ESSENTIAL FEATURES OF SWITCHGEAR | Switchgear: Features, Components, and Classification


The essential features of switchgear are:


With the continued trend of interconnection and the increasing capacity of generating stations, the need for reliable switchgear has become of paramount importance. This is not surprising because switchgear is added to the power system to improve reliability. When a fault occurs on any part of the power system, the switchgear must operate to isolate the faulty section from the remaining circuit.


When a fault occurs on any section of the power system, the switchgear must be able to discriminate between the faulty section and the healthy section. It should isolate the faulty section from the system without affecting the healthy section. This will ensure continuity of supply.


When a fault occurs on any part of the power system, the switchgear must operate quickly so that no damage is done to generators, transformers, and other equipment by the short-circuit currents. If the fault is not cleared by the switchgear quickly, it is likely to spread into healthy parts, thus endangering the complete shutdown of the system.


A switchgear must have a provision for manual control. In case the electrical (or electronics) control fails, the necessary operation can be carried out through manual control.


There must be provision for instruments that may be required. These may be in the form of an ammeter or voltmeter on the unit itself or the necessary current and voltage transformers for connecting to the main switchboard or a separate instrument panel.

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Aanchal Gupta

Welcome to my website! I'm Aanchal Gupta, an expert in Electrical Technology, and I'm excited to share my knowledge and insights with you. With a strong educational background and practical experience, I aim to provide valuable information and solutions related to the field of electrical engineering. I hold a Bachelor of Engineering (BE) degree in Electrical Engineering, which has equipped me with a solid foundation in the principles and applications of electrical technology. Throughout my academic journey, I focused on developing a deep understanding of various electrical systems, circuits, and power distribution networks.

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