hamburger

Directional overcurrent relay is used for the protection of:

By BYJU'S Exam Prep

Updated on: October 17th, 2023

A directional overcurrent relay is used for the protection of ring main distribution lines. When there exists a sub-transmission network or a complex distribution, the relays are used to improve the coordination of the system. It is thus proved that one can use a directional overcurrent relay for the protection of the ring main distribution lines. Directional overcurrent relays are a type of relay that often respond to excessive current flow in a particular direction of the power system. Generally, there are two elements in a relay. One of the two-element is the element of the direction. In a directional element of a relay the direction of current flow with respect to a voltage reference. A normal non-directional overcurrent is used on incoming line circuit breakers that have two or more sources.

Answer: Directional overcurrent relay is used for the protection of ring main distribution lines.

Ring main distribution lines are the lines that exists in a interconnected system with two or more sources. In such a system, the directional overcurrent relays are usually connected with a trip of an incoming line breaker for fault current flow that can flow back to the source.

Summary:

Directional overcurrent relay is used for the protection of:

Directional overcurrent relay is used for the protection of ring main distribution lines. When there exists a sub-transmission network or a complex distribution, the relays is used to improve the coordination of the system. It is thus proved that one can use a directional overcurrent relay for the protection of the ring main distribution lines.

Our Apps Playstore
POPULAR EXAMS
SSC and Bank
Other Exams
GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com
Home Practice Test Series Premium