Full Form of OVB

What is OVB?

An Over Voltage Breaker (OVB) is a protective electrical device designed to automatically interrupt the flow of current when the voltage in a circuit exceeds a predetermined safe level. In India, OVBs are critical components in the power distribution infrastructure, especially in industrial zones, substations, and railway electrification projects managed by organizations such as Power Grid Corporation of India and Indian Railways. These devices safeguard transformers, cables, and consumer equipment from damage caused by lightning strikes, switching surges, or grid faults. OVBs are employed extensively in high-voltage transmission lines and in renewable energy installations like solar farms to ensure system reliability. In examinations such as GATE Electrical Engineering, EE, and state-level engineering recruitment tests, questions on OVB operation, coordination with other protective relays, and maintenance standards frequently appear. Understanding OVB specifications and placement is essential for power engineers involved in designing and maintaining India's expanding transmission network. The device plays a vital role in minimizing unplanned outages and protecting life and property across urban and rural electrification schemes.

OVB का फुल फॉर्म

Example

The substation engineer verified that the OVB tripped correctly during the voltage spike caused by the sudden load rejection.

OVB — frequently asked questions

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