Zl^ 



Table 473. 

 ENERGY LOSSES IN TRANSFORMER STEELS. 



Determined by the wattmeter method. 



Loss per cycle per cc = AB'^-\-l»iBv, where /9^flux density in gausses and « = frequency in 



cycles |)er second, x shows the variation of hysteresis with B between 5000 and loooo gausses, 



and y the same for eddy currents. 



• German. t English. 



X In order to mske a fair comparison, the eddy current loss has been computed for a thickness of 0.0357 C">- (Gage 

 No. 29), assuming the loss proportional to the thickness. 



Lloyd and Fisher, Bull. Bur. Standards, 5, p>. 453; 1909. 



Note. — For formula and tables for tlie calculatloa of mutual and self inductance see Bulletin Buieau 

 of Standards, vol. 8, p. 1-237, 1912. 



6iiiTHSONiAN Tables. 



