Types of high voltage circuit breaker 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 [...]
Basic terminology of electrical fault protection 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 [...]
The Range of Relay Characteristics Relay manufactures design them for special applications to full fill industries needed and coupe with advanced technologies. This time i want share information about relays characteristics most often used in typical automation and instrumentation work. As i explained in my last posted,basically principal for small DC and AC relays,sensitive relays, [...]
Relay Introduction 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 [...]
Circuit breaker is a 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 [...]
Magnetic contactor is a familiar device for control electrical motor,pump,capacitor and others.When it operate for long time,the main contact must be checked and cleaned due to sparking current during energized and de-energized. We also must cleaning the dust or foreign material to avoid magnetic contactor mechanism stuck or cannot function properly.Normally i perform the services [...]
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 [...]
What is dual voltage for electric motor? If we look at electric motor nameplate,we can see the several important information and specification about electric motor.This time i want explain about dual voltage for power supply. It is like a simple thing and not so important BUT if we make a mistake about electric motor voltage [...]
