。
使用特性●工频额定电压U0/U为380/660V、660/1140V、1.9/3.3kv、3.6/6kv、6/10KV、8.7/10KV。
●电缆导体的最高允许工作温度：65℃90℃●电缆允许最低的工作环境温度为-35℃●电缆弯曲半径：不大于电缆外径的6倍。
对有屏蔽层结构的软电缆，应不小于电缆外径的6倍。
对无铠装层的电缆应不小于电缆外径的6倍。
MKVV煤矿用控制电缆、MKVVP煤矿用塑料控制电缆、MKVV22煤矿用塑料绝缘电缆执行标准：企标Q/TX本标准适用于煤矿用铜芯聚氯乙烯护套阻燃控制电缆。
4.安装敷设温度：不低于0℃5.电缆允许最小弯曲半径：非铠装、联锁或编织铠装电缆不小于电缆外径的6倍铜带屏蔽或钢丝、钢带缠绕铠装电缆不小于电缆外径的12倍四、主要技术指标性能项目单位指标导体线芯直流电阻(20℃)Ω/km标称截面mm20.50.75。
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。
NHB—KVV22适用范围：同NHB—KVV，用于能承受机械外力的场所，电缆弯曲半径不小于电缆外径的15倍。
煤矿用控制电缆 MKVVMKVV22MKVV32MKVVRMKVVRP MKVVP煤矿用控制电缆产品执行标准：MT煤矿用控制电缆用途：本产品适用于交流额定电压u0/u为450/750V及以下的控制监控回路及保护线路和配电装置中电器仪表的连接线。
上式中Nr必为整数，否则没有意义。
此时要注意m必须为偶数。
两相HB型混合式步进电机，当P=2时，主极为8(m=4)代入上式，得：Nr=8n±2此为两相HB型混合式步进电机的关系式。
两相HB型步进电机的步距角为通常的1.8°，将n=6代入上式，得Nr=50。
两相HB型混合式步进电机定子主极为8，转子齿为50个的结构如下图所示。
两相HB型步进电机的步距角为0.9°，定子主极为16，m=8，n=6，得转子齿为100个的结构如下图所示。
The dc resistance of the conductor conforms to GB/T3956
1.5综合护套铁路信号电缆的理想屏蔽系数≤0.8；铝护套铁路信号电缆的理想屏蔽系数≤0.32型号、名称及规格型号名称敷设范围规格(芯)PTYV聚乙烯绝缘聚氯乙烯护套铁路信号电缆敷设在土壤、槽、管中，能承受一般的机械外力。
Armored communication cable mechanical protection layer: type 53 adopts 0.15mm thick corrugated steel belt, which is longitudinal wrapped on the basic cable and overlapped on both sides. The surface of the steel belt is coated with plastic to prevent corrosion and water intrusion.
国标GB4706.规定的电线负载电流值（部分）1平方铜芯线允许长期负载电流为:6A---8A1.5平方铜芯线允许长期负载电流为:8A---15A2.5平方铜芯线允许长期负载电流为:16A---25A4平方铜芯线允许长期负载电流为:25A---32A6平方铜芯线允许长期负载电流为。
对有屏蔽层结构的软电缆，应不小于电缆外径的6倍。
对无铠装层的电缆应不小于电缆外径的6倍。
橡套软线-YZ型橡套电缆用途：本产品适用于交流额定电压450/750V及以下家有电器、电动工具，各种移动式电器设备和电焊机与焊钳的连接线路。
Electronic computer shielded cable, choose high pressure polyethylene insulation, small dielectric constant use to ground, and the screen, the total screen (or three quad twisted, group screening, group screen a total screen), such as structure, with a small dielectric loss, transmit ability strong, good anti-jamming performance characteristics, can be reliably transmitted weak the analog signal or digital signal, can be widely used in electricity, metallurgy, petroleum, chemical, textile and other departments of detection and control computer system or automated devices, as well as general industrial computer. High-temperature F46 computer cable belong to one of the special cable, electronic computer system is in urgent need of modern industrial construction of form a complete set of products, it is widely used in energy industry, metallurgical industry and petrochemical industry and other industrial enterprises and scientific research department of the electronic computer, instruments and meters, all kinds of automatic detection e, and other information processing e signalling and the control system. Application: it is installed in indoor, cable trench, pipe and other places where high temperature resistance electrostatic shielding is required
以免用户外出时家里停电，导致恢复供电后自己家不能合闸所有插座回路，无论是普通插座回路还是大功率插座回路，都建议使用漏电保护器。
照明回路不需要附件——照明回路电流小、灯具高，漏电也没有太大危害。
加上现如今的LED灯具质量堪忧，安装漏电附件后反而容易引起跳闸——无解。
最后套用数据家用开关有一套固定的参数，型号选择DZ47型或相应的改造型号——DZ47是国际通用型号名称，除此以外，各厂家还出了自己研发的型号。
Insulation resistance: each conductor and the rest of the grounding wire core, the control cable is more than 10000 m Ω. Km, more than 3000 m Ω HYAT cable. Km.
RVVZ cable, RVV cable, RVVP cable, ZRVVR cable, ZRYJVR cable VVP shielding cable implementation standard jbRVVP shielding cable product introduction: RVVP shielding cable, rated voltage 300V/300V. Some core from 2 to 24 core, according to the national standard color separation between more than two core twisted into line, direction of outer stranded for right-handed, soft rounded oxygen-free copper wire or tin plating oxygen-free copper wire shielding, widely used in instruments, meters, building intercom, monitoring, monitoring control installation. Implementation standard: jbproduct long-term mass supply packaging specification 200 m/roll; 500 meters/anaerobic copper coil wire core material number 1 ~ 24 core sheath material PVC/PE wire 26 largest diameter (mm) nominal section 0.12 ~ 2.5 (was) RVVP RVVP shielded cable core: twisted into cable, insulated conductor (PP) RVVP winding and polyester film screened cable sheath: black/white PVC shielded cable USES: used in building automation control system, anti-theft alarm system, fire control system, three table from copying systems, communications, audio, sound system, meter, electronic e and automation devices such as anti jamming circuit connection.
Flame-retardant audio cable; ZC manufacuring HYA, ZC HYAC, ZC - HYAT, ZC - HYA53, ZC HYAT53, ZC HYV, ZC - HYA23, ZC - HYAT23, ZC HYA22, ZC HYAT22 product description: our factory produced communication cable is suitable for the fixed overhead laying or buried in the city ZR - manufacuring HYA: copper solid tidal polyolefin insulation layer of flame retardant polyethylene sheath duct ZC - HYAT: Copper solid tidal level flame retardant polyolefin insulated filled type PE sheathed in communication cable ZC - edge tidal layer PE sheathed gangsu belt sheathed flame-retardant PE sheathed in communication cable ZC - HYAT53: copper solid polyolefin insulated filled type HYAC: copper solid polyolefin insulation messenger tidal level flame retardant polyethylene sheath duct ZC - HYA53: copper solid polyolefin unique tidal layer PE sheathed gangsu belt sheathed flame-retardant PE sheath duct ZC - HYA22: Copper solid tidal polyolefin insulation layer polyethylene sheath steel tape armoured flame retardant PVC sheathed in communication cable ZC - HYA23: copper solid tidal polyolefin insulation layer polyethylene sheath steel tape armoured flame retardant polyethylene sheath duct ZC - HYAT22: copper solid polyolefin insulation filling type tidal layer polyethylene sheath steel tape armoured flame retardant PVC sheathed in communication cable ZC - HYAT23: copper solid polyolefin insulated filled type tidal layer PE sheath steel tape armoured flame retardant PE sheathed communication cable in the city
产品采用标准：MT818.高温屏蔽电缆、阻燃高温线、高温耐油电缆、高温耐腐电缆、氟塑料防腐软电缆、氟塑料高温耐油软电缆、高温计算机电缆、进口高温氟塑料控制电缆、高温镀锡线、高温镀银线、镀锡高温屏蔽线、镀银高温屏蔽线、高温耐火电缆、屏蔽高温软电缆、高温屏蔽软线、高温特种防腐电线、热电厂专用高温电缆、化。