Electrical tester

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9923377
SERIAL NO

14907494

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electrical equipment cabinet has a standby battery to supply current when a mains connection is not available. In normal operation the battery is maintained charged by the mains supply. In order to test the condition of the battery, a measuring system is arranged to operation in co-operation with a test of a residual current detection device, which temporarily disconnects the mains supply, thus measuring the condition of the battery, when under load.

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First Claim

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Family

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Patent Owner(s)

  • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Warren, John London, GB 28 143

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