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Electrical Installation For An Electric Trace Heating System For A Metal Pipe For Transporting Fluids And Electric Trace Heating Method For Such A Pipe
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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机译:用于输送流体的金属管的电伴热系统的电气安装以及这种管的电伴热方法
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摘要
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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