02-05-2017, 08:09 PM
i would like to download electrical machine design book by nagoorkani
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electrical machine design by nagoor kani free download
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i would like to download electrical machine design book by nagoorkani
03-05-2017, 11:32 AM
Introduction of the electric machine design:
Electrical materials used in the construction of all commercial machines can be broadly classified into three groups,
(I) Perform
(Ii) Insulation
(Iii) Magnetic material.
The design of machines and electrical equipment depends mainly on the quality of these materials. Low grade materials result in bulky and expensive equipment in general.
Conductive material:
The conductive materials used are copper and aluminum. The insulating materials used are cotton, silk, wood, rubber mica paper, asbestos, polyethylene, pvc, bakelite, etc. These materials are classified according to their ability to withstand temperature. Magnetic materials used as silicon steel and nickel-iron alloys. The following grades of silicon steel are mainly used in various electrical machines:
E11, E12, E21, E31, E41, E42, E43, E310, E320, E330
In the foregoing E they represent electrical grade silicon steel. The first figure indicates the percentage of silicon in the steel.
1. Low percentage.
2. Average percentage.
3. Above average percentage.
4. High percentage.
The second figure indicates the specific losses in the steel at 50 Hz
1. Normal.
2. Average.
3. Low.
In the third figure 0 means that the steel is cold rolled grain oriented.
Electrical materials used in the construction of all commercial machines can be broadly classified into three groups,
(I) Perform
(Ii) Insulation
(Iii) Magnetic material.
The design of machines and electrical equipment depends mainly on the quality of these materials. Low grade materials result in bulky and expensive equipment in general.
Conductive material:
The conductive materials used are copper and aluminum. The insulating materials used are cotton, silk, wood, rubber mica paper, asbestos, polyethylene, pvc, bakelite, etc. These materials are classified according to their ability to withstand temperature. Magnetic materials used as silicon steel and nickel-iron alloys. The following grades of silicon steel are mainly used in various electrical machines:
E11, E12, E21, E31, E41, E42, E43, E310, E320, E330
In the foregoing E they represent electrical grade silicon steel. The first figure indicates the percentage of silicon in the steel.
1. Low percentage.
2. Average percentage.
3. Above average percentage.
4. High percentage.
The second figure indicates the specific losses in the steel at 50 Hz
1. Normal.
2. Average.
3. Low.
In the third figure 0 means that the steel is cold rolled grain oriented.
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