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 quality of the insulation core in the extrusion process of the insulation core will directly affect the electrical energy of the cable.
矿用电缆选择矿井供电系统中，高压供电线路一般都采用铠装电缆，其故障率相对低压供电所采用的[1]要少得多。
采区供电是供电系统中的薄弱环节，工作环境又较差，如何选择电缆的型号与截面，关系到供电运行的安全。
3：氟塑料高温补偿导线补偿电缆KX-GA-VVP聚氯乙烯绝缘和护套铜丝编织总屏蔽精密级K分度号热电偶用补偿电缆KX-GA-VVRP聚氯乙烯绝缘和护套铜丝编织总屏蔽精密级K分度号热电偶用补偿软电缆KX-GA-VPVP聚氯乙烯绝缘和护套铜丝编织分屏加总屏蔽精密级K分度号热电偶用补偿电缆KX-GA-。
具有以下几点特点：1、产品能有效预防白蚁、鼠类对电缆的危害，性能可靠长久，无需其他辅助方法；2、电缆产品内无对空气、土壤、人身造成污染和危害的材料，属绿色环保型产品；3、五芯电力电缆适用于三相五线制输配电系统，由于中性线与地线分开使得系统运行更加稳定，操作人员更为安全。
执行标准：GB9330－1988和Q/SCT－J02.04－1999使用特性：电缆导体的最高额定温度为：聚氯乙烯绝缘电缆为70℃，交联聚乙烯绝缘电缆为90℃。
电缆敷设时的环境温度不低于0℃。
电缆敷设时的最弯曲半径为：无铠装层的电缆，应不小于电缆外径的6倍，有铠装层或铜带屏蔽的电缆应不小于电缆外径的12倍。
3X_bit：该设备类型支持的功能码与3x设备类型完全一致，不同之处是，3x是读数据，而3x_bit是读数据中的某一个bit的状态。
4X_bit：该设备类型支持的功能码与4x设备类型完全一致，不同之处是，4x是读数据，而4x_bit是读数据中的某一个bit的状态。
6x_bit：该设备类型发出的功能码与6x设备类型完全一致，不同之处是，6x是读数据，而6x_bit是读数据中的某一个位的状态。
威纶触摸屏的地址格式为：“N#X"其中N代表站号，#分隔符，X为MODBUS地址。
100对及以上线对的电缆加有1％的预备线对，但最多不超过6对。
缆芯内的间隙用石油膏填充。
缆芯包带：用聚脂薄膜带绕包。
屏蔽：用轧纹(或不轧纹)金属带，金属带纵包于缆芯包带之外。
护套：黑色低密度聚乙烯。
也可提供双层护套的电缆。
矿用电话电缆MHYAV（20 30 50 ）X2X0.8型号：MHYAV、MHYA32、MHYV、MHYVR、MHYVRP、MHYVP、MHY、MHJY6、产品说明：型号名称MHYV煤矿用聚乙烯绝缘聚氯乙烯护套通信电缆MHYVR煤矿用聚乙烯绝缘聚氯乙烯护套通信软电缆MHYVP煤矿用聚乙烯绝缘编织屏蔽。
产品型号、规格：型号标称截面(mm）芯数额定电压(V)执行标准：ZR-BV0.5-1851450/750及以下Q/X*ZR-BVR2.5-701450/750及以下ZR-RV0.5-951450/750及以下ZR-VV1.5-1851-5600/1000ZR-。
AVVR型300/300V铜芯聚氯乙烯绝缘聚氯乙烯护套安装用软电缆。
KVVP2聚氯乙烯绝缘，聚氯乙烯护套铜带绕包屏蔽控制电缆同上。
KVV22聚氯乙烯绝缘，聚氯乙烯护套内钢带铠装控制电线敷设在室内、电缆沟中、管道内及地下，能承受较大的机械外力使用。
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 direct buried depth of 1-35kv cable is 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 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. ? 6KV and above cable connector:? When installing the terminal head of the cable, the semiconductor electrical shielding layer must be stripped off. During operation, the insulation shall not be damaged. The shield end should be flat and the graphite layer (carbon particles) should be clean. (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 sheath and other accidents. 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 requirements 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 water and other corrosive materials from corroding, in order to prevent the water tree caused by the aging of the insulation layer and breakdown. 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 familiar with the performance of wire and cable installation personnel or full-time technical personnel, if there are still unclear matters, ball related technical department or technical department of our factory.
HYAT：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套市内通信电缆。
HYAC：铜芯实心聚烯烃绝缘自承式挡潮层聚乙烯护套市内通信电缆。
HYA53：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装聚乙烯护套市内通信电缆。
三相电机六个引出线头分不清首尾端，必须先判断别三相绕组的首尾端，才能进行电动机的Y形和三角形联结，定子绕组首尾端判别方法如下：用万用表判别一种方法是：用摇表或万用表欧姆档找出三相绕组每相绕组的两个引出线头。
做三相绕组的假设编号UUVVWW2.再将三相绕组假设的三首三尾分别连接在一起，用上万用表，用毫安档或微安档测量，1。
用手转动电动机转子，若万用表指针不动，则假设的首尾端均正确。
若万用表指针摆动（如所示），说明假设编号的首尾有误，应逐相对调重调，直到万用表指针不动为止，此时连在一起的三首三尾正确。
如采用75－9同轴电缆时，摄像机和监视器间的距离在500m以内可不加电缆补偿器。
HYA通信电缆，HYA22HYA23铠装通信电缆用途：实心绝缘填充型电缆适用于本地电信网的城市与乡镇电信线路，也适用于接入公用网的专用网线路。
产品描述：特性阻抗120欧姆，导体为2*2*24AWG多股镀锡电解铜丝绞合而成，花色绝缘护套宜于安装识别，铝箔/聚酯带总体****屏蔽，附加独立多股绞合镀锡铜丝接地导体，工业灰色PVC外护套，符合ULAWM2919文件。