Coordinating installation and connection of a motor control center subunit having moveable line contacts
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United States of America Patent
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Dec 6, 2022
Grant Date -
N/A
app pub date -
Apr 6, 2021
filing date -
Jul 26, 2006
priority date (Note) -
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Abstract
A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control power thereto, in a particular order. Embodiments of the invention may prevent actuation of line contacts of the bucket, and shield the line contacts, until the bucket is fully installed in the motor control center. Other embodiments also prevent circuit breaker closure until the line contacts are engaged with a bus of the motor control center.
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