Power supply and measuring device for an intelligent electronic device
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United States of America Patent
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May 16, 2017
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app pub date -
Aug 1, 2012
filing date -
Aug 1, 2012
priority date (Note) -
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Abstract
The present invention relates to a power supply and measuring device for an electronic device (e.g. an IED), which is configured to provide supervision, control, protection, communication and/or monitoring functionalities for LV or MV circuits or apparatuses. The power supply device comprises a current transformer, which is operatively associated to a main power line. An input section of the power supply device comprises a burden regulating stage that is configured to regulate the equivalent electric load at the secondary winding of said current transformer. An output section of the power supply device provides a supply voltage suitable to feed said electronic device.
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