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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method for braking electric motor

17/08/2011 by 1 Comment

On my last post, I’m already explained about braking system for electric motor.It about a introduction for braking system for electric motor.

This time i want share some information about two common method that used around the world for braking electric motor for any application,equipment or machinery system.

For this two method for braking electric motor system are d.c injection and plugging is suitable application to stop a drive efficiently depend on our system and design. 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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Battery systems

10/08/2011 by 2 Comments

Batteries is one of the common thing in our daily application.We used it for domestic and industrial application.It can stored the electricity energy to made our equipment function properly.

We need to choose the suitable type of battery system depend on our application and design to ensure it can operated with maximum capacity.It have in several type such as dry type and wet types with different ampere rating from low to high current capacity.

In the market now we can selected several type of system for battery can suit for our needed and design.Below i listed basic categories for battery system read more

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Accessories for MCCB

07/08/2011 by 13 Comments

As we known,Molded Case Circuit Breaker main function is protection device from overload current and short circuit.It also have a several attachment device for additional protection that we can combine with MCCB.

Common accessories used for MCCB such as phase insulation barrier,Shunt trip,Under voltage trip device,rotary handle and change over system.It can provide more protection function that we want add to the application.

Manufactured design for all electrical accessories provide for MCCB are pre wired.It must attach with MCCB and others device recommended from manufacture for efficient and durability to protect the application of system.Below i listed several common accessories for MCCB :- read more

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Electro-Mechanical star delta starter

06/08/2011 by 36 Comments

Star Delta starter is the most widely used application especially for Air-compressor and HVAC system.This starter used for 6 or 12 wire for motor terminal depend on electric motor that chosen for the application.

Basically this starter used 3 unit contactor,1 unit timer delay,1 unit overload relay and start/stop button to control the star delta motor.Around the world,it have many types of control circuit design for star delta.

It have different design and technique  for the control circuit but the main objective is same,to reduce starting inrush current.

For safety condition for the star delta control circuit,it include with interlock for star and delta sequence to avoid serious damage for electric motor.That mean during star sequence,contactor for delta cannot energize or vise versa. read more

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Safety precaution for electrical works

04/08/2011 by 17 Comments

As we known when working on electrical installations, safety matter is our priority.Every step we need to consider about hazards when perform electrical works.

Only competent electrician can work on electrical installation or live condition according to relevant industrial safety standards.Common industrial safety standard for electrical works such as VDE 0105 for Germany, and international standards for EN 50110 or IEC 60364.

For electrician,they need to special tools which have been tested and qualified with electrical standard.Hand tools also must suitable and followed the electrical standard  IEC 60900 and it has specified worldwide requirements for tools for electrical live condition.

read more

Filed Under: Electrical Safety Tagged With: , , , , , , , ,
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