Step type feeder voltage regulators

Discussion and author´s closure of a paper by L H. Hill published in the February 1935 issue, pages 154–8, and presented for oral discussion at the distribution and transmission session of the South West District meeting, Oklahoma City, Okla., April 26, 1935. F. L. Snyder (Westinghouse Elec. and Mfg. Co., Sharon, Pa.): As pointed out by the author the development of the step type voltage regulator was the natural result of the experience of both manufacturers and operators with load tap changers on power transformers. As a matter of fact, there is nothing new about the theory of a step type regulator. Several manufacturers of electrical machinery have been building step type regulators for the past 10 years and there are several million kva of installed capacity of such equipment. Step type regulators of the type which manufacturers have been building for some time have, however, been too expensive for application to distribution circuits and the step voltage regulator of the general type described in this paper consists of a smaller and less expensive regulator which can be economically justified on distribution circuits. Apparatus of the same general type as that described is being built by several other manufacturers. (See “Step Voltage Regulators,” F. L. Snyder, Electric Journal, June 1934).