General Requirement For Circuit Breaker

19/08/2013 by 1 Comment

Circuit protection is a mandatory items that we MUST consider carefully for Electrical Installation project.I will take a fully attention during sizing and follow standard requirement for circuit breaker.

If the circuit protection not function properly, it’s can cause a serious damage to equipment and personnel.On my last post,I had discussed about Circuit Breaker Sizing.

This time I want to share some information about general requirement for circuit breaker that commonly apply for Electrical Installation project.I hope this post can help to have a basic guideline during handle any project of electrical installation. read more

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Troubleshooting guide when motor overload trip

30/07/2013 by 9 Comments

On my last post,I’d discussed about motor overload relay that are common used for motor starter application.As we known,the main purpose of motor overload relay is to protect our electric motor winding from mechanical overload that can result the serious damage.

This time I want share basic guideline or troubleshooting method how to troubleshooting when motor overload relay trip.I hope this post can give some ideas or clear view when you face this similar problem during your routine jobs. read more

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Braking system for electric motor

16/08/2011 by 1 Comment

Braking application for electric motor are used widely around the world for equipment or machinery such as electric crane,barrel machine,electrical train,lift or for industrial drive.

Basically the braking system for electric motor fundamental is a one mechanism to created retarding torque to stop the motor rotation with sudden or slow stop depend on application system.

Not all electric motor must have braking system.Normally it used for drive application that have lot of energy stored in rotating part for machine or equipment.It also used for driven system that required rapid deceleration and can controlled for accident or emergency situation. read more

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Types of Molded Case Circuit Breaker MCCB

02/08/2011 by 1 Comment

Before we make a decision to install Molded case circuit breaker for our application,firstly we need to know about types of MCCB.It important information that we must know to make sure our MCCB can functioning properly to protect our application from electrical failure.

As we know the main function of MCCB are to protect our electrical application from short circuit or earth leakage and overload current.Manufacture have a their own design and types to suit domestic and industrial application.

To make a right selected for MCCB,the key point is to know what is our application or system and what protection we needed to install.After that,we can know which one of MCCB types we need for our application. read more

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MCCB protection for induction motor

31/07/2011 by 3 Comments

Circuit breaker is the one of important protection device when installing of electrical induction motor.This time i want shared some information about the major parameter that we need consider when applying Molded case circuit breaker(MCCB) for electric motor.

If we not selected the right MCCB for our electric motor application,it will effected to the system and it not running smooth and achieve our expectation.It will cause a additional costing for upgrading and repairing jobs.

Basically it have three (3) particular for induction motor protection.It is overload,locked rotor and short circuit breaker.This point is very important to ensure our motor protection reliability when problem happen. read more

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What is an electric shock?

28/07/2011 by 5 Comments

In the Electrical Engineering field,many cases of accident or death around the world causes by electric shocked.It very dangerous because we cannot see,smell and feel the electric current.

Current flow into our body and can make heart stop from functioning and can cause the serious injury even death.The level of danger for electric shock depends on the value of the body current and the time for which the current flows.

Human body have a different insulation value (Ohm) and also different current value can effected the heart.For the body have a low current level,it can easily attack the heart function and it so dangerous.

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Electrical installation

24/07/2011 by 3 Comments

When we want to setup the new building or electrical application,it must have connection with electricity.So we need the electrical installation to make our application function properly and safety for human and equipment.

Theoretically electrical installation is a variation of electrical devices installed to achieve  specific purpose for any application.The key point that we must alert when dealing with the electrical installation is to take care necessary to ensure the safety of personnel and the protection of equipment from electrical faults.

So electrical installation is important subject that we must consider and get a clear view to avoid any injuries or damage for human or equipment.I want shared some information about electrical installation. read more

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