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Home /Products/Other/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

1
MOQ
US $500.00 - 1200.00/ Set
Price
QUALITROL 900/910 RPRR Transformer Safety Pressure Protection Relay Transformer Pressure Relay Supplier
Features Gallery Product Description 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 900/910 RPRR transformer relay

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transformer pressure protection relay

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safety pressure relay with warranty
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

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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Get in touch with us
Contact Person : Mr. Edward Zhao
Tel : +8615000725058
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Get In Touch
No.6 Building,No.98 Lane, No.1 Fulian Road, Baoshan District, Shanghai, China
edward.zhao@gongboshi.com
+8615000725058
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