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1.低压电器产品需求的基本特点 低压电器的用户主要是电力工业,此外还有石化、煤炭、冶金、建筑业以及民用等,低压电器生产厂家的产品绝大多数由低压成套设备厂家所购买,然后组装成配电屏、动力配电箱、保护屏、控制屏等低压成套装置再卖给用户。其特点为: (1) 量大面广,可以说国民经济各行各业都离不开低压电器。人们的日常生活,也离不开低压电器。 (2) 品种规格多(电压、电流、保护、极数),环境条件复杂(海拔、温
1. The basic characteristics of low-voltage electrical product demand The main users of low-voltage electrical appliances are the power industry, in addition to petrochemical, coal, metallurgy, construction, and civil use. The vast majority of the products of low-voltage electrical equipment manufacturers are purchased by low-voltage complete equipment manufacturers. Then it is assembled into low-voltage complete devices such as power distribution panels, power distribution boxes, protection screens, and control screens, and then sold to users. Its characteristics are as follows: (1) The quantity is so wide that it can be said that all industries and industries in the national economy are inseparable from low-voltage electrical appliances. People’s daily life is also inseparable from low-voltage electrical appliances. (2) Variety of specifications (voltage, current, protection, number of poles), complex environmental conditions (elevation, temperature)