Emergency and standby power system

29/10/2011 by Leave a Comment

When design the electrical installation and electric power for building or factory,the main objective that we need to focus is about emergency and standby electric power systems.The main reason  is the about safety of building occupants following a power outage.

When danger or disaster happened at building or factory such as fire,heavy smoke, chemical hazard,tsunami or earthquake,the emergency procedure backup power system is important and it required for evacuation from the building.

At the very least, emergency and standby power systems should provide lighting to assure the safe evacuation and  panic-free exit of people from the building. read more

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Types of excitation system

05/09/2011 by 5 Comments

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 about excitation system for generator.I suggest for more detail information and understanding,please contact your local generator supplier.Below are listed types of excitation system for generator :- read more

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Generator exitation

03/09/2011 by 11 Comments

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 generator running in the suitable voltage.It also controlled the value of current when generator connected to a large load.It will receive or delivery the required level for reactive power ( kVAr). read more

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Types of generator

31/08/2011 by 4 Comments

Generator is the important power supply equipment to generated electricity.Without electricity,we cannot operated machinery,equipment,lighting,computer and others device for our living.

For general power supply,power distributor normally used the high capacity of generator to supply the electricity to the consumer.It different size for backup power supply that used for hospital,server room,critical equipment or important area.

I want share some information about types of generator and basic operation.Generators are generally classified in accordance with speed and construction.We can categories the generator with following types. read more

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Controller method for automatic voltage regulator

20/08/2011 by 3 Comments

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 i want share some information about controller method that commonly used for AVR for generator.For latest design of AVR,manufacture put a two(2) selection for AVR controller mode.It is Automatic and Manual mode. read more

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Basic of automatic voltage regulator

13/08/2011 by 37 Comments

Basically the AVR or Automatic Voltage Regulators function for generator is to ensure voltage generated from power generator running smooth to maintain the stable voltage in specified limit. It can stabilize the voltage value when suddenly change of load for power supply demand.

If the generator running in parallel condition,the AVR can controlled the voltage that it produce to ensure of equal value for reactive load sharing.

For the big system of interconnected power distribution with parallel design,it must have a full controlled and transient stability particular must added for requirement to the Automatic Voltage regulator for generator. read more

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Automatic voltage regulator for generator

03/04/2011 by 34 Comments

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 more than plus minus 4%.Upon application or rejection of rated load,the generator voltage recovers to plus and minus 1% within 0.3 second on most AVR exciter in A.C generator combination. read more

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