV22VV23VLV23聚氯乙烯绝缘聚氯乙烯/聚乙烯护套钢带铠装电力电缆敷设在室内、隧道内直埋土壤，电缆能承受机。
DJYPV(R)-22钢带铠装聚乙烯绝缘铜丝编织分屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJYPV(R)P-22钢带铠装聚乙烯绝缘铜丝编织分屏总屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJYV(R)P2-22钢带铠装聚乙烯绝缘铜带绕包总屏聚氯乙烯护套计算机用屏蔽(软)电缆。
The directly buried installation (℃) in the air for laying
：一台最多可以提供48个千兆端口的交换机，其满配置容量应达到48×1G×2=96Gbps，才能够确保在所有端口均在全双工时，提供无阻塞的线速包交换。包转发率满配置包转发率(Mbps)=满配置GE端口数×1.488Mpps+满配置百兆端口数×0.1488Mpps，其中1个千兆端口在包长为64字节时的理论吞吐量为1.488Mpps。：如果一台交换机最多能够提供24个千兆端口，而宣称的包转发率不到35.71Mpps(24x1.488Mpps=35.71)，那么就有理由认为该交换机采用的是有阻塞的结构设计。
规格：截面0.50.751.01.52.54615mm2及以下2.5mm2以上A类1/0.801/1.131/1.131/1.381/1.781/2.251/2.76聚氯乙烯护氟塑料护套聚氯乙烯护氟塑料护套B类19/0.119/0.219/0.219/。
4、最小弯曲半径：非铠装电缆：阻燃型为电缆外径的6倍，铠装型电缆：为电缆外径的20倍矿用通信电缆型号:MHYVMHYAVMHYA32MHJYV瓦丝监控探头线MHYV(1×22×21×45×2)×7/0.28矿用通信电缆用于平巷斜巷及机电硐室MHJYV4/0.28铜线+3/0.28钢线1×22×2矿用。
Plastic insulated control cable: GB9330-88 scope of application: this product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit using features: 1, the conductor long-term allowed working temperature is 70 ℃. 2, when laying environment temperature 0 ℃ or higher. 3. Minimum bending radius: 4. For unarmored cable, it shall be no less than 6 times the outer diameter of the cable. 5. The cable with armor or copper shield shall not be less than 12 times the outer diameter of the cable. 6. The soft cable with screen shielding structure shall not be less than 6 times the outer diameter of the cable.
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.
射频电缆按绝缘型式分类（1）实体绝缘电缆在这种电缆的内外导体之间全部填满实体高频电介质，大多数软同轴射频电缆都是采用这种绝缘型式。（2）空气绝缘电缆电缆的绝缘层中，除了支撑内外导体的一部分固体介质外，其余大部分体积均是空气。
DJYP3V polyethylene insulation on twisted aluminum plastic composite tape sub - shielding PVC
在t2-t3时间内，A相电位最高，而C相电位最低，故VDVD6处于正向导通。同理，交流发动机的输出电压可视为C绕组之间的线电压。以此类推，周而复始，在负载上便可获得一个比较平稳的直流脉动电压。2）九管交流发电机的整流原理九管交流发电机的特点是除了常用的6个整流二极管外，又增加了3个功率较小的二极管。3个功率较小的二极管用来供给交流发电机磁场电流，故又称之为磁场二极管。采用磁场二极管后，输出端连接充电指示灯，即可指示发电机工作情况的好坏。
理论上RS485通信电缆的传输距离能达到1200米，但实际应用中传输距离要小于1200米，具体长度受周围的环境影响。RS485总线一般最大支持32个节点，如果使用特制的485芯片，可以达到128个或者256个节点，最大的可以支持到400个节点。
NHB—KVV适用范围：固定敷设于室内、隧道内、托架及管道中要求阻燃耐火的场所。电缆导体长期工作温度不超过+70℃，电缆敷设温度不低于0℃，电缆弯曲半径不小于电缆外径的10倍。NHA—KVV适用范围：同NHB—KVV，用于要求耐火较为苛刻的场所。
1, code DJ - (series code) electronic computer shielded cable Y - (insulation code) high-pressure polyethylene F - (insulation code) fluoroplastic V - (sheath code) polyvinyl chloride (R - said many strands of soft wire core P - (block code) copper mesh shielding P1 tin plated copper mesh shielding P2 copper tape screened P3 aluminum-plastic composite membrane shielding for example 1:2, product specifications order 7 (14) to 1.0 was computer shielded cable can be represented as: (1) total shielding DJYVP7 * 2 * 1.0mm2 (2) partial shielding multiple soft lines DJYPVR7 * 2 * 1.0mm2 (3) total shielding DJYPVP7 * 2 * 2 * 1
本公司生产的耐火型动力电缆为额定电压0.6/1KV铜芯电缆，还可以生产低烟无卤耐火动力电缆、高阻燃隔氧层耐火动力电缆，其耐火性能符合GB/T12666.6《电线电缆耐火特性试验方法》。因此，耐火系列动力电缆的整体性能优良可靠。