In an electric power system, switchgear is composed of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream.
What are essential features of switchgear?
Switchgear essentially consists of switching and protecting devices such as switches, fuses, isolators, circuit breakers, protective relays, control panels, lightning arrestors, current transformers, potential transformers, auto reclosures, and various associated equipment.
What are the types of switchgear?
Switchgear Types There are three types of switch gears namely LV (Low voltage), MV (Medium voltage) and HV (High voltage) Switchgear.
What are the main components of LT switchgear?
Components of LT Switchgear: The term LT Switchgear includes low voltage Circuit Breakers, Switches, off load electrical isolators, HRC fuses, Earth Leakage Circuit Breaker, Miniature Circuit Breakers (MCB) and Molded Case Circuit Breakers (MCCB) etc i.e. all the accessories required to protect the LV system.
Switchgear Definition In the event of an electrical surge, an effective switchgear will trigger, automatically interrupting the flow of power and protecting the electrical systems from damage. Switchgears are also used for de-energizing equipment for safe testing, maintenance, and fault clearing.
What are the features of switchgear?
- Complete Reliability.
- Absolutely Certain Discrimination.
- Quick Operation.
- Provision for Manual Control.
- Power Conducting Components.
- Control System Components.
- Depending on the Voltage Level.
- Depending on the Voltage to be Handled.
What is switchgear and its types?
Switchgear is an integral part of an electric power system. Switchgear includes fuses, switches, relays, isolators, circuit breaker, potential and current transformer, indicating device, lightning arresters, etc. Let us find out more about switchgear by understanding how it works and what are its different types.Mar 1, 2021
What two main types of switchgear are used in an electrical system?
The switchgear is mainly classified into two types, the outdoors type and the indoor type. For voltage above 66kV, the output switchgear is used. Because for the high voltage, the building work will unnecessarily increase the installation cost owing to large spacing between the conductor and large size of insulators.
What are the main components of switchgear?
Components of Switchgear It includes two components namely power conducting and control systems. The components of power conducting include fuses, switches, circuit breakers, lightning arrestors which are used for interrupting the flow of electric power.
What is the difference between switchgear and circuit breakers?
Switchgear contains fuses, switches, and other power conductors. However, circuit breakers are the most common component found in switchgear. During an electrical fault, a circuit breaker will sense the anomaly and interrupt the power flow, effectively limiting damage to the system.