Electrical installation for an electric trace heating system for a metal pipe for transporting fluids and electric trace heating method for such a pipe
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United States of America Patent
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Jul 7, 2020
Grant Date -
May 2, 2019
app pub date -
Feb 7, 2017
filing date -
Apr 18, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electrical installation for an electrical system for trace heating a fluid transport pipe (8) made of metal, at least one polyphase circuit having three main electric cables (6-1, 6-4, and 6-7) in a star connection, and one additional electric cable (6-2, 6-3, 6-5, 6-6, 6-8, and 6-9), the main cables and the additional cable positioned around the pipe and connected at the pipeline end to a common connection ring (10) forming a point of zero electric potential, and detector for detecting a failure, if any, of the polyphase circuit to identify a failed main cable in order to replace it with the additional cable.
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