Characteristics of substation loads at the various anthracite collieries of the Lackawanna R. R. Co.

The paper deals with a series of tests made on substations which supply power for driving d-c. machinery at the anthracite mines of the Lackawanna R. R. Company. A description is given of the substations and motor equipments on apparatus in the mines. The instruments used and methods employed in conducting the tests are outlined. The results of the tests are given in the form of a set of curves showing load factors, diversity factors, peaks, and characteristic load curves. The effect of the load factors and peaks on the size and type of apparatus in the substation is discussed and suggestions are made for substations to meet special conditions.