发明名称 Individual heating element power control for a furnace
摘要 During a heating process in a three-phase, electric furnace, power can be controlled by dividing the heating process into intervals and then controlling the average power generated during each of these intervals, and by individually controlling the power generated by each phase. The latter is accomplished without requiring access to a neutral wire.
申请公布号 US5870423(A) 申请公布日期 1999.02.09
申请号 US19960746141 申请日期 1996.11.06
申请人 SANDVIK AB 发明人 GUSTAVSSON, FRANK
分类号 H05B3/00;F27D11/02;F27D19/00;H05B3/62;(IPC1-7):H05B7/148 主分类号 H05B3/00
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