You appear to be mis-interpretting the 30 HP application....
Per the filing....they are not testing for 30HP as you state...
They are utlizing a 30 HP electric motor for simulating loads that a constant velocity joint would be exposed to by a 30 HP electric motor utilizing approximately 750 ft. lbs. at 300 RPM in a 25 ton mining vehicle.
They are recreating the loads on the CVJ as they would exist in the 25 ton mining vehicle...