Power grid protection via transformer neutral blocking systems and triggered phase disconnection

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11984720
APP PUB NO 20210075213A1
SERIAL NO

17100412

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Abstract

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A protection circuit is disclosed. The protection circuit includes a direct current (DC) blocking component electrically connected between a neutral of the transformer and a ground, and an overvoltage protection device electrically connected in parallel with the DC blocking component. The overvoltage protection device is constructed to repeatably and reliably provide overvoltage protection in response to a voltage at the transformer neutral above a threshold. The DC blocking component has an impedance below a predetermined value, thereby effectively grounding the neutral of the transformer. The DC blocking component is persistently maintained in connection to the transformer neutral.

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Patent Owner(s)

Patent OwnerAddress
TECHHOLD LLCMINNEAPOLIS MN 55416

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anderson, David Excelsior, US 391 11583
Anderson, George Champlin, US 38 727
Faxvog, Frederick R Medina, US 29 772
Fuchs, Greg River Falls, US 32 553
Jensen, Wallace Centerville, US 24 460

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