Electrical news and engineering . the city. This is alsosaid to be the rinly carriage of its kind in Canada, and isvery useful for handling the heavy reels. This cable was supplied and is being in-t,illed by liriti-h Insulated Company, Limited, Montreal. Weston Power-Factor Meters The practice of adjusting power-factur by means ofover-excited synchronous machines is now used on manyimportant systems, and wherever such regulation is under-taken it is necessary to have some means of measuring thepower-factor. Since power-factor regulation is made prim-arily to save money by utiliz
Electrical news and engineering . the city. This is alsosaid to be the rinly carriage of its kind in Canada, and isvery useful for handling the heavy reels. This cable was supplied and is being in-t,illed by liriti-h Insulated Company, Limited, Montreal. Weston Power-Factor Meters The practice of adjusting power-factur by means ofover-excited synchronous machines is now used on manyimportant systems, and wherever such regulation is under-taken it is necessary to have some means of measuring thepower-factor. Since power-factor regulation is made prim-arily to save money by utilizing all apparatus and circuits to things to occupy the same space simultaneously is com-plied with in a most ingenious way. The coils are woundat the same time by a special machine and interlaced layerby layer at diametral crossing points. At these crossingpoints the windings are spread sufficiently to allow the in-sertion of the staff. Small curved plates cemented to theinside periphery of the coils and provided with holes that. Fig. 1—Power-Factor MeterMovement. Line Load Pig. 2—Circuit Diagram Single-Phase Power-Factor Meter. their lullest extent, accuracy of the power-factor meter isof great economic importance. The Weston Electrical Instrument Company has re-cently placed on the market a new form of power-factormeter, which constitutes a considerable advance in the is of the electrodynamometer type, but its mechanicalconstruction is new in every detail. The general construc-tion is quite similar to that of the new Weston switchboardwattmeter, recently described in these columns. This new instrument consists essentially of two coilsmounted at right angles to each other on the same staffand situated in the field produced by a fixed coil, Fig. movable system has no spring control, but is perfectlyfree to rotate. One movable coil is connected across thecircuit; the fixed coil is connected in series with the samecircuit, while the second movable coil is connect
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