... outstanding performance of starting 2, operation, low noise 3, high structure 4 , light weight, easy maintenance YC Series Heavy-Duty Single-phase ... low noise, sight vibration, light weight and simple construction.This series motors can be used on air compressor, pumps, refrigeration, ... Eff (%)Power factorRated torque(N*M)HPkWYC711-2 0.182201.92800600.723YC712-2 0.252202.42800640.743YC711-4 0.122201. ...