Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay

The Qualitrol 900/910 Sudden Pressure Relay provides fast detection of rapid pressure rise inside liquid-immersed power transformers. Available in top-mounted (900) and side-mounted (910) configurations, it offers reliable mechanical operation to signal potential faults and help prevent catastrophic failures.

• Power generation and utilities
• Electrical transmission and distribution
• Transformer manufacturing and maintenance
• Industrial power systems
• Substation protection

• Problem: Delayed fault detection → Solution: Rapid response to sudden pressure rise
• Problem: Installation limitations → Solution: Available in top and side mounted versions
• Problem: Reliability in harsh environments → Solution: Proven mechanical design for transformers

• Older Qualitrol sudden pressure relays
• Other transformer protection devices

• Genuine Qualitrol 900/910 relays with factory support
• Competitive pricing for critical protection equipment
• Technical assistance for selection and installation
• Reliable spare parts availability

• Standard models: 6–8 weeks typical
• Special configurations: 6–12 weeks

Please provide:

• Transformer type and mounting preference (900 or 910)
• Required pressure settings
• Application details
• Quantity & target delivery date