20 August 2011 ~ 3 Comments

Controller method for automatic voltage regulator

Basically automatic voltage regulator for generator have a 2 mode selection.It is with full automatic function and manual function. I already discuss about AVR function and basic operation in my last post.Please refer to basic of automatic voltage regulator.i hope it can make a clear view and understanding about AVR function in generator. This time [...]

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17 May 2011 ~ 6 Comments

UPS battery charger

When indicator for batteries level shown a it  need to recharge,We must charge the batteries to ensure it in full capacity and can operate during power failure.But for UPS batteries charger it typically build in the UPS system. Now in market,it have several battery charger technology for AC and DC UPS.Basically it similar with car [...]

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16 May 2011 ~ 0 Comments

Battery for UPS

For uninterrupted power supply ( UPS ),the important component is a battery unit for UPS.The battery are used to store DC energy which is later used to supply a block of energy to a load,often in the form of a high current for a short time example to charge mechanism springs in switch gear,fire fighting system,emergency lighting, emergency [...]

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03 April 2011 ~ 12 Comments

Automatic voltage regulator for generator

The AVR ( automatic voltage regulator ) is suitable for supplying power to the fields of either brushless or commutator type exciters and will maintain the A.C generator voltage within plus and minus 1% of the preset value with paralleling. When the load varies between no load and rated load and with a frequency changes [...]

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27 March 2011 ~ 1 Comment

Generators in parallel

When generators are operated in parallel condition,it necessary to be arrange for both real power ( kW ) and reactive load ( kVar ) sharing in proportion to their standard rating.Real load output from generator determined by torque applied to the shaft and this can only be controlled by controlling the prime mover driving the [...]

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23 February 2011 ~ 13 Comments

Types Of Earthing Systems

Last post i already discuss about Earthing system classification.I mention earthing system have a several types such as TT,IT,TN-C,TN-S and TN-C-S.This time i want explain detail about type of earthing systems. Earthing system is designed followed by electrical system required and the application.It have different earthing system for each electrical application such as consumer power [...]

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25 January 2011 ~ 0 Comments

Rectifier

This device is typical in control panel or automation industry.The main purpose of RECTIFIER is to convert from  AC ( alternating current ) to DC ( direct current ).It common use because now in market,all control device is using DC power supply.It safe and energy efficiency. Usually when we choose to control our machine or [...]

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