屏南BP-YJVP4X4平方电缆酣春

屏南BP-YJVP4X4平方电缆酣春

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 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 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.
　　2、经济效益低下全行业亏损企业700多家，亏损面达1/4强，行业的销售收入利税率1991年为11.7%，1995年下降为5%。由于效益连年下降，亏损企业增多，行业内资金普遍紧张，资产负债率平均高达70%。

　　 五、规格范围型 号线 芯 对 数标 称 截 面（mm2） DJYPV DJYP2V DJYP3V DJYPVR DJYP2VR DJYP3VR DJYVPDJYVP2DJYVP3DJYVPRDJYVP2RDJYVP3RDJYPVPDJYP2VP2DJYP3VP3DJ。

　　电子计算机用屏蔽电缆，选用介电常数小的高压聚乙烯作绝缘。型号/名称/性能型号电缆名称敷设方式DJYPV铜芯聚乙烯绝缘，对绞铜丝编织屏蔽，聚氯乙烯护套电子计算机电缆1、固定敷设在室内、电缆沟或管道内。



　　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。

两端接地屏蔽效果更好，但信号失真会增大。请注意：两层屏蔽应是相互绝缘隔离型屏蔽。如没有彼此绝缘仍应视为单层屏蔽。外层屏蔽两端接地是由于引入的电位差而感应出电流，因此产生降低源磁场强度的磁通，从而基本上抵消掉没有外屏蔽层时所感应的电压；而内层屏蔽一端接地，由于没有电位差，仅用于一般防静电感应。下面的规范就是佐证：《GB50217-1994电力工程电缆设计规范》——3.6.8控制电缆金属屏蔽的接地方式，应符合下列规定：计算机监控系统的模拟信号回路控制电缆屏蔽层，不得构成两点或多点接地，宜用集中式一点接地。

　　6：产品性能和参数：导体结构：由7/1.04mm软铜线绞合而成绝缘：绝缘采用交联聚乙烯，绝缘厚度1.0mm，绝缘电阻可以保证在10000MΩ/km以上。护套：绝缘采用低密度聚乙烯黑色护套，护套厚度1.8mm,从而保证了电缆优良的绝缘性能，防水性能和防老化性能。

　　火灾中矿用电缆的主要特性有火灾温度一般在600℃～8000℃，在火灾情况下，导线电缆会很快失去绝缘能力，进而引发短路等次生电气事故，造成更大的损失；导线电缆在规定的允许载流量下有较大的过载能力；短路状态下，导线电缆会在瞬间引起绝缘材料熔化、燃烧，并引燃周围可燃物。
　　SYV75－5＋SYV75－4＋SYV75－3＋RV2、生产标准：国家标准、企业标准3、说明：导体使用单支或多支裸铜绞合实芯聚乙烯或PVC绝缘外包铝箔屏蔽软裸铜线编织屏蔽软聚氯乙烯护套长期允许工作温度不超过70℃组合电缆=屏蔽控制电缆+电源线+信号电缆+同轴电缆|复合电缆；如；SYV75-5+RVV。

　　产品描述导体：多股镀锡软铜导体，直径7×0.16mm绝缘：实芯聚烯烃，HDPE线对：四对，色谱为：蓝/蓝白、橙/橙白、绿/绿白、棕/棕白缆芯：四芯绞合屏蔽结构：铝箔，聚脂带，排流线护套：阻燃PVC或低烟无卤外径5.3mm超五类4对非屏蔽水平对绞数据电缆是为支持高速网络传输而设计的，符合中华人民共和国。



　　带钢丝绳PVC弹性体行车控制电缆，行车控制电缆，带钢丝绳电缆-带钢丝绳的电缆，电动葫芦电缆，电动葫芦专用电缆，带钢丝绳的行车控制电缆，带钢丝的行车控制电缆，行车电缆，行车手柄线，天车手柄线，电动葫芦手柄线）型号KVVRC带钢丝绳PVC弹性体行车控制电缆具有柔软、耐磨、防油等特性，线旁附钢丝绳，增强抗。

　　 HYAP屏蔽通信电缆屏蔽通信电缆型号；高频电缆HYAPHYAPHYVPHYVPZRHYVP屏蔽通信电缆执行标准：YD/T屏蔽通信电缆结构特点：HYAP型市内通信电缆采用全色谱绝缘，铝塑综合护套(即电缆的纵包屏蔽铝带与护套粘结成一体，形成密封护层)，具有电气性能优越，施工方便的特点。

但限于条件，其时两线制仅在压力、差压变送器上选用，温度变送器等仍选用四线制。如今国内两线制变送器的商品规模也大大拓展了，运用领域也越来越多。一起从国外进来的变送器也是两线制的居多。不同线制变送器的差异两线制因为要完成两线制变送器有必要满足以下条件:V≤Emin-ImaxRLmax变送器的输出端电压V等于规则的低电源电压减去电流在负载电阻和传输导线电阻上的压降。I≤Imin变送器的正常作业电流I有必要小于或等于变送器的输出电流。

　　RVVP详系介召绝缘：PVC，全色谱识别缆芯：绝缘芯线绞合成缆，绕包聚酯薄膜带（PP带）护套：黑色/白色PVC标准：JB8734.5-1998用途：应用于楼宇自动化控制系统、防盗报警系统、消防系统、三表自抄系统、通信、音频、音响系统、仪表、电子设备及自动化装置等需防干扰线路的连接。

Correction factor 1.12 1.06 1.00 0.94 0.87 0.79