This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ...and the static charge of the cables, an effect which has to be allowed for at the generating station. A full account of the theory and experimental investigation of this phenomenon will be found in Dr. Fleming's Alternate Current Transformer, vol. ii. A word should here be said concerning the fuses to be used on ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ...and the static charge of the cables, an effect which has to be allowed for at the generating station. A full account of the theory and experimental investigation of this phenomenon will be found in Dr. Fleming's Alternate Current Transformer, vol. ii. A word should here be said concerning the fuses to be used on hightension circuits. It has been stated elsewhere that the fuse break should not be less than one inch for every 100 volts, and this length should be increased for very large currents. This rule gives a great length of fuse for high-tension work, and ingenuity has been brought to bear upon designing a fuse of shorter length with some means of extinguishing the arc. A design of Ferranti is most effective, the fuse being only about two inches in length, consisting of several strands of No. 30 copper wire. An earthenware vessel is used, divided by a diaphragm into two troughs, which are filled with thick resin oil. The ends of the fuse terminate in two rings, which are slipped over the ends of two spring rods, one in each trough, which keep it in tension over the diaphragm. These rods are connected to brass blocks, which pass through the earthenware and form contact pieces with the main terminals. In the event of a fuse melting, the spring rods plunge into the oil and extinguish the arc. An important safety Regulation issued by the Board of Trade is as follows (Regulation 12): "In every case where a high pressure supply is transformed for the purpose of supply to one or more consumers, some suitable automatic and quick-acting means shall be provided to protect the consumer's wires from any accidental contact with, or leakage from, the high pressure system, either within or without the transforming apparatus." The sole point of danger in a ca...
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Add this copy of Chemical Technology, Or, Chemistry in Its Applications to cart. $56.58, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2012 by Nabu Press.
