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公开(公告)号：US09999101B2
公开(公告)日：2018-06-12
申请号：US14440571
申请日：2013-11-07
CPC分类号： H05B6/28 , F27D2021/0057 , G01R31/025 , H05B6/067
摘要： A method and an apparatus for automatically detecting the intactness of ground electrodes in the bath of an induction furnace are described. According to the method a low DC or AC current is applied to an additional insulated electrode extending through the furnace bottom and being in connection with the melt. After melting of the charge this current is measured and compared with a reference value. If the magnitude of the current drops below the reference value an alarm signal is generated. Furthermore, methods and devices for localizing a ground fault are described. By this, the security of the operation of an induction furnace is improved.
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2.发明申请公开(公告)号：US20150289322A1
公开(公告)日：2015-10-08
申请号：US14440571
申请日：2013-11-07
CPC分类号： H05B6/28 , F27D2021/0057 , G01R31/025 , H05B6/067
摘要： A method and an apparatus for automatically detecting the intactness of ground electrodes in the bath of an induction furnace are described. According to the method a low DC or AC current is applied to an additional insulated electrode extending through the furnace bottom and being in connection with the melt. After melting of the charge this current is measured and compared with a reference value. If the magnitude of the current drops below the reference value an alarm signal is generated. Furthermore, methods and devices for localizing a ground fault are described. By this, the security of the operation of an induction furnace is improved.
摘要翻译： 描述了一种用于自动检测感应炉浴中接地电极的完整性的方法和装置。 根据该方法，将低直流或交流电流施加到延伸穿过炉底并与熔体相连的附加绝缘电极。 在电荷熔化后，测量该电流并与参考值进行比较。 如果电流的大小下降到参考值以下，则产生报警信号。 此外，描述了用于定位接地故障的方法和装置。 由此，提高了感应炉的操作的安全性。
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