HF processing (High-Frequency processing)
Automation and monitoring in electric power industry
Spare parts for high-voltage equipments
Instruments and devices
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Equipment for SF6 (Sulfur Hexafluoride)
Railway equipment
Telecommunication equipment
Technological equipment
Original product with a 15% discount
- Main
- Spare parts for high-voltage equipments
- Transformer protection relays
- Flow relay RF-URF-25/10I
аrt.33
Designed to replace the URF-25/10 gas relay (manufactured by EMB, Germany) or RST-25 (manufactured by ORGRES, Russia) in oil-filled transformers. Provides protection of equipment from internal damage by responding to gas release or sudden movement of oil inside the transformer tank. Manufactured by: ANILAG INDUSTRIA & COMERCIO LTDA (South America)
- Description
- Technical specifications
- Documents (certificates)
Flow Relays are used in power transformers insulated in oil which have an expansion tank for the changeover switch under load. Its function is to detect the abnormal oil flow between the changeover switch and its expansion tank. The Relay is installed in the pipeline between the changeover switch tank and the expansion tank. When an oil flow occurs from the changeover switch towards the expansion tank and its speed reaches the setting in the relay, the relay should turn on a shutdown electrical contact, preventing damages to occur in the equipment.
Case material: Aluminum casting
-Float material: nitrophenol
-Contact type: magnetic reed switch
-Seismic resistance
-Contact switching resistance:
-Switching current AC/DC: 3 A
-Voltage: up to 1500 V AC/DC
-Switching power max. 120 VA
-2 normally open contacts
-Contact response
-Disconnection: at flow velocity of 0.9; 1.2 or 1.5 m/s ±15%
-Seal material: nitrile
-Test voltage of electrical contacts: 2 kV
50/60 Hz for 1 min
-Box protection rating: IP 68
-Tightness test: Insulating oil test
temperature 85 degrees C at a pressure of 0.2 MPa for 3 h
-Weight 3.9 kg
-Dimensional tolerance ± 1 mm
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