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五十头硅整流焊机是一台可供50名电焊工同时使用的多头电焊设备。这台设备是沪东造船厂为适应生产发展的需要,将一台750千伏安旧变压器改装而成的。该变压器的初级为6600伏,次级为50伏。改装后,次级输出电压经三相桥式整流器整流,输出68伏直流电压。由于采用三相桥式整流,所以输出电压的波形近似于直流电焊机的电压波形。在电路中,串联有负载电阻箱,以获得陡
Fifty silicon rectifier welders are a multi-head welding machine for 50 welders at the same time. This equipment is Hudong Shipyard in order to meet the needs of the development of production, will be a 750-kilovolt transformer from the old converted. The transformer has a primary of 6600 volts and a secondary of 50 volts. After modification, the secondary output voltage is rectified by a three-phase bridge rectifier and outputs 68 VDC. As a result of three-phase bridge rectifier, so the output voltage waveform similar to DC voltage welder voltage waveform. In the circuit, a series of load resistance boxes are connected in order to obtain steepness