Oil Surge Relay for Transformers: Working, Function & Protection

Transformers are vital components of the electric power system used to deliver electric power from one utility or industrial source to another. A fault within the transformer itself can result in significant physical damage to the transformer, costly downtime, and can even pose a risk to personnel. To protect transformers from these failures, the oil surge relay is engineered to detect rapid movement of the transformer oil caused by internal faults, such as short-circuits or insulation failures.

For power systems that are becoming more and more necessary to provide reliable and efficient electricity to customers, it is critical to have a high quality oil surge relay installed so that a transformer can perform at optimum levels and continue to provide an acceptable level of safety to both workers near the transformer and the utilities and industries they serve.

What is The Oil Surge Relay?

An oil surge relay is a protective device that detects rapid flows of transformer oil as a result of internal short-circuits, insulation failures and winding faults. Oil surge relays are usually mounted between the transformer tank and its conservator (gas tank for the transformer), typically in switching compartments where OLTC are installed.

There is an abrupt change in oil flow when there is a fault. The oil surge relay detects this unusual condition and immediately activates an alarm or tripping contacts, which isolates the transformer to minimize the risk of additional damages.

Due to its rapid response time, the oil surge relay is very effective at preventing catastrophic transformer failures.

Importance of Oil Surge Relay in Transformers

Know About Function and Protection of Oil Surge Relay by dhrutisales.co.in