Classification of substation
There are several ways of classifying sub-stations. However, the two most important ways of classifying them are according to (1) service requirement and (2) constructional features. According to service requirement.…
There are several ways of classifying sub-stations. However, the two most important ways of classifying them are according to (1) service requirement and (2) constructional features. According to service requirement.…
The type of circuit breaker, which operates in air (where air-blast as an arc quenching medium) at atmospheric pressure, is known to be an Air Circuit Breaker. Air circuit breaker has…
We know that Transformer rating may be expressed in kVA as well as Generator and Alternator rated in kVA. There are two type of losses in a transformer; 1. Copper Losses 2.…
What is a Relay? Relays are widely used for protection of system which makes the system aware whether it has abnormal condition or a fault. If the system is under…
A certain amount of money rate is charged to the consumer for consumption of electrical energy. This money rate is known as Tariff orthe tariffis the rate at which the…
Need Of Switchgear: A great demand for electrical energy is a notable feature of modern civilization. Most of this energy is needed for lighting, heating, domestic appliances, industrial electrical machinery…
Power semiconductor devices first appeared in 1952 with the introduction of the power diode. The thyristor appeared in 1957.Thyristors are able to withstand very high reverse breakdown voltage and are…
Electrical isolationis necessary to protect: - Circuits Equipment People from shocks and short circuits To make accurate measurements. Isolation transformersare used to transfer electrical power from a source of alternating…
In an AC system, voltage conversion is simple. An AC transformer allows high power levels and high insulation levels within one unit, and has low losses. It is a relatively…
A generating station which employs gas turbine as the prime mover for the generation of electrical energy is known as a gas turbine power plant In a gas turbine power…