Bucket assemblies for motor control centers (MCC) with disconnect assemblies and related MCC cabinets and methods
AssigneeEaton Intelligent Power Limited
InventorsStephen W. Oneufer, Robert A. Morris, Daniel B. Kroushl
Life of this patent
Estimating the term…
Abstract
Circuit breakers with a rotary handle attached to an inwardly oriented shaft that connects to a gear assembly that translates rotational input to linear input also include a trip assist spring in communication with the rack gear so that, in operation, the trip assist spring applies a force to the operator slider and forces the handle to a consistent trip position.
Claims12
A Motor Control Center (MCC) cabinet with bucket units, the bucket units having a common size external rotary handle that each communicates with a respective internal disconnect assembly that engages a respective toggle or switch of an internal circuit breaker or a fused disconnect switch, wherein different ones of the bucket units can have different frame sizes associated with different amperage ratings, and wherein the rotary handle of each of the bucket units rotate 90 degrees between OFF and ON positions, and wherein the rotary handle of each of the bucket units have a common trip orientation,
- wherein the bucket units have first and second configurations, with the second configuration being larger than the first configuration, wherein the first configuration is associated with bucket units having frame sizes/amperage ratings in a range of about 125 A to about 250 A, and wherein the second configuration is associated with bucket units having frame sizes/amperage ratings above 250 A, including 400 A and 600 A.
A Motor Control Center (MCC) cabinet with bucket units, the bucket units having a common size external rotary handle that each communicates with a respective internal disconnect assembly that engages a respective toggle or switch of an internal circuit breaker or a fused disconnect switch, wherein different ones of the bucket units can have different frame sizes associated with different amperage ratings, and wherein the rotary handles all rotate 90 degrees between OFF and ON positions and have a common trip orientation,
- wherein at least one of the bucket units comprises the fused disconnect switch, wherein the disconnect assembly of the at least one bucket unit with the fused disconnect switch comprises a gear system having a rack gear attached to a disconnect slider that engages the fused disconnect switch, and
- wherein the disconnect slider of the at least one bucket unit with the fused disconnect switch moves vertically up and down in response to rotation of the handle, and wherein the handle is attached to a drive gear that is coupled to the rack gear.
A Motor Control Center (MCC) cabinet with bucket units, the bucket units each having at least one external rotary handle of a common size and each at least one external rotary handle communicates with a respective internal disconnect assembly that engages a respective toggle or switch of an internal circuit breaker or a fused disconnect switch, wherein different ones of the bucket units can have different frame sizes associated with different amperage ratings, and wherein each of the at least one rotary handle rotates 90 degrees between OFF and ON positions and have a common trip orientation,
- wherein at least one of the bucket units has dual side-by-side external rotary handles aligned in horizontal and vertical directions as the at least one rotary handle, with a load side facing outward and an incoming side between the dual rotary handles facing inward.
A Motor Control Center (MCC) cabinet with bucket units, the bucket units having a common size external rotary handle that each communicates with a respective internal disconnect assembly that engages a respective toggle or switch of an internal circuit breaker or a fused disconnect switch, wherein different ones of the bucket units can have different frame sizes associated with different amperage ratings, and wherein the rotary handle of each of the bucket units rotate 90 degrees between OFF and ON positions, and wherein the rotary handle of each of the bucket units have a common trip orientation,
- wherein the bucket units have a substantially common width irrespective of height and the height and/or frame size of the bucket units is provided in modular 6 inch increments in a range of about 6 inches to about 72 inches.
A Motor Control Center (MCC) cabinet with bucket units, the bucket units having a common size external rotary handle that each communicates with a respective internal disconnect assembly that engages a respective toggle or switch of an internal circuit breaker or a fused disconnect switch, wherein different ones of the bucket units can have different frame sizes associated with different amperage ratings, and wherein the rotary handle of each of the bucket units rotate 90 degrees between OFF and ON positions, and wherein the rotary handle of each of the bucket units have a common trip orientation,
- wherein the disconnect assembly of at least one of the bucket units comprises a slider that engages the toggle or the switch and moves vertically up and down in response to rotation of the rotary handle.
Dependencies are inferred from the claim text.