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US 12,266,909 B2Granted
Motor control center (MCC) units with retractable power connector and interlocks including a power connector position interlock
AssigneeEaton Intelligent Power Limited
InventorsDaniel Boyd Kroushl, Alfred Gregory Beard, Edgar Yee
Life of this patent
Estimating the term…
Abstract
Motor control centers have units or buckets with an extendable/retractable power connection (stab) assembly and one or more operating lever interlocks that include a unit latch to latch to a cabinet and a power connection position interlock that blocks the handle of the units or buckets based on position of the power connection assembly, optionally also including a shutter cam that slides a shutter right and left.
Claims20
An interlock system for a motor control center unit, comprising:
- a unit housing having an operator handle;
- a power connection assembly mounted within the unit housing, the power connection assembly including a set of power connectors configured to establish an electrical connection between the motor control center unit and a power bus, and a power connection position interlock operatively coupled to the power connectors;
- and
- a unit latch interlock mounted within the unit housing and configured to engage with a cabinet of the motor control center unit,
- wherein the power connection position interlock and the unit latch interlock are independently operable and are configured to interact with the operator handle to control movement of the operator handle based on both an engagement state of the unit latch interlock and a position of the power connection assembly.
2 more elements
A bucket assembly for a motor control center, comprising:
- a bucket housing having an operator handle;
- a power connection assembly mounted within the bucket housing, the power connection assembly including a set of power connectors configured to establish an electrical connection between the bucket assembly and a power bus of the motor control center, and a power connection position interlock operatively coupled to the power connectors;
- and
- a unit latch interlock mounted within the bucket housing and configured to engage with a cabinet of the motor control center,
- wherein the power connection position interlock and the unit latch interlock are independently operable and are configured to interact with the operator handle to control movement of the operator handle based on both an engagement state of the unit latch interlock and a position of the power connection assembly.
2 more elements
Dependencies are inferred from the claim text.