Henan New Electric Power Co., Ltd deals in the R&D, manufacturing and sales of various medium, high and Low Voltage Transformers and Transformer Accessories. The transformer accessories mainly include Buchholz Relay, Tap Changer , oil level gauge, butterfly valve, Moisture Absorber, pressure reducing valve, Cross Flow Cooling Fan, Bimetal Thermometer, Epoxy Resin Insulator, etc. New and old customers are welcome to purchase and customize.
Buchholz Relay
Gas Relay is a main protection device for internal faults of Oil Immersed Transformer and oil immersed on load tap changer. The gas relay (gas relay) is installed on the connecting pipeline between the transformer and the oil conservator. When the internal fault of the transformer causes oil decomposition to produce gas or oil flow impulse, the contact of the gas relay will act to connect the specified control circuit, and send a signal in time or automatically cut off the transformer.
Maintenance 1. The relay shall undergo appearance inspection and reliability inspection of signal circuit and trip circuit once a year. 2.The relay in operation shall be uncovered once every two years for internal structure and action reliability inspection. 3. The power frequency withstand voltage test shall be carried out for the operated relay every five years.
Model No.:QJ Series
Brand Name:TNNPI
Principle:Electromagnetic Relay
Use:Auto, Protective
Size:Miniature
Protection features:Sealed
Contact load:Low Power
Voltage:220v
Product use:Oil immersed transformer
Shell material:aluminium / iron
working temperature:-30℃-+95℃
Nominal diameter:25/40/50/80CM
Connection form:Flange
Product characteristics:Isolation seal
Number of power supply phases:Polyphase
Customized:Support