隆尧铠装低烟无卤通讯电缆WDZ-HYA23冬季

隆尧铠装低烟无卤通讯电缆WDZ-HYA23冬季

　　二、产品执行标准：企业标准三、使用特性：1．额定电压：UO/U300/500V.2．导体线芯高工作温度：聚氯乙烯及低卤低烟阻燃聚氯乙烯绝缘：70℃和105℃两种聚乙烯绝缘：70℃；交联聚乙烯绝缘：90℃无卤低烟阻燃聚烯烃：70℃无卤低烟阻燃交联聚烯烃90℃和125℃两种3．低环境温度：固定敷设－。
　　2、电缆的使用特性及运行敷设条件额定电压0.6/1KV聚氯乙烯绝缘动力电缆①电缆导体的长期允许工作温度：≤70℃②短路时（长持续时间不超过5S）电缆的高工作温度：160℃③电缆敷设后经受直流电压3.5KV/15min不击穿。

• communication cables for transmitting incoming signals; Often laid underground or overhead.

The shielding layer can not only restrain the electromagnetic wave from transmitting, but also act as a channel for short-circuit current, which can protect the neutral core. 6/10 kv dedicated cable frequency conversion motor, considering the cables, external force is often in the process of using radial outside the cable shielding layer increased galvanized steel tape armoured layer (between shielding layer and steel tape armoured layer of sleeve).



　　他将此电缆敷设于纽约，开创了地下输电。次年，英国人卡伦德发明沥青浸渍纸绝缘电力电缆。1889年，英国人S.Z.费兰梯在伦敦与德特福德之间敷设了10千伏油浸纸绝缘电缆。1908年，英国建成20千伏电缆网。

2015年4月，某电站全停电恢复送电时，在对220kV#2主变充电时，#2主变高压侧202断路器合闸，由于#2主变空充产生了很大的励磁涌流，#1发电机系统也因此产生了和应涌流，由于涌流中含有较大的非周期分量，从而使进入#1发电机两套保护装置电流均发生了畸变。因发电机机端及中性点使用的CT不是同一厂家生产，CT的传变特性存在差异，饱和程度也不一致，发电机机端和发电机中性点的电流畸变程度不一致，造成发电机差动回路出现差流，引起#1发电机(正常运行的)主二套保护装置发电机比率差动保护动作，#1发电机出口011断路器跳闸。

　　矿用通信电缆型号以及用途：MHYVP：煤矿用聚乙烯绝缘编织屏蔽聚氯乙烯护套通信电缆，用于电场干扰较大的场所作信号传输，适用于固定敷设MHY32：煤矿用聚乙烯绝缘钢丝锴装聚氯乙烯护套通信电缆，用于平巷，竖井或斜井作主信号传输MHYVR：煤矿用聚乙烯绝缘聚氯乙烯护套通信软电缆，用于矿场作普通信号传输，可。

　　智能电表抄表专用线--RS-485通讯电缆本产品是严格按RS-485通讯协议规定设计生产的产品。使用RS485通讯线时，对于特定的传输线路，主机(召测设备)到仪表的485口间的电缆长度与数据信号传输的波特率成反比；这个长度主要受信号的失真以及噪声的影响所影响。
　　我们的拖链电缆种类繁多，芯数从单芯到60芯不等，单芯面积更是涵盖类了0.2-180的所有型号。导体结构：符合DINVDE02956类标准。芯线绞合：芯线小节距绞合成缆。绝缘：特殊丁腈复合料材料绝缘。2、铝箔、裸金属丝编织双层屏蔽，PVC外护套，阻燃,外观紫色。

　　(3)敷设时电缆时的环境温度不低于0℃，电缆弯曲半径单芯电缆：无铠装电缆不小于电缆外径的20倍，铠装电缆不小于电缆外径的15倍：多芯电缆：无铠装电缆不小于电缆外径的15倍，铠装电缆不小于电缆外径的12倍。



Power cable, armored cable, buried cable 1. Product introduction:? Power cable in transmission and distribution, the company produced ac rated voltage 0.6/1 kv polyvinyl chloride insulated power cable and crosslinked poly (35 kv and below power cable, its performance not only meets GB1276 and "and IEC60840, and has formed series, namely, flame retardant, fire-resistant type, cold type and waterproof of power cable.

　　电力电缆产品说明本厂生产的聚氯乙烯绝缘电力电缆采用IEC标准，适用于3.6/6KV及以下输配电系统，近年来又开发了阻燃电缆、耐火电缆、低烟无卢电缆及五芯系列电力电缆。执行标准:GB/T等效采用IEC502),阻燃电缆、耐火电缆还符合IE332-3,IEC331,亦可按用户所需的技术需求生产。

1大浪涌电压：继电器能承受的而不致造成性损坏的非重复浪涌(或过载)电流。1电器系统峰值：在继电器工作状态继电器输出端能够承受的大迭加的瞬时峰值击穿电压。1电压指数上升率dv/dt：继电器的输出元件能够承受的不使其导通的电压上升率。1工作温度：继电器安规范安装或不安装散热板时，其正常工作的环境温度范围。功率固态继电器的特性参数包括输入和输出参数，下面以北京科通继电器总厂生产的GX-10F继电器为例，列出输入、输出参数，详见表1，根据输入电压参数值大小，可确定工作电压大小。

　　二、电缆的型号、名称和用途序号型号名称使用范围1VVVLVVYVLY聚氯乙烯绝缘聚氯乙烯/聚乙烯护套电力电缆敷设在室内、隧道及管道中，电缆不能承受机械外力作用VV22VLV22VV23VLV23聚氯乙烯绝缘聚氯乙烯/聚乙烯护套钢带铠装电力电缆敷设在室内、隧道内直埋土壤，电缆能承受机。



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 buried depth of 1-35kv cable is not 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 is not 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. 6 kv and above cable joint: (1) installing a cable terminal head, must be stripped semiconductor electric shielding layer, operation shall not damage the insulation, should avoid mark uneven situation, when necessary use sand paper to grind; The shield end should be flat and the graphite layer (carbon particles) should be cleaned. (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 accidents such as burning sheath. 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 re 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 erosion of water and other corrosive materials, so as to prevent breakdown due to the aging of the insulation layer caused by water trees. 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 done by the installation personnel or full-time technical personnel familiar with the performance of wire and cable. If there are still unclear matters, please consult the relevant technical department or the technical department of our factory.