Aug 28, 2006 · Wk2 is a particular “simplified” constant for moment of inertia. It has “weight” instead of “mass” and it is used on the expression: t = Wk2 (rpmf - rpmi)/ (308*Tavg)] t = accelerating time in …

Oct 23, 2008 · t = WK2 x rpm 308 x T av. WK 2 = inertia in lb.ft. 2 t = accelerating time in sec. T = Av. accelerating torque lb.ft.. T = WK 2 x rpm 308 x t When you say the current is higher than LRC, …

Feb 14, 2023 · The distinction between these two inertia equations, WR2 and WK2, is important because in AC induction motor applications, inertia is used to determine the motor torque required to …

Jan 10, 2007 · Please can you point me to information on how to estimate the inertia of a motor from its power, speed, etc, and to tables of data for the same? Thanks

Jun 9, 2005 · Trying to figure out the minimum HP required to accelerate a fan (blower) wheel. Nema publishes the Load Wk^2 values for motors at different RPM/HP. I have modelled the fan wheels in …

Feb 28, 2013 · I found a couple old threads on this topic: thread820-140933 thread407-23283 Neither seemed to answer the question regarding what GD2 vs. WR2 mean. The best answer I have found is …

Apr 17, 2003 · Hello All I have bit of a problem I have two torque speed curves, one showing the motor torque the other load torque. But I need to find the Acceleration time; I have the true torque values …

Oct 20, 2009 · How would you suggest finding a J or WK2 value from a freq vs. time chart? You know the angular acceleration. You could assume the output power of the prime mover at the time of the …

Sep 29, 2013 · For applications like these, the load inertia (referred to as WK2) must also be considered. These inertia loads invariably use more power to start and accelerate to running speed, than they do …

Oct 30, 2003 · Does anyone have a source that will help me find a drawing and data for the following? If so, I would appreciate your help. MOTOR INFO: GE 1000 HP 1185 RPM 8309S Frame 2300 Volts …