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China, Chinese Mf Welding Transformer Resistance Welding Machine Medium Frequency Welding Transformers Mf225 350kVA 20% Duty Cycle1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Welding EquipmentResistance WelderMedium Frequency Transformer1000Hz Transformer
Sailing Commercial (Tianjin) Co., Ltd.
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Product Description Mf Welding Transformer Resistance Welding Machine Medium Frequency Welding Transformers MF225 350kva 20% Duty Cycle Product DescriptionBrief introduction Medium-frequency (MF) transformers are a result of recent advances in resistance welding technology. They arepowered by a transistor inverter, supplying square wave AC 500 V @ 1000 Hz which is converted by the MF transformer to a low voltage high current AC.This low voltage AC current is rectified to DC by a diode block built into the transformer.The higher operating frequency of an MF system allows efficient energy conversion using a smaller and lighter transformer.Other benefits with MF transformers used in portable and robotic welding guns are:The reactance of the welding loop only limits the upslope and down slope of the welding current.While the peak welding current in limited only by the welding loop's resistance. The net result is again smaller transformer, especially when welding with large throat, high-impedance guns.MF welding is less demanding on the plant power system.The MF inverter draws balanced line current from all 3 phases and operates at a high power factor (0.9).With MF transformers the peak welding current almost equals its RMS value, which helps to obtain quality welds with no splash and constantstrength even at lower pressure.The high frequency permits much faster - 1000 times per second - process control, which again results in better weld quality. Application For all kinds of intermediate frequency, power frequency resistance welding machine.Such as automobile welding clamp,seam welding machine, mesh welding machine and so on. Product Parameters Technical parameter TYPE MF225Primary nominal voltageV500FrequencyHz1000Nominal power at 20%EDkVA350Nominal power at 50%EDkVA225Nominal power at 100%EDkVA170Secondary voltageV13Permanent DC current 100%A13000Short circuit currentKA55Turns ratioN1 / N238:1Weightkg40Temperatur switch 2 x 150 °C, 1 x 70 °C Temperature switch Insulation class F (155 °C)Current measuring coil 150mV/KA ±3%Sizemm171.5X151X450Cooling water < 30°CL/ min12X2Pressure drop Mpa<0.1 Load diagramDrawing CertificationsCE certificateCompany Certificate Factory environment display
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