Buchholz Relays

The Buchholz Relay is a critical safety device used in oil-immersed power transformers and reactors. Positioned between the main tank and the conservator, it detects gas accumulation and oil flow caused by internal faults such as short circuits, insulation failure, or core overheating.

By providing early fault detection, the Buchholz Relay helps prevent severe damage and enhances the operational safety and reliability of transformer systems. It typically triggers alarms or shuts down the transformer to minimize risks.

• Detects slow-developing and sudden internal faults
• Provides early warning via gas collection and oil surge detection
• Enables preventive maintenance and minimizes transformer downtime

Ideal for high-voltage transformers, the Buchholz Relay is a proven safeguard in power distribution and transmission networks.