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Home /Products/Other/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

US $500.00 - 1200.00/ Set
Price
Qualitrol 900 910 Rapid Pressure Rise Relay Transformer Protection Oil Filled Transformer Pressure Monitoring Sudden Pressure Relay
Features Gallery Product Description Ratings & Review Request A Quote
Features
Specifications
Series: 900 (Oil-Filled Transformers) / 910 (Gas-Filled Transformers)
Function: Detects Rapid Pressure Rise And Provides Alarm Or Trip Signal
Application: Power Transformers, Distribution Transformers, Industrial Electrical Equipment
Switch Rating (AC): 10 A @ 120, 240 & 480 VAC
Power Factor (AC): 0.75
Switch Rating (DC): 0.5 A @ 125 VDC (Resistive); 0.25 A @ 250 VDC (Resistive)
Pressure Range (Sensing Bellows): -14.7 To 20 PSIG (-1.0 To 1.4 Bar)
Mounting Style: Flange Mount Or Thread Mount
Thread Connection: 2-1/2"-8 NPT Male Thread
Ingress Protection: IP65 (Standard)
Operating Temperature: -40°C To +82°C (-40°F To +180°F)
Highlight:

Qualitrol 900 rapid pressure rise relay

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910 transformer protection relay

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oil filled transformer pressure monitoring
Basic Infomation
Place of Origin: USA
Brand Name: Qualitrol
Model Number: 900/910
Payment & Shipping Terms
Packaging Details: Cardboard box/Wooden crate
Delivery Time: 6-8 weeks
Payment Terms: T/T
Supply Ability: 500 sets per year
Product 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
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

A
Azharu deen
Saudi Arabia May 17.2024
Helpful (21)
Great buying experience. The seller was very professional, offered a fair price, and delivered exactly on time. Communication was quick and helpful throughout the process. Highly recommended!
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Contact Person : Mr. Edward Zhao
Tel : +8615000725058
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edward.zhao@gongboshi.com
+8615000725058
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