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Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Specifications
Packaging Details :
Cardboard box/Wooden crate
Application :
Power Transformers, Distribution Transformers, Industrial Electrical Equipment
Model Number :
900/910
Thread Connection :
2-1/2"-8 NPT Male Thread
Payment Terms :
T/T
Series :
900 (Oil-Filled Transformers) / 910 (Gas-Filled Transformers)
Mounting Style :
Flange Mount or Thread Mount
Delivery Time :
6-8 weeks
Switch Rating (AC) :
10 A @ 120, 240 & 480 VAC
Pressure Range (Sensing Bellows) :
-14.7 to 20 PSIG (-1.0 to 1.4 bar)
Supply Ability :
500 sets per year
Power Factor (AC) :
0.75
Switch Rating (DC) :
0.5 A @ 125 VDC (Resistive); 0.25 A @ 250 VDC (Resistive)
Operating Temperature :
-40°C to +82°C (-40°F to +180°F)
Place of Origin :
USA
Price :
US $500.00 - 1200.00/ Set
Function :
Detects rapid pressure rise and provides alarm or trip signal
Brand Name :
Qualitrol
Ingress Protection :
IP65 (Standard)
Description
Qualitrol 900/910 Sudden Pressure Relay
Product Overview

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.

Technical Specifications
Parameter Specification
Models 900 (top mounted), 910 (side mounted)
Function Sudden pressure rise detection
Application Liquid-immersed power transformers
Operation Mechanical actuation on rapid pressure increase
Mounting Options Top or side mounted
Alarm / Trip Provides alarm or trip signal
Design Robust mechanical construction
Application Industry
  • Power generation and utilities
  • Electrical transmission and distribution
  • Transformer manufacturing and maintenance
  • Industrial power systems
  • Substation protection
Common Problems & Solutions
  • 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
Replacement Models
  • Older Qualitrol sudden pressure relays
  • Other transformer protection devices
Why Buy From Us
  • Genuine Qualitrol 900/910 relays with factory support
  • Competitive pricing for critical protection equipment
  • Technical assistance for selection and installation
  • Reliable spare parts availability
Stock & Delivery Time
  • Standard models: 6–8 weeks typical
  • Special configurations: 6–12 weeks
RFQ Form

Please provide:

  • Transformer type and mounting preference (900 or 910)
  • Required pressure settings
  • Application details
  • Quantity & target delivery date
Send your message to this supplier
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Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay

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Product Detail
Packaging Details :
Cardboard box/Wooden crate
Application :
Power Transformers, Distribution Transformers, Industrial Electrical Equipment
Model Number :
900/910
Thread Connection :
2-1/2"-8 NPT Male Thread
Payment Terms :
T/T
Series :
900 (Oil-Filled Transformers) / 910 (Gas-Filled Transformers)
Contact Supplier
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay

Xiangjing (Shanghai) M&E Technology Co., Ltd

Verified Supplier
8 Years
shanghai, shanghai
Since 2015
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Pneumatic Control Valves, Electric Control Valves, Pressure Reducing Valve
Total Annual :
30,000,000-50,000,000
Employee Number :
200~300
Certification Level :
Verified Supplier
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