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US 2018/0294628 A1Published application
Motor control center units with retractable stabs and interlocks
AssigneeEaton Intelligent Power Limited
InventorsStephen William Oneufer, Robert Allan Morris, Daniel Boyd Kroushl
Life of this patent
Estimating the term…
Abstract
Motor control centers have units or buckets with one or more sliding shutters that controllably block access to a stab isolation port based on position of the operator disconnect handle using attached cams that slide the shutter right and left. A front panel of the unit or bucket may also be configured to pivot out about a long axis associated with a bottom long side thereof.
Claims20
A bucket assembly, comprising:
- a unit housing having laterally spaced apart right and left sidewalls;
- an operator handle coupled to the unit housing;
- an inwardly extending shaft in the unit housing coupled to the operator handle;
- an interlock member held in the unit housing, wherein the interlock member is configured to laterally extend and retract, wherein, when extended, the interlock member extends out an aperture in at least one of the right or left sidewall of the unit housing;
- and
- retractable power stabs held by the unit housing, wherein the retractable power stabs are configured to be able to extend out of a rear of the unit housing when in an extended position.
3 more elements
A motor control center (MCC), comprising:
- a cabinet with first and second sidewalls defining an enclosure with a plurality of compartments, the compartments configured to removably receive a plurality of bucket assemblies, wherein at least one of the bucket assemblies comprises:
- a unit housing having laterally spaced apart right and left sidewalls;
- an operator handle coupled to the unit housing;
- an inwardly extending shaft in the unit housing coupled to the operator handle;
- an interlock member configured to laterally extend and retract, wherein, when extended the interlock member extends out an aperture in at least one of the right or left sidewall of the unit housing;
- and
- retractable power stabs held by the unit housing, wherein the retractable power stabs are configured to be able to extend out of a rear of the unit housing to engage one or more bus bars when in an extended position.
4 more elements
Dependencies are inferred from the claim text.