On-Load Tap-Changing Transformer

Definition: The transformer which is not disconnected from the main supply when the tap setting is to be changed such type of transformer in known as on-load tap changing transformer. The tap setting arrangement is mainly used for changing the turn ratio of the transformer to regulate the system voltage while the transformer is delivering…

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Difference Between Grounding and Earthing

One of the major difference between the grounding and the earthing is that in grounding, the current carrying part is connected to the ground whereas in earthing the non-current carrying parts is connected to ground. The other differences between them are explained below in the form of the comparison chart. Content: Grounding V/S Earthing Comparison…

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Difference Between Core Type and Shell Type Transformer

One of the major difference between the core type and the shell type transformers is that in core type transformer,  the winding encircles the core, whereas, in shell type transformer, the core encircles the winding of the transformer. Some other differences between them are explained below in the form of the comparison chart. Comparison: Core…

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Protection Zone in Power System

Definition: Protection zone is defined as the part of the power system which is protected by a certain protective scheme. It is established around each power system equipment. When the fault occurs on any of the protection zones then only the circuit breakers within that zone will be opened. Thus, only the faulty element will…

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Electrical Grid

Definition: Electrical grid or power grid is defined as the network which interconnects the generation, transmission and distribution unit. It supplies the electrical power from generating unit to the distribution unit. A large amount of power is transmitted from the generating station to load centre at 220kV or higher. The network form by these high…

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Metal Oxide Surge Arrester

Definition: The arrester which uses zinc oxide semiconductor as a resistor material, such type of arrester is known as a metal oxide surge arrester or ZnO Diverter. This arrester provides protection against all types of AC and DC over voltages. It is mainly used for overvoltage protection at all voltage levels in a power system.…

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Overhead Ground Wire or Earth Wire

Definition: The overhead earth wire or ground wire is the form of lightning protection using a conductor or conductors. It is attached from support to support above the transmission line and well grounded at regular interval. The earth wire intercepts the direct lightning strikes, which would strike the phase conductors. The ground wire has no effect…

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Electricity Tariffs

Definition: The amount of money frame by the supplier for the supply of electrical energy to various types of consumers in known as an electricity tariff. In other words, the tariff is the methods of charging a consumer for consuming electrical energy. The tariff covers the total cost of producing and supplying electric energy plus…

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Electrical Insulating Material

Definition: The material which does not allow the electricity to pass through them is known as an electrical insulating material. The charge of the insulating material does not move freely, or in other words, it provides the high resistive path to the electric current through which it is nearly impossible for the electric current to…

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Pin Insulator

The pin insulator is used in power distribution for the voltage up to 33kV. It is placed on the cross arm of the supporting tower. The pin insulator has grooves on the upper end for keeping the conductor. The conductor is tied to the insulator on the top groove on straight line positions and side groove in…

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