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 [...]
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 [...]
For star delta stater,the motor connection must have 6 cables from control panel and 6 terminals at induction motor ( U1,U2,V1,V2,W1,W3).To wiring the motor connection for star delta starter,the important thing that we must fully understand is about the basic of STAR DELTA MAGIC TRIANGLE. For detail about star delta stater please read my last [...]
This is a starting method that reduces the starting current and starting torque. Star delta starter design normally consists of three contactors, an overload relay and a timer for setting the time in the star-position (starting position). For the star delta starter, a motor must be in delta connected during a normal run and the [...]
Around the world it famous with name DOL starter or direct on line starter.This is the most common starting method available on the market and at basic stater for all motor application.The starting equipment consists of only a main contactor and thermal or electronic overload relay.The disadvantage with DOL starter is that it gives the [...]
A soft starter has different characteristics to the other starting methods. It has thyristors in the main circuit, and the motor voltage is regulated with a printed circuit board.It can control the current flow to motor more efficient and stability. The soft starter makes use of the fact that when the motor voltage is low [...]
Basically motor starter designed for asynchronous motors or induction motor is a mechanism to start and stop the motor operation.It also provides over current,overload and short circuit protection during operation. The main task is the starter motor to reduce motor starting currents,High inrush current and prevent the motor from operating when suddenly the power supply [...]
