CIRCUITS OF SUPPLY SOURCES FOR THREE-PHASE ARC WELDING WITH A CONSUMABLE ELECTRODE.

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Fridman, L.N.
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| 1600年 / 19期
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It is shown that the transformers with a flat characteristic currently employed for supplying a three-phase arc in submerged-arc welding do not provide continuous burning of the three-phase arc, and this is the cause of arc extinctions. The employment of a power source for a three-phase arc with a drooping characteristic completely eliminates arc extinctions. Optimum three-phase transformer circuit is found to be a circuit with magnetic switching.
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