产品名称产品型号芯数导体截面(m2)聚氯乙烯绝缘和护套铜带屏蔽电缆KVVP2-370.75-10聚氯乙烯绝缘和护套铜带屏蔽铠装控制电缆KVVP2-222-370.75-10聚氯乙烯绝缘和护套控制软电缆KVVR2-370.75-10聚氯乙烯绝缘和护套控制软电缆KVV2-37。
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 direct buried depth of 1-35kv cable is 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 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. ? 6KV and above cable connector:? When installing the terminal head of the cable, the semiconductor electrical shielding layer must be stripped off. During operation, the insulation shall not be damaged. The shield end should be flat and the graphite layer (carbon particles) should be clean. (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 sheath and other accidents. 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 requirements 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 water and other corrosive materials from corroding, in order to prevent the water tree caused by the aging of the insulation layer and breakdown. 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 familiar with the performance of wire and cable installation personnel or full-time technical personnel, if there are still unclear matters, ball related technical department or technical department of our factory.
Type KVRP, P1, P3, zr-kvrp, P1, P3 type 450/750v copper core polyvinyl chloride insulated sheathed cable applicable scope: this product is suitable for the rated voltage 450/750v and below transmission and distribution lines. Execution standard: GB9330-1988 and Q/SCT - J02.04-1999 using features: the highest rated temperature of the cable conductor is: PVC insulated cable is 70 ℃, cross-linked polyethylene insulated cable is 90 ℃. Cable laying the environment temperature is not lower than 0 ℃. The maximum bending radius of cable laying is: for unarmored cable, it should not be less than 6 times of the outer diameter of the cable, and the cable with shield layer or copper belt should not be less than 12 times of the outer diameter of the cable.
Product introduction - plastic insulated control cable | | KVV control cable KVVR control cable | | KVVP control cable shielding control cable KVVP | | KVVRP shielding control cable KVVP2 control cable | | KVVP2-22 control cable KVV22 sheathed control cable | control cable KVV | control cable KVVR | control cable KVVP | control cable KVVRP | control cable KVV22 product details: plastic insulated control cable: GB9330-88 scope of application: This product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit using features: 1, the conductor long-term allowed working temperature is 70 ℃. 2, when laying environment temperature 0 ℃ or higher. 3. Minimum bending radius: 4. For unarmored cable, it shall be no less than 6 times the outer diameter of the cable. 5. The cable with armor or copper shield shall not be less than 12 times the outer diameter of the cable. 6. The soft cable with screen shielding structure shall not be less than 6 times the outer diameter of the cable.
铝塑综合护套在缆芯包带外重叠纵包一层符合规定的双面铝塑复合带,铝带标称厚度为0.20mm.外护层53型电缆在无外护层电缆外纵包一层皱纹钢塑复合带,电缆外护层应符合GB2952.1及GB2952.24的规定。
plc网络是由几级子网复合而成，各级子网的通信过程是由通信协议决定的，而通信方式是通信协议最核心的内容。通信方式包括存取控制方式和数据传送方式。所谓存取控制（也称访问控制）方式是指如何获得共享通信介质使用权的问题，而数据传送方式是指一个站取得了通信介质使用权后如何传送数据的问题。自由口通讯一般是指RS232的串行通讯方式，其通讯距离较短，速率较慢，一般在现场的某些仪表会采用这种方式，比较典型的是西门子的PC-PPI通讯；2.总线一般指RS485的串行通讯方式，其通讯距离和速率要远高于RS232通讯方式，一般现场的PLC或变频器等设备用此协议较多，比较典型的是西门子的Profibus-DP，Modicon的Modbus等；3.以太网采用的是国际通用的以太网通讯协议，具备相当高的速率，但其问题是设备成本较前两种方法要高很多，因此没有总线方式普及。
无卤低烟阻燃电缆的特点是不仅拥有良好的阻燃性能，而且构成低烟无卤电缆材料的不含卤素，燃烧时的腐蚀性和毒性较低，产生极少量的烟雾，从而减少了对人身、仪器、设备的损害，有利于发生火灾时及时救援，虽然有良好阻燃性、耐腐独性、极少烟雾浓度等，但其在机械性及电气性能比普通电缆稍差。
电子计算机用屏蔽电缆本产品技术指标参照IEC189和英国BS53081、用途电子计算机用屏蔽电缆，选用介电常数小的高压聚乙烯绝缘，采用对绞、对屏、总屏（或三线组绞合、组屏蔽、组屏总屏）等结构组成，具有介质损耗小、传输信号能力强、抗干扰性能好特点，能可靠地传输微弱的模拟信号或数字信号，可广泛地应用于发。
2、电缆长期工作温度：-20oC~65oC3、电缆敷设温度不低于0OC，弯曲半径不小于电缆外径的10倍。阻燃性能在规定试验条件下，试样被燃烧，在撤去试验火源后，火焰的蔓延仅在限定范围内，残焰或残灼在限定时间内能自行熄灭的特性。
（SYV线、RVVP线、RVSP线、RVV线、AVVR线、BV线、BVR线、RV线、RVS线、RVB线、RVVB线）SYV实芯聚乙烯绝缘聚氯乙烯护套射频同轴电缆 ：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。
煤矿用聚氯乙烯绝缘聚氯乙烯护套编织屏蔽控制软电缆MKVVRP-450/750(4～37)×(0.5～2.5)mm2。本安计算机电缆铜芯PVC绝缘铜芯PE绝缘铜芯XLPE绝缘。IA-DJVPVIA-DJYPVIA-DJYJPV本安型、编织分对屏蔽（铜丝或镀锡丝）。
BV线,聚氯乙烯安装线,屏蔽线执行标准:GB5023.等同于IEC60227）（等同IEC60331、.电缆（电线）长期允许工作温度应不超过70℃、90℃、105℃，敷设环境温度应不低于0℃。聚氯乙烯绝缘电缆（电线）聚氯乙烯电线用于额定电压450/750V及以下电气设备、仪器仪表、动力装置、照明线路及有屏蔽要求等布设线路连接用。
可在小雨或小雪天检查线路是否发热。7高温季节或高峰负荷时，重点检查设备发热情况。8负责供电系统操作、巡查、维修、养护的人员必须持证上岗，必须熟悉电气设备情况和有关安全措施。9配送电建立24小时运行值班制度，加强巡查，做好巡查记录；发现问题及时处理，并在值班记录及巡查记录中注明；不能解决的问题及时上报领导。10配电设备由专职人员负责管理和值班，配电设备的停送电由值班电工操作。11配电房室内的消防设施须定期检查，保持完好、有效，并有手持式气体灭火器。
HYA53：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装聚乙烯护套市内通信电缆HYAT53填充式铠电缆以上两种产品主要使用于城域网通信网络建设的复杂环境中，直埋于地下，有阻水、防鼠咬效果，无须充气保护，主要传输音频信号。
ZR-KVVP2铜芯绝缘和护套铜带屏蔽（阻燃）控制电缆。ZR-KVVRP2-22铜芯绝缘和护套铜带屏蔽钢带铠装（阻燃）控制电缆。电缆使用环境温度-40℃~+50℃，电缆敷设温度≥-10℃，在25℃时的温度≤95%，电缆敷设时弯曲半径：MHYV31、MHYVR型电缆≥10倍电缆外径其余型号电缆≥15倍电缆外径。
现代工业中，各类变频设备的节能效果十分明显，在大功率电机中采用变频调速电机，整个发电机组可节电30％。并且使用变频调速后，实现了电机的软启动，使电机工作平稳，电机轴承磨损减小，延长了电机使用寿命和维护周期。
例如：①煤矿用铜芯聚乙烯绝缘聚氯乙烯护套通信电缆，2芯1.5mm2(1/1.38)或7芯0.75mm2(7/0.37)，适用于固定场合使用和2对1.5mm2(48/0.2)，适用于移动场合使用，表示为：MHYV1x2x1.5(1/1.38)或MHYV1x7x0.75(7/0.37)或MHYV1x7x。