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

Qualitrol 900/910 sudden pressure relays offer critical protection for liquid-immersed transformers by detecting rapid internal pressure rises. With top and side mounting options, they provide flexible and reliable mechanical safeguarding against major faults.

Technical Specifications
Parameter Specification
Model Options 900 (top mounted), 910 (side mounted)
Function Rapid pressure rise detection
Application Power transformers
Design Mechanical relay
Mounting Top or side
Response Fast actuation for alarm/trip
Application Industry
  • Power utilities
  • Substation equipment
  • Transformer manufacturers
  • Heavy industrial facilities
  • Electrical grid protection
Common Problems & Solutions
  • Problem: Undetected internal arcing → Solution: Fast sudden pressure response
  • Problem: Installation flexibility → Solution: 900/910 dual mounting designs
  • Problem: Long-term reliability → Solution: Proven mechanical construction
Replacement Models
  • Older sudden pressure relays
  • Other transformer protection devices
Why Buy From Us
  • Genuine Qualitrol protection relays
  • Technical guidance for proper selection
  • Competitive pricing
  • Spare parts and service support
Stock & Delivery Time
  • Standard models: 6–8 weeks
  • Special orders: 6–10 weeks
RFQ Form
  • Please provide:
  • Preferred mounting type
  • Transformer details
  • Application environment
  • Quantity & delivery schedule
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QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier

Ask Latest Price
Product Detail
Delivery Time :
6~8 weeks
Function :
Detects rapid pressure rise and provides alarm or trip signal
Model Number :
900/910
Mounting Style :
Flange Mount or Thread Mount
Price :
US $500.00 - 1200.00/ Set
Packaging Details :
Cardboard box/Wooden crate
Contact Supplier
QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier
QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier
QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier
QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier

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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