0 About this Manual0.8 Units of measurementDS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 90.8 Units of measurementEvery physical dimension included in this manual uses international metricsystem units, otherwise known as SI (Système International d’Unités) units.For the purpose of the equipment’s UL certification, some of thesedimensions are accompanied by their equivalents in imperial units.Table 1: Unit conversion examplesDesignation US-AmericandesignationImperial unit SI value Conversion valueLength inch 1 in (’’) 25.4 mm 0.0394Power horsepower 1 HP = 1.014 PS 0.7457 kW 1.341Moment of torque pound-force inches 1 lbf in 0.113 Nm 8.851Temperature Fahrenheit 1 °F (T F ) -17.222 °C (T C) TF = T C × 9/5 + 32Rotational speed Revolutions per minute 1 rpm 1 min -1 1Weight pound 1 lb 0.4536 kg 2.205Flow rate cubic feed per minute 1 cfm 1.698 m 3/min 0.5889
