A Practical Guide to the Testing of Insulated Wires and Cables - Primary Source Edition PDF Download
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Author: Herbert Laws Webb
Publisher:
ISBN: 9781295263264
Category :
Languages : en
Pages : 148
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author: Herbert Laws Webb
Publisher:
ISBN: 9781295263264
Category :
Languages : en
Pages : 148
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author: Herbert Laws Webb
Publisher:
ISBN:
Category : Electric testing
Languages : en
Pages : 134
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Book Description
Author: Herbert Laws Webb
Publisher: Forgotten Books
ISBN: 9780282524609
Category : Technology & Engineering
Languages : en
Pages : 126
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Book Description
Excerpt from A Practical Guide to the Testing of Insulated Wires and Cables The main idea running through this little work is to present in clear and practical form the ordinary every-day work of the testing-room, in other words, the rudiments of wire and cable testing, with a view to furnishing to the workers in the great fields of telephony, telegraphy, elec tric lighting and electric railroading a concise guide to the manipulation of a set of testing instruments. It goes without saying that references have been occa sionally made to the standard work on this subject, Kempe's Handbook of Electrical Testing; and the same writer's Electrical Engineer's Pocket-book, has also, from time to time been referred to. The author's acknowledgments are due to Mr. E. H. Lyon for assistance in the preparation of the original diagrams, which materially help to explain the text. 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.
Author: Herbert Laws Webb
Publisher: Palala Press
ISBN: 9781358771477
Category :
Languages : en
Pages :
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Herbert Laws Webb
Publisher: Theclassics.Us
ISBN: 9781230256214
Category :
Languages : en
Pages : 24
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: ...cable-testing are scarcely applicable to every-day work, but should always be applied when testing cables at a factory for acceptance or rejection, as the various points enumerated above throw considerable light on the specific quality of the dielectric and its prospective durability. It is not to be imagined that an relaxation of careful methods is advocated in every-daj work, but it is not generally necessary in making periodical tests to take reversals or to take more than one minute's reading with the zinc current on each wire, except in the case of new cables or when a fault is suspected. CHAPTER XI. Test for Insulation.--(Continued.) To return to our specific example of the test for insulation resistance. The behavior of the spot should be carefully watched, and at the end of one minute from the time of turning on the current the exact deflection should be noted. This deflection serves for working out the insulation resistance by comparison with the galvanometer constant; the figures for insulation resistance are generally stated to be "after one minute's electrification." We will assume that the cable being tested is 2,640 feet long and that the deflection after one minute is 60 divisions on the scale. The constant of the galvanometer being 30,000, the absolute insulation resistance of the cable is-3 W9 = 500 megohms. As cables vary in length it is obviously useless, for purposes of comparison, to know the insulation resistance of a cable without also knowing its length, and even so it is not convenient to have to refer to two separate quantities; therefore it is usual to speak of the resistance per unit of length, and the insulation resistance per mile is the figure by which we can best judge of the actual condition of a...
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 368
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Author:
Publisher:
ISBN:
Category : Electric engineering
Languages : en
Pages : 680
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Author:
Publisher:
ISBN:
Category : Gas manufacture and works
Languages : en
Pages : 1054
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Author: Sir John Ambrose Fleming
Publisher:
ISBN:
Category : Electric engineering
Languages : en
Pages : 234
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Author: D. Van Nostrand Company
Publisher:
ISBN:
Category :
Languages : en
Pages : 96
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