Basic of Motor Control

What is definition of motor control?This is familiar question from electrical person around the world.Motor control is common practice for machine application and industry operation.

Basically motor control definition is to STOP and START the electric motor.Technology and innovation of motor control is always developed to parallel with current application needed.

Motor control have a two basic methods.There is MANUAL control and MAGNETIC control.I describe detail about manual and magnetic control circuit diagram and basic operation. read more

Star Delta Circuit Diagram

The most active post in Electrical Engineering Centre blog is Star delta starter and Star Delta motor connection.I received many comments and request for Star Delta circuit diagram.

So this time i want share my simple star delta circuit diagram completed with power and control line circuit.I hope it can be as basic reference for all electrician about star delta starter diagram.

Star delta starter is a common used in domestic and industry sector to drive variant application such as chiller water pump,machinery,air-compressor and many more equipment. read more

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 reducing the size of a mechanical brake.

This time i want share information about D.C. motors field winding.It normally are divided into three classes for our application and need to selected to match for our operation functional. read more

Drawing for electrical installation

For electrical installation,the main factor to completed the task with quality and in time,we must make sure the detail and comprehensive drawing are provided.

These drawing is important to show in clear view about position of electrical equipment,access for electrical cable,switch and socket location and others important item.

The drawings scale are based upon the architect’s site plan of the building completed with electrical symbol to identified the electrical equipment for the real site to show the actual placed for installation works. read more

Thermal model protection for Soft starter

Motor protection is the one of important criteria that we must consider when design the application to avoid serious damage or injury.

Normally we used thermal overload relay to protect electric motor from overload current problem.But if we used soft starter to driven our motor application,the suitable types of protection is using the motor thermal model.

This types provide more precise protection for electric motor and it more accurate and efficient.It only available for high end motor protection relay for conventional starter. read more

Types of soft starter

Soft Starter is the common application for electric motor control driven for industry.It efficient motor control and the application is user friendly.

Soft starter now more advance technologies and can replaced conventional motor starter such as star delta starter,auto transformer or Direct Online starter.It already built in the motor control system and easy to install and wiring to our application.

This time i want share some information about types of soft starter.These types is different because it depend on application and system design.Before we install a new soft starter to our application,we need to understand basic types of soft starter. read more

Escape and emergency lighting

In accordance with the Fire Precautions Act 1971 and the Health and Safety at Work Act 1974, BS EN 1838 : 1999 Code of practice for the emergency lighting of premises must followed with minimum standards to achieve the safety target.

It is important matter for safety precaution when emergency happen such as fire,explosive,electrical disaster or etc.This system provide the solution for escape to the assembly point in safety and proper ways.

For each country it have their own Act,regulation and code of practice.Basically it quite similar and have additional items depend on their application and suitable with their country. read more