Resistance welding transformer consists of transformer base and rectifier device.The transformer secondary and rectifier components are made of T2 copper and silver plating.Transformer base is made of high quality ultra-thin silicon steel sheet,vacuum infusion with high thermal conductivity epoxy resin.Excellent performance,good electrical insulation.We design and produce 75KVA-500KVA resistance welding transformer.It’s medium frequency dc transformer which be used for resistance welding equipments.Accept make to order according to your welding machine.
Principle of Medium Frequency Welding Transformer:
Firstly,three phase AC is rectified to DC by rectifier.and then inverter the DC into a new AC through a bridge circuit composed of IGBTs.Input to Mid-frequency welding transformer,the secondary of the transformer is equipped with a rectifier diode to convert the welding current to DC.Since the output current of MF transformer is DC,it is easier to control the welding process and complete welding more rapidly and stably.The welding frequency is 1000Hz,Therefore,its current regulation is faster and more accurate,relative to 50Hz power supply.
MF-500KVA Resistance Welding Transformer Technical Specification:
| Power | 500KVA |
| Primary Voltage | 500V,1000Hz |
| No-load Secondary Voltage | 12V |
| ED=20% | 40KA,520KVA |
| ED=50% | 32KA,410KVA |
| ED=100% | 20KA,260KVA |
| Insulation Class | F |
| Turns Ratio | 38:1 |
| Maximum Short Circuit Current | 6KA |
| Cooling Water | ≥24L/min,<30degree |
| Diode type | ZE12000A 200V*4 |
| Weight | 60KG |
| Standard | GB15575-2008 |
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1,All resistance welding transformers accept customized electrode interface and transformer size according to client’s requirements.
2,All welding transformer can use in parallel,and supply suitable laminated copper shunts
3,All transformer can adjust their parameters according to client’s requirements.(transformer’s size maybe different)
