Tricky but Easy Electrical Engineering!
Single Circuit Transmission Line refers to an arrangement of conductor over the Transmission Tower. In Single Circuit Transmission Line, three conductors corresponding to three distinct phases i.e. R, Y & B phase are run on the Transmission Tower. Double Circuit Transmission Line refers to the arrangement in which a total of six conductors are provided … Read more
GMD & GMR stands for Geometrical Mean Distance and Geometrical Mean Radius. This concept is very useful in Power System for the calculation of Inductance and Capacitance of Transmission Line. Basically, as we know that Geometrical Mean of n numbers a1,a2,a3,….,anis (a1a2a3a4….an)1/n The same concept is also used for the calculation of GMD and GMR. … Read more
The conductor is one of the important item in a Transmission Line and proper selection of conductor and its size is very important for economy and efficiency point of view. A conductor used for Power evacuation and distribution must have the following qualities: High electrical conductivity. High tensile strength to withstand mechanical stress. Low cost … Read more
As we know, a three phase Transformer bank connected in Delta-Delta when supplies a three phases balanced load then individual Transformers share 1/3 of the total load. But if there is some fault in any one of the Transformer and due this one Transformer is taken out of service, then also three phase power can … Read more
Power from Generating Station to the Load Center is transmitted by 3 phase 3 wire system. The comparison between 3 phase Power Transmission and 1 phase Power Transmission is done assuming the Power to be transmitted, Voltage, Distance and loss to be same. From the economy point of view the weight of conductor required for both the cases … Read more
Because of flow of electric current through the winding of Transformer and due to core losses, heat is produced in the windings and core. Because of this heat the temperature of Transformer oil increases. Thus cooling of Transformer Oil is must as we know that the rating of any electrical equipment depends upon its allowable … Read more
Anti Pumping Relay is used in a Circuit Breaker to indicate the spring failure of TNC i.e. Trip Neutral and Close (TNC) switch. TNC switch is used to manually Open and Close the Circuit Breaker either from Local or Remote. This is called TNC switch as it has three positions namely TRIP, NEUTRAL and … Read more
Per unit system is a method used in Electrical Engineering for the analysis to express the voltage, current, kVA and impedance in per unit of base or reference values of these quantity. Per Unit values for any system is obtained by choosing a set of some base or reference value which can be chosen arbitrarily. … Read more
The purpose of the insulator or insulation is to insulate the electrically charged part of any equipment or machine from another charged part or uncharged metal part. Creepage Distance is the shortest path between two conductive parts measured along the surface of the insulation as shown in figure below. When a flashover occurs in the … Read more
The winding is the component with the highest temperature within the transformer and it is the component which is subjected to the fastest temperature increases as the load increases. Therefore for the control of the temperature parameter within the transformer, the temperature of the winding, as well as top oil, is measured. The temperature of … Read more