Product Name: Portable TIG/MMA Welding Machine D Ws-250A Model NO.: DWS-250A Electric Current: Inverter Frequency Range: Low Frequency Control: Automatic Shielding Gas: Argon Gas Cooling Way: Air Cooling Product Type: Dws-315 Input Power Source: 2p/220V,50Hz Rated Input Capacity: 6.3kVA Inverting Frequency: 20kHz No-Load Voltage: 55V Duly Cycle: 60% Currnet Range: 0-250A Efficiency: 90% Insulation Class: F Dimensions: 370x155X240mm Weight: 6kg Trademark: Noah Transport Package: Carton Packing Specification: 370x155X240mm Origin: Qingdao HS Code: 8515390000 Product Description Character of productMiniaturization design,simple operation,preset the welding current accurately beforehand.220V single phase and 380v three-phase power source can be used,and the circuit can identify automatically.Tungsten argon and manual arc welding machine can all be used either.It can use acidity,alkaline,cellulose,stainless steel ,cast iron and all grades of electrode.Efficient,energy-saving and environmental protection;save electricity over 60% more than AC welding machine .Weld steadily with 100m welding wire.Main Technical ParameteProduct TypeDWS-250AInput Power Source2P/220V,50HZRated Input Capacity6.3KVAInverting Frequency20KHzNo-Load Voltage55VDuly Cycle60%Current Range0-250AEfficiency90%Insulation ClassFDimensions370x155X240mmWeight6kgTen must-choose reasonsAll the key components are imported from world-renowned brands, so as to ensure that the products will not fail to meet the design requirements due to device reasons, and ensure that the product design life can reach more than 10 years.The core control chip adopts the latest pulse width modulator, double closed-loop feedback control, more excellent static and dynamic characteristics, ensure more stable output, can meet the requirements of manufacturing welding refinement, and power factor up to 0.98, more environmental protection and energy saving.The machine has a short circuit protection function and a unique standby working circuit, no damage to welding machine when no load, life can be extended more than twice.The whole machine adopts full-bridge inverter main circuit structure, which has super anti-overload capacity and superior welding process, even though the output welding wire is 100 meters long ,itcan still maintain stable welding.In order to avoid the danger of electric shock caused by arc voltage under damp environment, the whole machine is designed according to the standard of three-proof, and adopts the function of anti-electric shock with patented technology.All models adopt high frequency transformer with ultramicro magnetic core, which can effectively reduce the loss of high frequency transformer. The magnetic core is packaged with epoxy resin, with high mechanical strength, no hysteresis and expansion, and can withstand strong vibration, reduce the volume of switching power supply, and improve the reliability of the machine.It hasvoltage fluctuation compensation circuit, could be highly adaptable to power supply network fluctuations.There will be small impact on the grid,andlong service life.The machine adopts the current and voltage double waveform control circuit, which can accurately control the current in the time range of microseconds. The improvement of control precision greatly improves the welding cutting accuracy, minimizes welding spatter, and makes welding seam forming more beautiful.All products adopt digital display, current and voltage can be preset, easier to operate, more intuitive to see real-time welding data, more accurate for the adjustment of welding parameters.Adopt patented ventilation and heat dissipation method to keep core components working together at the same temperature to prevent overload of some devices; At the same time, the unique IGBT self-locking protection circuit is adopted to ensure that the components are basically not damaged and increase the reliability of the product.Our Services1. Your inquiry related to our product &price will be replied within 24 hours2. Well-trained &experienced staff are to answer all your inquiries in English3. Working time: 8: 00am ~17: 30pm, Monday to Saturday. (UTC+8)4. Customized solution &perfect after-sale service5. For large order, engineer can be sent to your country for on-site mainternace instructions.6. Our advantage: 1. Competitive price 2. Good quality 3. Timely delivery 4. New model launch yearly 5. Own manufacturing 6. Own quality control7.100% QC inspection before shipping.8. OEM is available.FAQ1. MOQ:Generally if you choose the different products, our minimum order qty. Also will be different.2. Payment:Acturally, payment would be preferred: Normally we choose in T/T, usually is 30% deposit and pay the balance before shipment. L/COur 100% Promise1.24 hours online service.2. Each of our products has a single number and traceability.3. The above product photos are coming from main production.4. Thanks and the first cooperation to be expected.For more information, please visit our website. Welcome to visit our factory. We are sincerely want to start business with each customer. Enquiry are welcomed.