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Monthly Archive for: «November, 2013»

Electrical Thumb Rules You MUST Follow (6)

Continued from: Electrical Thumb Rules You MUST Follow (Part 5) Transformer earthing wire / Strip size Motor earthing wire / Strip size Panel earthing wire / Strip size Electrical equipment earthing Earthing wire (As per BS… Read more

Nov 29, 2013 | jiguparmar

Electrical Thumb Rules You MUST Follow, Part 6

General principles of electricity supply systems

The generation of electricity in most modern power stations is at 25 kV, and this voltage is then transformed to 400 kV for transmission. Virtually all the generators of electricity throughout the world are three-phase… Read more

Nov 25, 2013 | Edvard

Suspension towers (on photo: Powerline shot by David Lowe via Flickr)

Electrical Thumb Rules You MUST Follow (5)

Continued from: Electrical Thumb Rules You MUST Follow (Part 4) Standard Size of Transformer (IEEE/ANSI 57.120) Standard Size of Motor (HP) Approximate RPM of Motor Motor Line Voltage Motor Starting Current Motor Starter Impedance of… Read more

Nov 20, 2013 | jiguparmar

Electrical Thumb Rules You MUST Follow, part 5

Identity Card of Every Asynchronous Motor

A motor is characterized by different electrical and constructional parameters which identify its correct application field. The whole of all these parameters constitutes the rating of the machine and is reported on a nameplate positioned… Read more

Nov 18, 2013 | Edvard

Identity Card of Every Asynchronous Motor

Electrical Thumb Rules You MUST Follow (4)

Continued from: Electrical Thumb Rules You MUST Follow (Part 3) Substation Capacity and Short Circuit Current Capacity (As per GERC) Substation Capacity and Short Circuit Current Capacity (As per Central Electricity Authority) Minimum Ground Clearance… Read more

Nov 15, 2013 | jiguparmar

Electrical Thumb Rules You MUST Follow - part 4

4 motor designs identified in NEMA MG1

Performance requirements for various types of induction motors for use on standard sinewave power supplies are identified in NEMA MG1. Some of these types of motors are suitable for use in variable speed applications, dependent… Read more

Nov 01, 2013 | Edvard

4 motor designs identified in NEMA MG1


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