How many second we need to setting for changeover timer from STAR to DELTA sequence for Star Delta Starter?This question is very popular among electrician around the world when handling the Star Delta Starter for their application. From my experience,honestly,it quite difficult to get the accurate times for star delta changeover.But we can get the approximate times [...]
Motor temperature is one of the factor that we should monitor and make sure it running in a normal range.It is closely related with winding temperature.If temperature is highly from standard value,it can cause a winding insulator damage or weak. From that damage,it will make the internal short circuit between winding phase and can cause [...]
What happen if one of a cable broken or fuse blow while the electric motor is running?The answer is motor will run in two phase supply that can generate the high draw current due to unbalance of phase. Why the current value increase?From the theory, the current in the two phase would increase by 1.7 [...]
Electric motor have a two side of rotation.It is clockwise and anti clockwise or normally we call it forward and reverse rotation.An equipment or machinery that connected to electric motor have a rotation depend on manufacture design and application. Common rotating equipment that we can found at our surrounding area such as pump,air-compressor,water jet and etc.Normally manufacture put a [...]
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 [...]
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 [...]
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 [...]
