Accessories for MCCB

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

Electro-Mechanical star delta starter

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

How to choose speed controllers for AC motor?

Now around the world are using the speed controllers to control and drive their electric motor such as frequency inverter and soft starter.This speed control get a good reputation to reduce electricity cost and high efficiency to drive electric motor.

Speed controller is low maintenance and have a long life span.It easy to install and user friendly to setup and setting the parameter.

The wiring for power supply and control circuit is not so complicated like conventional motor control.This post i want share some basic aspects for choose the suitable ac motor speed controller that we must consider when to buy or install it on our application.I hope this information can be the basic guideline. read more

Maintenance for low voltage circuit breakers

Low circuit breaker normally operating at 600 volt AC and below.The common used types of  circuit breaker around the world such as molded case circuit breaker (MCCB) and Air circuit breaker ( ACB ).

This low voltage circuit breaker usually used for power distribution and sub power distribution at factory and general industry.It a combination with electrical and mechanical device to protect our electrical system from overload and over current matters.

IEE regulation stated a several condition for maintenance and services for circuit breaker.The main purpose is to make sure this circuit breaker in good condition and can activated when problem happen.It also for safety purpose for equipment and personnel. read more

Molded case circuit breaker maintenance

The circuit breaker maintenance is very important and it must added in  periodical maintenance schedule.Why it so important?It is because of their importance for routine switching and for equipment protection and person.

Production will stop if circuit breaker fails to operate because of a lack of preventive maintenance.The cost will rise for repairing jobs and it not good for business.We must avoid from this unwanted situation because of not done the circuit breaker maintenance.

The need for maintenance of circuit breakers is often not obvious as circuit breakers may remain idle for long periods of time. Breakers that remain idle for 6 months or more should be made to services to ensure it in proper condition and remove any dust or foreign material on mechanism and contacts. read more

Sizing for magnetic contactor

When we design or replaced the magnetic contactor for motor starter or for others application,the important point is how to sizing the size of magnetic contactor.This is critical point because if we not sizing properly,it can cause a serious damage and our application maybe failure to perform in perfect condition.

This time i want  shared some information and basic technique how to sizing the magnetic contactor with properly method and suitable with our application needed.It is to ensure our application design is correctly function and have a good resulted. read more

Sensor

This device is very common used in manufacturing industry,office,house hold,school,highway and every placed around us.It very important to sensing and send a signal to control panel for further application.

Basically we can elaborate meaning of sensor in easy understanding are device to detected physical condition such as temperature,pressure,motion,metal and non-metal and many more function.

Sensor application very popular  for industries such as automotive,FPD and semiconductor,machine or metal,ICs and electronic components,food processing and packaging also rubber and plastic.It successful to make production running properly,accurate,smooth and faster. read more