As we know,motor protection is one of the important criteria when we involve for AC motor installation,wiring and termination works.Commonly magnetic contactor,fuse, Molded case circuit breaker (MCCB) and overload relays are used for motor control device of induction motor. In general ideal for motor protection,it have two basic protections always installed for every motor are Over-load protection and Short-circuit protection.For [...]
As we know about circuit breaker is to protect electrical equipment from abnormal condition such as over load current or short circuit.For Low voltage circuit breaker,i already explain on my last post.Please read my post about miniature circuit breaker (MCB),molded case circuit breaker (MCCB) and residual current circuit breaker (RCCB) for more detail information. For [...]
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 [...]
A new terminology for electrical currents now include all faults those between live conductors as well as earth or grounding faults. If we not design our circuit protection properly followed standard guide,it can cause serious injury or death for human and equipment damage. Fault current be determined at every relevant point. For small and medium [...]
In automation industries,relay is a common device used for control application.Basic operation of electrical relay is a device that changes the state of a circuit in response to it being energized or de-energized by that or another circuit. It function to open or close the circuit or contact and respond depend on signal that we [...]
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 [...]
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 [...]
