System and method for an AC powered downhole gauge
Borehole instruments are powered by AC instrument power transmitted on all three phases of a power cable concurrently carrying three phase motor power, the instrument power transmitted at a multiple of the motor power frequency and having a corresponding fraction of the motor power voltage, and rece...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
24.03.2010
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Subjects | |
Online Access | Get full text |
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Summary: | Borehole instruments are powered by AC instrument power transmitted on all three phases of a power cable concurrently carrying three phase motor power, the instrument power transmitted at a multiple of the motor power frequency and having a corresponding fraction of the motor power voltage, and received via a capacitive coupling sufficient to withstand high-voltage cable insulation testing. The phase-to-neutral motor power provides approximately the same power level to the borehole instruments if a phase shorts to ground. |
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Bibliography: | Application Number: GB20100000217 |