Archive | September, 2011

26 September 2011 ~ 3 Comments

Level of illuminance for industrial lighting

The amount of light required for any of these industrial applications will depend upon the nature of the work carried out. The luminescence required for manufacturing operations is given in table below. The size of lamp required can be calculated by considering the area to be lighted, the illuminance required,depreciation factor, and the beam factor of the particular [...]

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25 September 2011 ~ 2 Comments

Direct Current (D.C) motor field windings

D.C motor is the one of common application for industrial.It have several advantage compare with A.C motor.Dc motors applied for the momentarily deliver rated around three or more times from their torque. It also include with dynamic braking function  or regenerative braking to obtained with dc motors for quick stops application.This function can avoid for [...]

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05 September 2011 ~ 3 Comments

Types of excitation system

On my last post,i already discuss about excitation system for generator.I explain generally about basic operation and application for excitation system. For more detail about this topic,i want share some information about several types of excitation system that commonly used for generator. I hope with it can bring up some guide line and basic knowledge [...]

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03 September 2011 ~ 6 Comments

Generator exitation

What is the excitation?The main purpose of excitation system for generator is to supply the power source to the rotor field coil.Excitation system produce the field current and it controlled by the automatic voltage regulator (AVR).I already discuss about automatic voltage regulator on my last post. This field current controller is important to ensure the [...]

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