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公开(公告)号:US5930099A
公开(公告)日:1999-07-27
申请号:US108034
申请日:1998-06-30
申请人: Andrew James Legro , Martin Baier , David D. Shipp
发明人: Andrew James Legro , Martin Baier , David D. Shipp
CPC分类号: E21B43/128 , E21B47/122 , H02H9/08 , H02H9/06
摘要: A grounding arrangement for a normally ungrounded multi-phase powerline system, which also carries dc information signals. A resistance and a spark gap device are provided in a path between system neutral and a ground. Upon the occurrence of a predetermined fault condition the spark gap device will conduct, and if the voltage developed across the resistance is of a predetermined value, a current bypass path is established around the spark gap device after a predetermined time delay.
摘要翻译: 一个通常不接地的多相电力线系统的接地装置,它还承载直流信息信号。 电阻和火花隙装置设置在系统中性点和地面之间的路径中。 在发生预定的故障状态时,火花隙装置将导通,并且如果在电阻上产生的电压是预定值,则在预定时间延迟之后,在火花隙装置周围建立电流旁路。