GWDZR-X隔氧层低烟无卤阻燃电缆NH-X耐火电缆敷设在对耐火有要求的室内、隧道及管道中，GNH电缆除耐火外要求高阻燃的场所。
GNH-X隔氧层耐火电缆WDNH-X低烟无卤耐火电缆敷设在有低烟无卤耐火要求的室内、隧道及管道中，GWDNH电缆除低烟无卤耐火特性要求外，对阻燃性能有更高要求的场所。
耐火电缆广泛应用于高层建筑、地下铁道、地下街、大型电站及重要的工矿企业等与防火安全和消防救生有关的地方，例如，消防设备及紧急向导灯等应急设施的供电线路和控制线路。
用途：耐火电缆广泛应用于高层建筑、地下铁道、地下街、大型电站及重要的工矿企业等与防火安全和消防救生有关的地方，例如，消防设备及紧急向导灯等应急设施的供电线路和控制线路。
Computer cable sheath: one, the scope of application: this product is fit for ac rated voltage up to and including 300/500 v or 1000 v dc electronic computer network and automation control system of signal transmission, high anti-jamming performance re of the detection device and instrument connections. Second, implement standard SPTL/ three, use features: 1. The cable conductor of long term working temperature should be allowed no more than 70 ℃, in the process of using cable should prevent high temperature radiation or contact; Ambient temperature under installation should not below 0 ℃. 2. Allowable bending radius of cable laying and installation: non-armoured layer cables shall be no less than 6 times the outer diameter of the cable; The armoured or shielded cable shall not be less than 12 times the outer diameter of the cable. The soft cable of shield layer structure should not be less than 6 times the outer diameter of the cable.
VV22铜芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆。
VVR22铜芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套软电力电缆。
VLV22铝芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆。
VV32铜芯聚氯乙烯绝缘钢丝铠装聚氯乙烯护套电力电缆。
In order to maintain compatibility, EIA/TIA 568B is commonly used to make mineral net wire. A wiring is applied to the whole network wiring, but the network connection with rj-45 socket at both ends is feasible in the network whether it is 568A or 568B.
两线制变送器因为信号起点电流为4mA.DC，为变送器供给了静态作业电流，一起外表电气零点为4mA.DC，不与机械零点重合，这种“活零点”有利于辨认断电和断线等毛病。
并且两线制还便于运用安全栅,利于安全防爆。
两线制变送器如图一所示，其供电为24V.DC，输出信号为4-20mA.DC，负载电阻为250Ω，24V电源的负线电位最低，它即是信号公共线，关于智能变送器还可在4-20mA.DC信号上加载HART协议的FSK键控信号。
Product introduction - mine control cable: MKVV mine control cable | | MKVVR mine control soft cable shielding control cable MKVVP mining | | MKVV32 mine sheathed control cable MKVVRP mine soft cable shielding control | | ZR - MKVV MKVV22 mine sheathed control cable for mine fire control cables with control cable | | coal mine coal mine with cable | | | control cable for mine cable for mine control cable MKVV | mining control cable MKVV22 | mining control cable MKVVR | mining shielding control cable MKVVP | mining MKVVRP shielding control cable | mine wire armouring control cable mkvvvv32 mine wire armouring control cable mkvvvv32? (2-61 core)
产品标准GB参照IEC227标准型号、名称及使用范围型号额定电压名称使用条件ZRA-KVVZRC-KVV450/750V0.6/1KV聚氯乙烯绝缘聚氯乙烯护套阻燃控制电缆要求阻燃固定敷设于室内、电缆沟、托架及管道中，或户外托架敷设ZRA-KVVPZRC-KVVP聚氯乙烯绝缘聚氯乙烯护。
The fundamental characteristic is that it may burn out and not run in the case of fire, but it can spread fire. Generally speaking, in case of electric wire fire, it can be put in the local scope, not to produce spread, keep other kinds of e, avoid causing greater loss.
主要产品型号HYA、HYAC、HYAT、HYAT53、HYA531、 HYA（管道/架空）内导体线径（mm）：0.40、0.50、0.60、0.70、0.80、0.90对数 （对）：5—30002、 HYAC（架空 ） 内导体线径（mm）：0.40、0.50、0.60、0.63、0.70、0.80、。
6、铠装通信电缆电气特性：电缆符合基本电缆的全部电气要求。
4、使用条件电缆使用环境温度为－40℃～+50；在25℃时湿度为95%；电缆敷设温度≥－10℃；电缆敷设时的、弯曲半径MHYV≥10倍电缆外径，其余型号≥15倍电缆外径。
2.电缆耐火防护电缆数量较少时，可用防火涂料、包带加于电缆上或把电缆穿于耐火管。
同一通道中电缆较多时，宜敷设于耐火槽盒内，且对电力电缆宜用透气型式，在无易燃粉尘的环境可用半封闭式，敷设在桥架上的电缆防护区段不长时，也可采用阻火包。
带电接线的顺序：先接地线再接零线再接火线。
带电拆线的顺序：先拆火线再拆零线再拆地线。
温馨提醒：不管有电没电，都当有电操作。
电线排列顺序：从左到右，蓝，黄，绿，红。
（零，火，火，火）4.插座的标准接线：左零右火中地线（特殊插座如有标注，按标注接线）5.压线时要注意导线所弯的方向要和螺栓拧紧的方向一致。
做工程或者安装时，在电箱或者接线盒里要将线路中的各种进出电线留出一定的长度，以方便日后检修使用。
Spin cassette XF5-273 communication cable transfer box, adopting advanced technology at home and abroad, in accordance with the international advanced standard production in the eighty s of cable wiring e, for the city, the town of telecommunication network backbone cable and wiring cable transfer. Features: 1. The connection jumper adopts rotary clamp-type connection and is sealed with silica gel on the metal clip, because it is not only reliable and durable, but also easy to operate and repair without stripping. 2. The wiring terminals in the handover box shall be arranged in 25 pairs as a basic unit, consistent with the basic units of the local telephone cables and marked with Numbers on the terminals to facilitate construction and maintenance. 3. The structure, arrangement and installation dimensions of the wiring modules are exactly the same as those of 3M products and can be used for each other. 4. The box body is treated by electrostatic spraying, beautiful and generous, with clear lines, good anti-corrosion and waterproof performance and long service life. Main technical parameters: the environment temperature: - 40 ℃ ~ + 65 ℃ atmospheric pressure: 70 ~ 106 kpa relative humidity: 95% or less is random ends and insulation resistance between terminals and ground > 5 x 104 Μ Ω. When connecting any two ends and any terminals and grounding to 1000V ac, there shall be no breakdown or flying arc in 1min. Contact resistance between wire and terminal < 5 x lO - 3 Ω.
（7）低压电缆不应采用铝芯，采区低压电缆严禁采用铝芯。
电缆截面的选择电缆截面的选择包括高压电缆截面的选择和低压电缆截面的选择，并以低压电缆截面的选择为主。
1.电缆主芯线的选择一般采区低压供电线路都比较长，在运行中电缆流过电流会产生压降而发热。
NH-VV：铜芯聚氯乙烯绝缘聚氯乙烯护套耐火电力电缆NH-VV22：铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装电缆火力电缆NH-KVV：铜芯聚氯乙烯绝缘聚氯乙烯护套耐火控制电缆NH-KVV22：铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装耐火电力电缆NH-BVV：铜芯聚氯乙烯绝缘聚耐火电缆（电线）NH-BVV22。
3、产品型号、名称及使用范围型号名称使用范围YVV聚氯乙烯绝缘、聚氯乙烯护套仪表用电缆固定敷设，用于仪器、仪表的连接YVVP聚氯乙烯绝缘、聚氯乙烯护套仪表用屏蔽电缆同上，用于要求抗干扰的情况下RVV聚氯乙烯绝缘、聚氯乙烯护套仪表用软电缆用于要求柔软的场合RVVP聚氯乙烯绝缘、聚氯乙。