IEC 60034-2 SUPPLEMENT A
Rotating electrical machines Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles) Measurement of losses by the calorimetric method
|Publication Date:||1 January 1974|
|ICS Code (Rotating machinery in general):||29.160.01|
|ICS Code (Rotating machinery):||29.160|
The calorimetric method can be used to determine the efficiency of electrical rotating machinery:
- either by the determination of the total losses on load,
- or by the determination of the segregated losses and hence the conventional total loss by summation of the segregated losses.
Depending upon the circumstances, calorimetric measurements may be made in two different ways:
- either by measuring the quantity and rise in temperature of the cooling medium (direct method),
- or by calibration of the rise in temperature of the cooling medium.
The calorimetric measurements should be performed for each cooling circuit, either primary or secondary, separately.
The methods of loss determination given in this recommendation have been devised mainly for large generators, but the principles used can also be applied to other machines.