隔爆型三相异步电动机技术条件 第7部分：YBGB3、YBGB3-W系列管道泵、户外管道泵用隔爆型三相异步电动机（机座号80～315）
Spectification of flameproof three phase asynchronous motor-Part 7:YBGB3 & YBGB3-W series of flameproof three phase asynchronous motor for indoor & outdoor pipe-pump (frame size 80 to 315)