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XPRD Extra Large Pressure Relief Device
Brand: Qualitrol CompanyMechanical over pressure protection device with integrated directional discharge outlet.
Provides pressure relief and insulating fluid containment (requires optional piping) on transformers and load tap changers during over pressure conditions.
Automatically reseals once pressure has fallen.
Features- Dual spring loaded valve for quick operation and reseal after a pressure situation
- 50% higher flowrate than the LPRD for increased tank protection during an over pressure event (12600 SCFM)
- Utilizes the same bolt pattern as the LPRD and industry standards enabling direct replacement
- Standard integrated directional shield with 8" diameter outlet to maximize flow rate and control hot oil and gas discharge
- Reduces risk to environment, surrounding assets, and people in the immediate area when used in conjunction with piping kits
- Variety of optional piping kits, flanges, and animal screens are available from Qualitrol to divert hot oil
Specifications
Brand
Alarm Switch Enclosure
- Die Cast Aluminum with Polyester Powder Coats
Ambient Operating Temperature
- -40° to 80° C (-40° to 176° F), Tank Fluid at 30° C (86° F)
Base Flange Material
- Cast Aluminum, ASA 70 Light Gray Polyester Powder Coat
Dielectric Strength
- 2000 Vac, 50/60 Hz for 1 Minute
Flow Rate
- 12,600 Standard feet³ Per Minute at psi: 15 (kPa: 103.4, bar: 1.034) with 10 psi Operating Pressure
Gasket Material
- Nitrile (Standard)
- Viton
Indicator Material
- Semaphore: Epoxy/Polyester Painted Aluminum
- Semaphore: Nylon
Recommended Tank Opening
- 6.75” (171.5 mm)
Ring Material
- Cast Aluminum, Chromate Conversion Coated
Salt Spray Testing
- Materials & Coating withstand 1000 Hours of Salt Spray Testing Per ASTM B: 117 with No Appreciable Loss of Strength in Any Structural Members
Shield / Hardware Material
- Stainless Steel
Shield Turning Radius
- 12.73” (323.3 mm)
Spring Material
- ASTM A229 Oil-Tempered Spring Wire, Epoxy/Polyester Painted
Switch Enclosure
- IP54
Switch Rating
- DPDT: 0.25 A at 250 Vdc, Non-Inductive
- DPDT: 0.5 A at 125 Vdc, Non-Inductive
- DPDT: 10 A at 125/250 Vac (Standard)
- High DC (SPDT Only): 10 A at 125 Vdc
Valve Material
- Stainless Steel, Sealing Areas Lubricated with Silicone-based Lubricant