| 摘要 |
A technique for providing short circuit protection in electrical systems use d in hydrocarbon exploration and production and, more particularly, for such electrical systems comprising serially connected nodes, includes an apparatus and method. The apparatus, includes a power supply and a plurality of electrically serially connected applicatio n sensors downstream from the power supply. Each application sensor includes a sensing element; a nd a plurality of electronics associated with the sensing element. The electronics shut off upstream power to the downstream application sensors in the presence of a short circuit. The metho d includes serially supplying power to a downhole apparatus comprising a plurality of electrical ly serially connected downhole sensors; sensing, in series and upon receiving power from upstream, at each downhole sensor whether a downstream short circuit exists; and shutting off upstream power to the downstream downhole sensors in the presence of a short circuit.
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