简要说明：天联牌的3*2.5电源线产品：估价：12，规格：3*2.5电源线，产品系列编号：齐全

　　

Tianjin Cable General Factory first branch factory, founded in 1971, the enterprise has more than 300 workers, engineering and technical personnel more than 30 people, the factory covers an area of 2000 square meters, with 15000000 yuan in fixed assets, enterprises have the production and testing equipment more than 120 Taiwan (number of pieces), the annual output value of 150000000 yuan. Over the years, I plant products used in the dozens of coal industry group and mines, gained high praise and evaluation. Enterprises with "integrity-based, customer first, quality first" for the purpose, passion to serve customers and the public are welcome to propose more guidance to the products of our factory, and seek common development.RVV2*1.5      额定电压             额定电压是电缆设计和电性能试验用的基准电压。             额定电压用U0、U表示，单位为V。             U0--任一绝缘导体和""地""(电缆的金属护层或周围介质)之间的电压有效值。             U--多芯电缆或单芯电缆系统任何两相导体之间的电压有效值，  RVV2*1.5      当用于交流系统时，电缆的额定电压应至少等于所使用电缆系统的标称电压。该条件均适用于U0和U值。             当用于直流系统时，该系统的标称电压应不大于电缆额定电压的1．5倍。             注：系统的工作电压允许长时间地超过该系统标称电压的10%。如果电缆的额定电压至少等于该系统的标称电压，则电缆可在高于额定 电压10%的工作电压下使用。