The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers book
The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers book
The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers.cCarl Kinzbrunner
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Author: Carl Kinzbrunner
Page Count: 34 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Type: PDF
ISBN: 9781130200072
File size: 48 Mb
File Name: The.Testing.of.Alternating.Current.Machines.in.Laboratories.and.Test-Rooms.Volume.1;.A.Practical.Work.for.Students.and.Engineers.pdf
Download Link: The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers
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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. 1907 Excerpt: ...for switching in parallel is exactly the same here as with the previous arrangements. Fig. 86.--Connections of Synchronizing Transformers and Lamps. The connections of synchronizing lamps for three-phase current are similar to those for single-phase current. For low voltages three lamps may be connected between the terminals AA', BB', and CC (see Fig. 87). If all three lamps become simultaneously dark or bright, then the connections are all right, and at an instant of darkness the switch may be closed. It might, however, happen that on starting the machines, or after any alteration on the machine or switchboard, the lamps do not become bright or dark simultaneously, but one after the other. This is a sign that the succession of the cables on the terminals of the one machine does not correspond with the succession of the cables on the terminals of the other machine. In this case, any two of the cables may be changed. For instance, the cable which was previously connected with the switch terminal A' might now be connected with B', and that of B' with A'. Still, in another way we can assure ourselves before starting that the cables of the two machines are correspondingly connected with the switch, viz. by switching a three-phase motor first on the terminals A, B, and C, and then in exactly the same way on A', B', C (that terminal of the motor which was on A before now to be connected with A', B before with B' now). If the direction of rotation of the motor is the same in the second case as it was in the first, the connections are all right; if the direction of rotation is opposite, then two of these cables must be changed as before. Fig. 87.--Connections of Synchronizing Lamps in a Three-phase Circuit. About the proper connections of the two machines we have t...
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The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers.cCarl Kinzbrunner
Author: Carl Kinzbrunner
Page Count: 34 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Type: PDF
ISBN: 9781130200072
File size: 48 Mb
File Name: The.Testing.of.Alternating.Current.Machines.in.Laboratories.and.Test-Rooms.Volume.1;.A.Practical.Work.for.Students.and.Engineers.pdf
Download Link: The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers
---------------------------------------------------------------
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. 1907 Excerpt: ...for switching in parallel is exactly the same here as with the previous arrangements. Fig. 86.--Connections of Synchronizing Transformers and Lamps. The connections of synchronizing lamps for three-phase current are similar to those for single-phase current. For low voltages three lamps may be connected between the terminals AA', BB', and CC (see Fig. 87). If all three lamps become simultaneously dark or bright, then the connections are all right, and at an instant of darkness the switch may be closed. It might, however, happen that on starting the machines, or after any alteration on the machine or switchboard, the lamps do not become bright or dark simultaneously, but one after the other. This is a sign that the succession of the cables on the terminals of the one machine does not correspond with the succession of the cables on the terminals of the other machine. In this case, any two of the cables may be changed. For instance, the cable which was previously connected with the switch terminal A' might now be connected with B', and that of B' with A'. Still, in another way we can assure ourselves before starting that the cables of the two machines are correspondingly connected with the switch, viz. by switching a three-phase motor first on the terminals A, B, and C, and then in exactly the same way on A', B', C (that terminal of the motor which was on A before now to be connected with A', B before with B' now). If the direction of rotation of the motor is the same in the second case as it was in the first, the connections are all right; if the direction of rotation is opposite, then two of these cables must be changed as before. Fig. 87.--Connections of Synchronizing Lamps in a Three-phase Circuit. About the proper connections of the two machines we have t...
Read online The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers Buy and read online The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers Download The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook The Testing of Alternating Current Machines in Laboratories and Test-Rooms Volume 1; A Practical Work for Students and Engineers
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