Variation from Rated Frequency:
Alternating - current motors shall operate successfully under running conditions at rated load and at rated voltage with a variation in the frequency up to 5 percent above or below the rated frequency. Performance within this frequency variation will not...
I thought that I would share a site that has documentation on topics such as:
- Electrical Manuals
- Automation Manuals
- Mechanical Manuals
Just in case you need infomation on a disign or build.
http://www.maintenancegeeks.com