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苏联在1969—1975年发展了新标准“4A”电动机系列,并于1980年开始成批生产。现将“4A”系列的主要数据加以说明和汇编。1.中心高和额定功率、定子内外径和铁心长度的对应关系全系列中心高包括 H50～355毫米。定子冲片外径 D_α/定子冲片内径 D 之比较大,在中心高 H160～280机座范围内,D_α之值 IP44和IP23相同,H315和 H355机座则不相同,其值如下:
The Soviet Union developed the new standard “4A” motor series from 1969 to 1975 and started mass production in 1980. Now “4A” series of key data to be described and compiled. 1. The center of the high and rated power, the stator diameter and core length of the corresponding relationship between the full range of centers, including H50 ~ 355 mm. The outer diameter of the stator punching sheet D / α is larger than the inner diameter D of the stator punching sheet. The values of D_α are the same in the height of H160 ~ 280 in the center, IP44 and IP23, but the values of H315 and H355 are different.