Calorimeter measurement of stray-load losses

THIS paper covers several thermal or calorimeter tests which were made at the Queenston generating station of the Hydro-Electric Power Commission of Ontario, on a 55,000-kva. generator having an enclosed system of ventilation. The objects of the tests were to determine stray-load losses on short circuits and under rated load, and to obtain some information regarding the accuracy of this method of test. Descriptions are given covering the general method followed and the actual tests as made. For those who might wish to check the calculations in detail the actual figures are given in an appendix.