For the three phase machines the tolerance is +/- 10% for fixed voltage range and +/- 5% for regular voltage range
The single phase machines are designed with a +/- 5% tolerance. If only 90% of the maximum allowed pressure will be used for continuous operation then the allowed voltage range adds up to +/- 10%.
The frequency tolerances is maximum +/- 2%.
For the three phase machines the tolerance is +/- 10% for fixed voltage range and +/- 5% for regular voltage range
The single phase machines are designed with a +/- 5% tolerance. If only 90% of the maximum allowed pressure will be used for continuous operation then the allowed voltage range adds up to +/- 10%.
The frequency tolerances is maximum +/- 2%.