PTYA23铁路信号电缆（定尺生产）雄县截面图VV223X25铠装电缆俊秀
VV32－PYJV32－PVLV32－PYJLV32－P聚氯乙烯(交联聚乙烯)绝缘金属屏蔽细钢丝铠装聚氯乙烯护套电力电缆。YJLV42－P聚氯乙烯(交联聚乙烯)绝缘金属屏蔽粗钢丝铠装聚氯乙烯护套电力电缆。
Low smoke halogen free power cable is suitable for transmission power in power lines with rated voltage of 0.6/1kv and below. The low-smoke halogen free cable is produced by our company according to the French RCCE and NF series, GB/T18380, GB/T19216, GB/T17651, GB/T17650 and so on.
The advantages of electric cable are more and less. Generally, it is buried in the soil or laid in indoor, ditch, middle, line insulation distance is small, no tower, little, basically no surface space. High reliability. It is less affected by climatic conditions and surroundings, and has high transmission performance and reliability. It has more favorable conditions for the development of ultra-high voltage and large capacity, such as low temperature, superconducting power cable, etc. The distributed capacitance is large. Less work. Less likely.
KVV22KVV23聚氯乙烯绝缘聚氯乙烯聚乙烯护套钢带铠装控制电缆敷设在室内、电缆沟、管道内及地下，电缆能承受机械外力作用。KVVPKVVP2KVVRP聚氯乙烯绝缘聚氯乙烯护套铜带铜丝编织屏蔽控制电缆敷设在室内、电缆沟、管道内及地下，电缆具有防干扰能力。
信号电缆按护套类型包括塑料护套（PTY03、PTY23）、综合护套（PTYA23、PTYA22）、铝护套（PTYL23、PTYL22）信号电缆；2.信号数字电缆分为塑料护套（SPTYW03、SPTYW23）、综合护套（SPTYWA23）铝护套（SPTYWL23）、内屏蔽（SPTYWP03或SPTYW。
使用外加电阻的驱动：步进电机的绕组使用粗导线时，线圈电阻Rw值很小，如下图所示。在各相线圈中，串联外部电阻R，为的是限制绕组流过的电流小于额定电流I。限制绕组流过电流的方法，可采用降低电源电压和串联外部电阻R的两种方法。假设步进电机的线圈电感为L，绕组电阻为Rw电气时间常数为τ，外加电阻R时，电气时间常数公式如下：外加电阻使时间常数τ变小，电流上升比较快，从而使步进电机的驱动脉冲频率变快，上图所示为无外部电阻与带外部电阻R的电流上升曲线的比较，t1时刻，没有电阻R时，电流只上升到I1，有电阻R时，电流上升到I2，使高速时的转矩得到很大的改善；缺点是铜耗增大。
Control cables and flame retardant (ZR) for crosslinked polymer insulation 0.6/1kv can be manufactured as re
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.
本产品是阻燃类产品。二、执行标准 MT818.《煤矿用阻燃通信电缆》及企业标准Q/JG。三、使用特性 1、电缆长期工作温度：-30~60℃ 2、电缆敷设温度： 不低于0℃3、MHYV型弯曲半径不小于电缆直径的10倍。
2、铝箔、裸金属丝编织双层屏蔽，PVC外护套，阻燃,外观紫色。3、符合VDE0472标准；B类试验（IEC332.1）。4、带米标识，分100米、200米、300米包装，500米、1000米木轮包装。5．如用屏蔽编织线和屏蔽箔，应在两端与保护接地连接，并通过尽可能的大面积屏蔽接线来复盖，以保持良好的传导性。
产品用途：敷设在室内、电缆沟、管道等要求耐高温静电屏蔽的场合。6、最低安装敷设温度：序号1～4-45℃序号5～140℃。HJVV、HJVVP、HPVV通信电缆用途：主要用于传输音频、150kHZ及以下的模拟信号2048kbit/s及以下的数字信号。
Identification and length marking: there is a sexual identification mark on the cable appearance, and the marking interval is not more than 1m.
严禁带病和酒后进行试验。被试物须无机械损伤，与试验物周围带电体应有足够安全间距，被试物应可靠接地。穿戴好防护用品。试验电工工作中要求。试验时不少于二人，应指定一名有经验者为试验负责人。高压试验人员应明确分工，试验时应装遮栏，或在被试区指定专人警戒。试验负责人在现场发令，其他人应服从指挥。当发现人员，设备危险时，有权停止试验。试验中，试验人员不准擅离岗位。特殊情况要离开时，应停止试验，拆除试验电源。重新试验要检查结线无变动后，方可接上电源。
Strict control of national standard production; Outdoor telephone line (with ointment filling and armor - uv protection and waterproof - can be buried in the ground) HYAT53 communication cable filling oil cream series: mainly used for the more conductor wire and cable core to fill the gap, moisture-proof and insulation. It has high melting temperature, suitable viscosity and good low temperature toughness. Excellent heat and water resistance; Electrical insulation performance, small loss, and good compatibility with the inner and outer sheath of the cable, is a good heating applied cable filling composite. The model of HYAT cable filled with pva is zrc-hyat HYAT23 HYAT53 zrc-hyat23 zrc-hyat23 zrc-hyat 53HYYT. ZRC - HYAT; Low smoke halogen free communication cable filling oil paste series wdz-hyat wdz-hyat23 wdz-hyat53 oil-filled communication cable? HYAT??? HYAT23? HYAT53 flame-retardant oil-filled communication cable? ZRC - HYAT; WDZ - HYAT; ZR - HYAT53? WDZ - HYA53; Zr-hya23 communication cable model: HYA; HYA22; HYA23; HYA53; ZRC - manufacuring HYA; ZRC - HYA53; WDZ - manufacuring HYA; Oil-filled communication cable: outdoor oil-filled cable HYAT? HYAT23? HYAT53HYAT; HYA23; HYAT53; HYAT22; HYYT; ZRC - HYAT; WDZ - HYAT; ZR - HYAT53; Type: HYAC, HYYC armored audio cable; HYA22; HYA23; HYA53; HYAT22; HYAT23; HYAT53; ZRC - HYA53; WDZ - HYA53; ZR - HYA23; Zr-hyat23 wdz-hyat53 armored audio cable models: HYA53, HYAT53, HYV22, HYA22 (anti-rat, underground)?
HYAT23铜芯实芯聚乙烯绝缘石油膏填充双面涂塑铝带屏蔽镀锌钢带铠装聚乙烯护套通信电缆。HAVP扩音对讲电缆;扩音系统专用电缆HAVP2X32X0.15+2X48X0.2，火灾报警系统专用电缆HAVP2X32X0.15+2X48X0.2。
RS-485电缆信号线特性阻抗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，外护套颜色可选。
5、色序：白/蓝、白/红、白/绿，白/橙，白/棕，白/黄，白/紫，白/灰，白/黑等，也可用户指定.包装：盒装、胶袋装，轴装计算机电缆DJVPV,DJVVP,DJYVP,DJYJVP,DJYPV,DJYJPV,DJVPVP,DJYPVP,DJYJPVP,JVV,JVVPDJYPRV DJVPVR、DJ。