Papers On Current Transformers Classic Reprint
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Papers On Current Transformers Classic Reprint
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Author : H. W. Price
language : en
Publisher: Forgotten Books
Release Date : 2017-12-21
Papers On Current Transformers Classic Reprint written by H. W. Price and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-21 with Technology & Engineering categories.
Excerpt from Papers on Current Transformers The general transformer theory is usually explained by the aid of the vector diagram shown in Fig. 1 in which. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Design Of Alternate Current Transformers Classic Reprint
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Author : Robert Willsher Weekes
language : en
Publisher: Forgotten Books
Release Date : 2018-03-08
The Design Of Alternate Current Transformers Classic Reprint written by Robert Willsher Weekes and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-08 with Technology & Engineering categories.
Excerpt from The Design of Alternate-Current Transformers The invention of the alternate-current transformer some years ago led to the introduction of the system of high-tension distribution of electric energy for lighting purposes. The saving in the first cost of the copper mains being the chief advantage of the system in the eyes of the promoters, the question of the efficiency of this method of supply, except at full load, was not considered. Now, experience has shown that the cost of the annual supply depends largely on the. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Method For Testing Current Transformers Classic Reprint
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Author : FRANCIS B. SILSBEE
language : en
Publisher:
Release Date : 2022
Method For Testing Current Transformers Classic Reprint written by FRANCIS B. SILSBEE and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Equipment For Testing Current Transformers Classic Reprint
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Author : Francis B. Silsbee
language : en
Publisher: Forgotten Books
Release Date : 2017-10-27
Equipment For Testing Current Transformers Classic Reprint written by Francis B. Silsbee and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-27 with Technology & Engineering categories.
Excerpt from Equipment for Testing Current Transformers The equipment and methods used for this purpose at the Bureau of Standards at Washington have been modified and enlarged from time to time to keep pace with the increasing demands in accuracy and range of the transformers to be tested. The object of this paper is to describe the equipment and methods 1 now in use at this Bureau in the hope that the data given may be of assistance to other labora tory workers who may wish to install apparatus for similar work. The accuracy needed in this class of testing should, if possible, be so high that errors in the certified values will be negligibly small in comparison with the inaccuracy likely to occur in the next step in the measurement process; that is, in the comparison in the field between the standard transformer and the working transformer. A limit to the possible accuracy is, of course, set by the repeatability of the transformer under test. This limit is influenced by a number of factors, among which are changes in the magnetic condition of the core as a result of previous operation, uncertainties in the temperature of the transformer windings and hence in their resistance, and uncer tainty in the exactness with which the burden used in the field is duplicated in the test. In the case of hole-type current transformers additional uncertainty arises because of differences in the position of [the primary conductor in the hole, and in the position of the return lead. The magnitude of the changes in calibration resulting from these effects depends greatly upon the type of transformer, but may amount to several tenths of 1 percent. The sensitivity of the present equipment is such that a change of percent in ratio and minute in phase angle is definitely detectable even at a secondary current as small as ampere. Changes in the performance of the transformer under test are there fore often noted. The accuracy of the equipment, since it involves the calibration of resistance standards of widely different values with the additional liability to errors from skin effect and residual self - induct ance, is, perhaps, not as high as the precision mentioned above would indicate. The accuracy limits printed on the Bureau's certificate form (viz, percent in ratio and 3 minutes in phase angle) are, however, certainly very conservative. In reducing the observed values all corrections are normally carried to the nearest percent and minute and the resulting values are then rounded off in the certificate to the nearest percent and 1 minute. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Alternating Current Transformer Classic Reprint
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Author : Frank George Baum
language : en
Publisher:
Release Date : 2015-06-29
The Alternating Current Transformer Classic Reprint written by Frank George Baum and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-29 with Technology & Engineering categories.
Excerpt from The Alternating Current Transformer The following pages originated from a course of University lectures. It is hoped that the book will be of use to the engineer and general reader. Some knowledge of elementary alternating currents is presupposed. I have found that the student who grasps the theory of the transformer has little difficulty with the more complicated actions and reactions taking place in the induction motor, and is also helped in his study of synchronous apparatus. Chapters I and II are merely introductory. Chapters III to V, carefully studied, should give the reader a thorough knowledge of the transformer. The tests in Chapter VI should be carried out by the student on a few commercial types. The method of design in Chapter VII is offered as a probable improvement over that usually given in text books. I wish to thank the manufacturers for the loan of cuts used in Chapter X. Thanks are also due the publishers who have maintained their reputation for sparing no effort or expense to make the book mechanically as perfect as possible. I am indebted to Mr. A. S. Kalenborn for reading proofs. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Alternate Current Transformer In Theory And Practice Vol 2 Classic Reprint
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Author : John A. Fleming
language : en
Publisher: Forgotten Books
Release Date : 2018-01-31
The Alternate Current Transformer In Theory And Practice Vol 2 Classic Reprint written by John A. Fleming and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-31 with Technology & Engineering categories.
Excerpt from The Alternate Current Transformer in Theory and Practice, Vol. 2 Induction Apparatus; Callan' s electra-magnetic Repeater. 4, Sturgeon's Induction Coil Sturgeon's Second Induction Coil. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Determination Of Current Ratio And Phase Angle Of Current Transformers
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Author : Abraham S. Benjamin
language : en
Publisher: Forgotten Books
Release Date : 2018-10-10
Determination Of Current Ratio And Phase Angle Of Current Transformers written by Abraham S. Benjamin and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-10 with Technology & Engineering categories.
Excerpt from Determination of Current Ratio and Phase Angle of Current Transformers: A Thesis A general outline of the method may be understood from Fig.la. Two non-inductive shunts P and S are connected in the primary and secondary circuits respectively. The drops over these resistances are utilized to send current through the differential coils of the galvanometer G. The construction of this coil will be explained later. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Alternate Current Transformer In Theory And Practice Vol 2
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Author : John Ambrose Fleming
language : en
Publisher: Forgotten Books
Release Date : 2017-07-17
The Alternate Current Transformer In Theory And Practice Vol 2 written by John Ambrose Fleming and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-17 with Technology & Engineering categories.
Excerpt from The Alternate Current Transformer in Theory and Practice, Vol. 2: The Utilization of Induced Currents The superiments (sampson's Annals, Vol. I., p. This was published in October, 1836. W. Sturgeon did not appear at this time to have been acquainted with Faraday's Ninth series of Electrical Researches; but after repeating mostof Henry's experiments, and adding some of his own, he arrived at the conclusion that the action of the spiral conductor in creating a shock was due to the collapse of the magnetic lines of force. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Alternate Current Transformer In Theory And Practice Vol 1
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Author : John Ambrose Fleming
language : en
Publisher: Forgotten Books
Release Date : 2017-12-23
The Alternate Current Transformer In Theory And Practice Vol 1 written by John Ambrose Fleming and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-23 with Technology & Engineering categories.
Excerpt from The Alternate Current Transformer in Theory and Practice, Vol. 1: The Induction of Electric Currents For others, content to possess themselves of a more elementary knowledge of the chief phenomena of electro-magnetic induction, the following pages may serve as a guide. Some portions of the book have already appeared as contributions to the electrician, but these have been extended and carefully revised before being again here presented to the reader. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
The Determination Of The Constants Of Instrument Transformers Classic Reprint
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Author : P. G. Agnew
language : en
Publisher: Forgotten Books
Release Date : 2016-10-13
The Determination Of The Constants Of Instrument Transformers Classic Reprint written by P. G. Agnew and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-13 with Technology & Engineering categories.
Excerpt from The Determination of the Constants of Instrument Transformers The determination of the ratio and phase angle of instrument transformers is an important problem, and one in which consider able precision is required for technical work. The principle of the method here described is the same for both current and potential transformers, being an application of the potentiometer method. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.