最高传输频率分别为30MHz与100MHz。
本产品适用于市内、近郊和局部地区的通信线路。
导电芯线采用标称直径为0.4、0.5、0.6、0.7、0.8、0.9mm的软铜线。
绝缘单线绞合成对后采用心式（10对、20对）或单位式（30对及以上）绞合成缆芯，每个基本单位的子单位扎带颜色相同，各基本单位扎带颜色按全色谱要求排列。
一、阻燃本安安全系统用检测仪器电缆1、性能特性：a、电缆长期工作温度：70℃b、最低环境温度：－40℃c、电缆敷设温度：不低于0℃d、敷设时允许弯曲半径：不小于电缆外径6倍，铠装型电缆则应不小于电缆外径的12倍e、额定电压：300/500V2、电缆的型号、名称、适用范围：型号名称适用范围ZR-B。
Integrated stranded railway signal cable implementation standard GB/ t2476-1993. Railway signal cables are suitable for transmission of railway control signals, audio signals or fixed cables for fixed installation in rated voltage ac 500V or dc 1000V or below. Product name, model, specification and scope: plastic insulation and PVC sheathed railway signal 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 signal communication, fire alarm signal, telegraph and other automatic device systems with rated voltage ac 500V or dc 1000V or below. Polyethylene polythene insulation composite sheath steel tape armoured PVC sheathed railway signal cable 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 audio signal transmission and fixed installation of railway signal and group control automation assembly line, is of general automatic transmission railway signal, can also transmit frequency shift automatic block and business phone and other audio signal. 4, using features: cable in - 40 ℃ to + 50 ℃ environment use. Cable conductor long-term working temperature shall not exceed 70 ℃. Ordinary sheath of the cable laying under the environment temperature is not lower than 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 disturbance
Specification range of frequency conversion cables; 1, some conclusions: 3 core nominal section (1.5 ~ 240 ㎜ 2). 2, some conclusions: 6 core (3 + 3) nominal section (thread core section: 2.5-240 ㎜ 2, line core section: 0.5 ㎜ 35 (2). Example: copper 0.6/1 kv crosslinked polyethylene insulated copper wire braided shielding, polyvinyl chloride sheathed flame-retardant the main loop of the inverter with cable, 3 x 185 + 3 x 35 was expressed as: BPYJVP - 0.6/1 kv 3 x 185 + 3 x 35 note: detailed technical parameters of ball I on cable company LTD.
Armoured cable including armoured thermocouple, armored thermal resistance, the armored heater and sheathed wire, mainly used in chemical industry, smelting, machinery manufacturing, power generation and scientific experiments, such as temperature crib, transmission and special heating, dosage is sheathed hot galvanic couple.
不信可以拆开自己家已经接好的开关，用电笔测一下——理论上来讲，当开关关闭时，只有火线接线柱能够点亮电笔。
实际使用时，接了零线（灯线）的接线柱十有八九也可以点亮电笔。
只大部分开关，零线带电，所带的电压也比较低，不足以在线路中产生电流。
但如果绝缘性再差一点，产生的电流稍大了，就会给电容充电。
还有一点：开关上带指示灯的时候，关灯时指示灯会亮起，此时需要产生微弱电流——这部分电流会流经电容，并被电容储存起来。
HJVV, HJVVP, HPVV communication cable: mainly used for transmitting audio, 150kHZ and below analog 2048kbit/s and below. Under certain conditions, it can also be used to transmit Numbers over 2048kbit/s. Used for short distance transmission. New sales department of our factory, micro: 15075619608? ? QQ is not convenient to contact! ? HJVV, HJVVP, HPVV communication cable is introduced: used for distribution frame or switch to switch the internal connection between the device (including rural telephone bureau), such as the beginning of the line and terminal, for connecting the city telephone cable to the junction box or distribution frame, inner conductor wire diameter (mm) : 0.40, 0.50, 0.60, 0.70, 0.80, 0.90? Logarithm (yeah) : 5-1000? HPVV low frequency communication distribution cable distribution cable Broadband/product use: suitable for transmission between remote optical network units and users, and between buildings in building wiring. The high transmission is 30MHz and 100MHz respectively.
我国国家标准GB12666.6（等同IEC331）将耐火试验分A、B两种级别，A级火焰温度950~1000℃，持续供火时间90min，B级火焰温度750~800℃，持续供火时间90min，整个试验期间，试样应承受产品规定的额定电压值。
(d)VV22型号比VV型号多加一套铁皮铠装。
(e)铠装后的结构更适合掩埋于地下。
产品特性： (a)U0/U为0.6/1KV及以下。
(b)电缆导体的工作温度不大于70℃，短路时（最长持续时间不超过5s）电缆导体的最高温度不超过160℃。
Purpose of HYAT solid insulated filled cable: solid insulated filled cable is suitable for the urban telecommunication line of the local telecommunication network in the town of wuyu, and also for the special network line connecting to the public network. Mainly used for pipeline laying. The inner and outer surfaces of the cable core and the shield layer are filled with oil paste and poured to prevent water intrusion. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C.
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 equipment, 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.
本产品在获得了CCC及CE标志的认证，符合HD（欧盟统一协调标准）的要求，不仅可以适用于中国市场，也适用于欧洲市场。
按HD标准此电缆型号为H05VV-F。
RVV电缆规格线芯数2×0.50、3×0.50、4×0.50、5×0.50、6×0.50、7×0.50、8×0.50、10×0.50、12×0.50、18×0.50、25×0.50、36×0.50。
SYWV是射频传输线，物理发泡绝缘。
用于有线电视。
RVS与RVV2芯区别：RVS为双芯RV线绞合而成，没有外护套，用于广播连接。
RVV2芯线直放成缆，有外护套，用于电源，控制信号等方面。
RVV与KVVRVVP与KVVP区别：RVV和RVVP里面采用的线为多股细铜丝组成的软线，即RV线组成。
KVV和KVVP里面采用的线为单股粗铜丝组成的硬线，即BV线组成。
AVVR与RVVP区别：AVVR是指线径小于0.5MM的不带屏蔽的电缆，RVVP是指线径大于或等于0.5MM的带屏蔽的电缆。
聚乙稀绝缘综合护套钢带铠装聚氯乙烯护套铁路信号电缆PTYA23PTYA22PTY23PTY22PTYAH23PZYA23PZYA22PZY23PZY220.8mm（1/1.0MM）4-61芯本产品适用于额定电压交流500V或直流1000V及以下传输铁路信号、音频信号或自动信号装置的控制电路，其中综合。
以此类推24对电缆色谱排列：白兰、白橙、白绿、白棕、白灰、红兰、红橙、红绿、红棕、红灰、黑兰、黑橙、黑绿、黑棕、黑灰、黄兰、黄橙、黄绿、黄棕、黄灰、紫兰、紫橙、紫绿、紫棕JDYJY交联聚乙烯绝缘机场助航（灯光）电缆适用于机场助航灯光输电系统。
绝缘材料：高密度聚乙烯或乙／丙共聚物，绝缘线的颜色符合全色谱标准。
绝缘线对：二根不同颜色的绝缘线按不同的节距扭绞成对，采用规定的色谱组合以便识别。
缆芯结构：以25对为基本单位，超过25对的电缆按单位组合，每个单位用规定色谱的单位扎带绕扎，以便识别不同的单位。
Fire - resistant cable is able to maintain a certain period of normal operation under the condition of flame burning, can maintain the integrity of the line. That, when burned, fire-resistant cable less acid gas smoke, fire flame retardant performance is greatly improved, especially when burnt, accompanied by water jet and mechanical blow, cable still can maintain a full operation.