本产品适用于各种仪器仪表的连结，以及信号传输。
它具有耐高温、低温、耐腐蚀、抗老化等优点、对特殊场所或恶劣环境中的使用是目前最理想的产品，正常使用温度为-60℃—250℃。
本厂生产的高温计算机电缆保证1、成品电缆导体直流电阻应符合GB/T的规定。
ZR-BPGVFP2硅橡胶绝缘丁腈护套铜带绕包屏蔽耐高温变频电力电缆。
ZR-BPGVFPP2硅橡胶绝缘丁腈护套铜丝编织铜带绕包屏蔽耐高温变频电力电缆。
ZR-BPGVFP3硅橡胶绝缘丁腈护套铝聚酯复合膜绕包屏蔽耐高温变频电力电缆。
6／10千伏变频电机专用电缆在满足GBT／标准外，增加了电容和电感等电性能要求。
根据变频电机专用电缆的实际使用情况并参照GB／T和ABB公司对电力传动电缆的技术条件，确定了电缆的电气性能参数。
生产规格：对数2对—300对，导体直径为：0.4、0.5、0.6、0.7、0.8（mm）电缆对数型号（0.5）型号（0.5）5对HPVV5x2x0.5HPVVP5x2x0.510对HPVV10x2x0.5HPVVP10x2x0.520对HPVV20x2x0.5HPVVP20x2x0.。
计算机电缆技术参数：产品额定电压(U0/U):300/500V长期工作温度为70℃敷设时环境温度不低于:固定敷设-40℃,非固定敷设-15℃最小弯曲半径：无铠装层应小于电缆外径的6倍，带铠装层的电缆应不小于电缆外径的12倍在20℃时用直流500V电压试验稳定充电1min后绝缘电阻应不小于2500MΩ。
低压断路器在正常的情况下起到接通和断开负荷电流，还可以具有过负荷和短路保护的功能。
那么对于配电变压器低压侧的断路器怎么去整定和选择呢？配电变压器低压侧总断路器的设置，断路器具有长延时、短延时和瞬时三段式电流保护，为了保证变压器的保护与出线回路的选择性的配合，通常配电变压器的低压侧进线断路器不宜设置瞬时保护。
下面一一介绍低压断路器三段式电流保护值的整定计算。
配电变压器低压侧断路器三段式电流保护值的整定计算1.1低压断路器长延时过电流脱扣器的整定电流低压断路器长延时过电流脱扣器的整定电流宜等于或者接近变压器低压侧的额定电流值。
1、YJV22－1KV3×35mm2 +1×16mm22、YJV22－1KV3×95mm2 +1×50mm23、YJV22－1KV3×120mm2 +1×70mm24、YJV22－1KV3×150mm2 +1×70mm25、YJV22－1KV3×185mm2 +1×95mm26、YJV22－1KV3。
Armored communication cable sheath: black high molecular weight low density polyethylene or polyvinyl chloride sheath. Sheath thickness may depend on the basic cable outer diameter.
DJVPV22DJYPV22DJYJPV22编织分对屏蔽（铜丝或镀锡丝）、铠装。
DJVP2V22DJYP2V22DJYJP2V22铜塑复合膜分对屏蔽、铠装。
DJVP3V22DJYP3V22DJYJP3V22铝塑复合膜分对屏蔽、铠装。
型号表示： 1）绝缘的类型与代表符号 Y－－实芯聚烯烃绝缘 YF－－泡沫聚烯烃绝缘 YP－－泡沫/实芯皮聚烯烃绝缘 2）金属屏蔽带的类型与代表符号 A－－涂塑铝带粘结屏蔽聚乙烯护套 3）结构特征符号及表示意义 T－－石油膏填充 C－－自承式 4）电缆外护层形式。
6、使用特性：电缆导体的长期允许工作温度为70℃，电缆敷设温度应不低于0℃。
电缆允许的弯曲半径：对有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12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。
产品用途：用于视频监控线路、会议视频等电子线路架设、工程装修讯号传输、影音器材连接以及其它电子装置，无线电通讯广播设备的有关无线电电子设备中传输射频信号。
使用条件：1：使用温度（℃):-40～+60℃2:相对温度:40℃时达98%3:安装敷设温度不低如:-15℃4:充许最小弯曲半径:室内不小于5倍,室外10倍。
下载组态信息2.调用modbus功能块西门子的通讯一般都需要调用系统功能块，在“指令”-“通信”-“通信处理器”下可以找到modbus通讯功能块：通讯功能块可以看到这里提供两套modbus通讯模块，这两套都可以使用（暂不清楚具体的区别），本文选用的是下面的版本较低的模块。
新建程序段，将配置模块MB_COMM_LOAD和主站模块MB_MASTER拖入程序中：调用功能块功能块调用后要对必要的引脚进行赋值，各个引脚的功能可以按F1查看，建立一个DB数据块，声明一些变量连接功能块的引脚：声明变量上面声明了两个容量为5的字数组，用于数据的发送和接受，这个容量可以根据需求任意设置。
绝缘线对：把单根绝缘线按照不同的节距扭绞成对，并采用规定的色谱组合以便识别线对，聚氯乙烯护套。
用途：主要用于传输音频、150kHZ及以下的模拟信号,也可用于传输2048kbit/s以上的数字信号。
适用于远程光网络单元到用户之间的传输系统，以及大楼布线系统中楼宇间传输的子系统。
仪器介绍耐油屏蔽电缆RVVYP系列RVVYPZR-RVVYPZR-RVVYP22额定电压450/750V及以下聚氯乙烯绝缘电缆二芯或多芯屏蔽和非屏蔽软电缆一、执行标准：GB5023.7-1997二、用途：适用于交流额定电压300/500V及以下电器仪表，电子设备及自动化装置用。
DJYP3VP3R 聚乙烯绝缘对绞铝塑复合带分屏蔽及总屏蔽聚氯乙烯护套软计算机电缆 敷设室内、电缆沟、管道等要求静电屏蔽场合。
DJYPV22 聚乙烯绝缘对绞铜线编织分屏蔽聚氯乙烯护套钢带铠装计算机电缆 敷设室内、电缆沟、管道等要求静电屏蔽并承受较大机械外力固定场合。
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.