Static Excitation System

Why Excitation is needed in Alternators? Alternators are known as Double Excited machines as they need two energy inputs for the desired operation. Rotational energy input is provided by the Turbine which is coupled to the Alternator rotor directly and the Field Supply to the rotor is given by the Excitation system. Alternators work on […]

Protection Relay

What is Protection Relay? A relay is nothing but a sensor, which senses an abnormal condition of an electrical circuit and closes its contacts. These contacts in turns close and complete the circuit breaker trip coil circuit which trips the circuit breaker by isolating the faulty portion of the electrical system from the healthy portion. […]

Boiler Drum & Auxilariers

Boiler Drum is a very crucial part in case of Sub-critical boilers. It is cylindrical in shape and situated at the top of the boiler. In Super-critical units, water is directly converted into steam so drum is not required, but in case of subcritical boilers, the whole water quantity is not directly converted into steam. […]