A类阻燃性能优于C类阻燃性能。
使用特点额定电压U0/U为450/750V。
电缆导体的长期允许工作温度为70℃。
电缆的敷设温度不低于0℃。
推荐的允许弯曲半径无铠装层的电缆，应不小于电缆外径的6倍。
有铠装、铜带屏蔽结构的电缆，应不小于电缆外径的12倍。
vv电缆，kvv电缆，yc电缆，my电缆。
煤矿用电缆煤矿用阻燃电缆（简称为矿用电缆）执行中华人民共和国煤炭行业标准MT本标准是国家煤炭工业局发布的。
高压橡套软电缆用途：交流额定电压6kv及以下移动配电装置及矿山采掘机械；起重运输机械等。
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。
Precautions for installation of power cables: keep 2m distance when the cable is installed in parallel with the thermal pipe, and 0.5m should be maintained when crossing. The cable shall be installed at a distance of 0.5m in parallel or across other pipelines. When the cable is directly buried and installed, the buried depth of 1-35kv cable is not less than 0.7m. When 10KV and below cables are installed in parallel, the net distance between them shall not be less than 0.1m and 10-35kv shall not be less than 0.25m. The distance of cross installation is not less than 0.5m. Cable laying temperature is not lower than 0 ℃, bending radius: multi-core cable or 15 (D + D), a single cable 20 or more (D + D), (D for cable diameter, D) for the conductor diameter. 6 kv and above cable joint: (1) installing a cable terminal head, must be stripped semiconductor electric shielding layer, operation shall not damage the insulation, should avoid mark uneven situation, when necessary use sand paper to grind; The shield end should be flat and the graphite layer (carbon particles) should be cleaned. (2) plastic cable end copper tape screened and armor must be good grounding, the short circuit also follow this principle, avoid unbalanced three-phase run ShiGang armoured end produce inductive electromotive force, and even "lighter" and accidents such as burning sheath. It is required to use my tinplate to braid copper wire for grounding lead. When connecting with the cable copper belt, it should be welded with chromium-iron tin. The shield of three-phase copper tape should be connected with ground wire respectively. Note that the shielded ground wire and steel armor ground wire should be separately drawn out and insulated from each other. The position of the welded ground wire should be as low as possible. Basic re for cable terminals and intermediate joints: a. good conductor connection; B. The insulation is reliable, and it is recommended to use irradiated cross-linked heat-shrinkable silicone rubber insulation materials; C. good sealing; D. sufficient mechanical strength to meet various operating conditions. The end of the cable must be used to prevent erosion of water and other corrosive materials, so as to prevent breakdown due to the aging of the insulation layer caused by water trees. Crane or forklift should be used for the loading and unloading of cables. It is forbidden to run flat or lay flat. For installation of large cables, cable laying cart should be used to avoid external damage or abrasion caused by manual dragging. If the cable cannot be laid in time for some reason, it should be stored in a dry place to prevent sunlight from exploding and water entering the end of the cable. Note: the installation of wire and cable should be done by the installation personnel or full-time technical personnel familiar with the performance of wire and cable. If there are still unclear matters, please consult the relevant technical department or the technical department of our factory.
Manufacturing technology of frequency converter cable: in the production process of special cable for frequency converter motor, the core extrusion process and cable forming process are the most critical processes. The of the insulation core in the extrusion process of the insulation core will directly affect the electrical energy of the cable.
plc使用与继电器电路图极为相似的梯形图语言，如果用PLC改造继电器控制系统，根据继电器电路图来设计梯形图是一条捷径。
这是因为原有的继电器控制系统经过长时间的使用和考验，已经被证明能完成系统要求的控制功能，而继电器电路图又与梯形图有很多相似之处，可以将继电器电路图“翻译”成梯形图，即用PLC的外部硬件接线图和梯形图有很多想似之处，继电器系统的功能。
这种设计方法一般不需要改动控制面板，保持了系统原有的外部特性，操作人员不用改变长期形成的操作习惯。
KVV铜芯聚氯乙烯绝缘聚氯乙烯护套控制电缆。
KVVP2铜芯聚氯乙烯绝缘聚氯乙烯护套铜带屏蔽控制电缆。
KVV22铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装控制电缆。
KVVR铜芯聚氯乙烯绝缘聚氯乙烯护套控制软电缆。
YJV32YJLV32YJV33YJLV33YJV42YJLV42YJV43YJLV43交联聚乙烯绝缘聚氯乙烯/聚乙烯护套钢丝铠装电力电缆敷设在高落差地区，电缆能承受机械外力作用及相当的拉力。
2、可根据用户要求，生产0.6/1KV圆形导体结构或扇形导体结构的各类五芯电缆。
矿物绝缘电缆是耐火电缆中性能较优的一种，它是由铜芯、铜护套、氧化镁绝缘材料加工而成的，简称MI（minerlinsulatedcables）电缆。
该电缆完全由无机物构成耐火层，而普通耐火电缆的耐火层是由无机物与一般有机物复合而成，MI电缆的耐火性能较普通耐火电缆更优且不会因燃烧而分解产生腐蚀性气体。
绝缘：根据不同型号可采用阻燃聚乙烯、聚氯乙烯、聚乙烯三种中的一种.绝缘表面应光滑平整,厚度应均匀,最小厚度为0.4毫米.线对：可分为以下4种护套：聚氯乙烯护套材料的性能要求应符合GB8815的规定,平行室内线护套的横截面挤成扁圆形,绞合室内线的护套横截面挤成圆形.护套应完整连续,无缺陷表面光滑平整,。
有普通型、耐寒型等。
2、敷设时环境温度≥0℃。
3、最小弯曲半径：4、无铠装层电缆，应不小于电缆外径的6倍。
5、有铠装或铜带屏遮结构电缆，应不小于电缆外径的12倍。
6、有屏遮结构的软电缆，应不小于电缆外径的6倍。
9、外护（适用于铠装电缆23、22、53型）：在铠装层上挤塑一层聚乙烯或聚氯乙烯。
10、可根据用户要求提供防防鼠、白蚁及阻燃等功能电缆。
市内通信电缆用途：主要用于传输音频、150kHZ及以下的模拟信号和2048kbit/s及以下的数字信号。
使能断开，计数器停止计数，计数器位仍为1，使能位再为1时，计数器在原来的计数基础上计数。
以上三种计数器可以通过复位指令复位。
正交计数器A相超前B相90度，增计数B相超前A相90度，减计数当要改变计数方向时（增计数或减计数），只要A相和B相的接线交换一下就可以了。
译码指令和编码指令：译码指令和编码指令执行结果DECO是将VW2000的第十位置零（为十进制的1024），ENCO输入IN最低位为1的是第3位，把3写入VB10（二进制11）。
Railway cables are suitable for transmission under rated voltage ac 500V or dc 1000V and below. Product name, model, specification and scope: plastic insulation and polyurethane sheath railway cable PTYAH; PTYA; PZYA; PTYV; PTYY,; PTY22; PTY23; (PZY02; PZY03; PZY23 PZY22) 1/0.8mm (1/1.0mm) 2-48 core is suitable for railway communication, fire alarm, telegraph and other automatic devices with rated voltage ac 500V or dc 1000V or below. Poly (PVC insulation composite sheath steel tape armoured polyvinyl chloride sheathed PTYA23 PTYA22 PTY23 PTY22 PTYAH23 PZYA23 PZYA22 PZY23 PZY22 0.8 mm (1/1.0 mm) 4-61 core is fit for ac rated voltage 500 v or dc voltage 1000 v and below transfer audio and fixed laying railway and group control automation assembly line, can transport railway group general automatic letter, also can transmit the audio frequency shift automatic block and business calls. ? 4, using features: cable in - use under 40 ℃ to + 50 ℃. Cable conductor long-term working temperature shall not exceed 70 ℃. Ordinary sheath of the cable laying under the temperature below 5 ℃, resistance to sheath for - 10 ℃. The bending radius shall not be less than 15 times of the outer diameter of the cable (when laying) and shall be applicable to any horizontal difference
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。
矿物绝缘电缆是耐火电缆中性能较优的一种，它是由铜芯、铜护套、氧化镁绝缘材料加工而成的，简称MI（minerlinsulatedcables）电缆。
该电缆完全由无机物构成耐火层，而普通耐火电缆的耐火层是由无机物与一般有机物复合而成，MI电缆的耐火性能较普通耐火电缆更优且不会因燃烧而分解产生腐蚀性气体。
缆芯包带：缆芯用聚脂薄膜带绕包。
屏蔽：用0．2mm厚的双面涂塑铝带轧纹(或不轧纹)纵包于缆芯包带外，搭接处粘合。
护套：黑色低密度聚乙烯。
可提供双护套电缆。
识别和长度标记：电缆外表有**性识别标记，标记间隔不大于1m，标记内容有：导线直径、线对数量、电缆型号、制造厂厂名代号及制造年份，长度标记以间隔不大于1m标记在外表面上。