Product Details of Gas Relay for Oil-Immersed Transformer

1. Product OverviewThe gas relay is a crucial safety protection device on oil-immersed transformers and is installed on the connecting pipe between the transformer tank cover and the oil conservator.

2. Working PrincipleIt is a component that uses the hot oil flow and hot gas flow generated during a fault in the transformer to actuate the relay. When a fault occurs inside the transformer, such as discharge, the discharge arc will cause the transformer oil to decompose, generating various characteristic gases such as methane, acetylene, hydrogen, carbon monoxide, carbon dioxide, ethylene, and ethane. The more severe the fault, the greater the amount of gas produced. During the process of these gases rising from the inside of the transformer to the upper oil pillow, they will flow through the gas relay installed in the pipeline between the transformer oil pillow and the tank. If the amount of gas is small, the gas may only connect the signal circuit when flowing through the relay, causing the relevant device to send out an alarm signal; if the amount of gas is large, it will connect the trip circuit and remove the transformer from the power grid, thereby achieving the role of protecting the transformer.

3. Product Advantages

1. High Sensitivity: It can promptly sense minor fault changes inside the transformer.
2. Reliable Protection: Accurately perform signal or trip operations, effectively ensuring the safe operation of the transformer.
3. Easy Installation and Maintenance: Its installation location and structural design are convenient for on-site operations.

In conclusion, the gas relay for oil-immersed transformers is a key component for ensuring the stable operation of the transformer and the safety of the power system.