An electrical transformer is one of the most widely used electrical machines in power system. The main function of a transformer is to change the voltage levels in the system for different purposes. Depending on the purpose, these transformers can be classified into different types like step-up transformer, step-down transformer, ... Read More

In electrical engineering, there are several different types of transformers for different applications. Two such transformers are CVT and PT.CVT stands for Capacitive Voltage Transformer and PT stands for Potential Transformer. Both CVT and PT are the types of instrument transformers and thus are used in protection and metering applications. ... Read More

Residual Current Circuit Breaker (RCCB) is a type of circuit breaker used in electrical circuits for protection purposes. The primary function of an RCCB is to detect a leakage in the circuit current. If there is any leakage in the current, the RCCB can interrupt the circuit and prevent the ... Read More

An indoor substation is one in which the entire substation is built inside a building, whereas an outdoor substation is a substation in which the equipment are installed in an open environment. Read this article to understand all the important differences between indoor and outdoor substations. Let us start this ... Read More

A power plant is a systematic arrangement of electrical equipment used for producing electrical power. In other words, an industrial facility used for producing bulk amount of electric power is called a power plant. Power plant is also called generating station or power station. These power plants are connected to ... Read More

In electrical power systems, electric power is generated, transmitted, and distributed in the form of alternating current. The electrical power is generated at a power generating station which is located far away from the consumer's load. The generated power is then transmitted and distributed through an electrical network to the ... Read More

In electrical power systems, an instrument transformer is used in measurement and protection applications. A current transformer is nothing but a specially designed voltage step-up and current step-down electrical transformer which is used to reduce the high currents in power lines to a safe value for metering and protection applications. ... Read More

AIS and GIS are the two most widely used switchgear technology in the field of electrical substations. AIS stands for Air Insulated Switchgear and GIS stands for Gas Insulated Switchgear. A substation in which the insulation between phases is provided by the atmospheric air is called an air insulated substation ... Read More

Oil circuit breakers (OCBs) are used for performing the following two important functions - Switching of electric supply Protection of electrical system They are called oil circuit breakers because in this type of circuit breakers, insulating/dielectric oil is used for quenching the arc. In this article, we will ... Read More

In electrical engineering, a relay is an electromagnetic or an electronic switch that can automatically operate if any abnormal conditions occur in the circuit. The primary functions of a relay are to monitor the circuit, sense the fault, and initiate the tripping of the circuit if a fault occurs in ... Read More