Motor starter arrangement with soft start electronic control
OwnerKevin R. Williamsinventor
Life of this patent
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Abstract
An improved motor starter assembly is provided on a frame and having an external profile which matches that or is within that of a prior motor starter is disclosed. The improved motor starter assembly provides a soft start circuit within the profile. Retrofitting of prior art motor starters is accomplished by moving the power fuses and related hardware of an existing medium voltage (2.4 Kv to 7.2 Kv) and installing the new soft start circuit on the frame of the existing motor starter. The retrofitted arrangement mounts the motor fuses horizontally and the vacuum contactors vertically in an arrangement to provide enough space within the external profile to mount the soft start circuit arrangement.
Claims7
An improved motor starter assembly which includes a frame which can be moved inwardly into a plugged state into a predefined dimensioned space through a predefined dimensioned opening of a power distribution panel or moved outwardly to an unplugged state from said predefined space of said power distribution panel,
- said assembly having a first plug and a second plug which are separated by a predetermined distance so that when said starter assembly is moved into said predefined space of said panel in said plugged relation, said first plug mates with a power bus plug within said power distribution panel and said second plug mates with a motor bus plug within said power distribution panel,
- said motor starter assembly having electrical components mounted on said frame and connected in an electrical path between said first plug and said second plug which includes a fuse and a switch,
- said frame and electrical components being mounted within a space defined by a predetermined external profile having height, width, and depth dimensions which allow said motor starter assembly to be moved into said predefined dimensioned space through said predefined dimensional opening and into said pre-dimensioned space of said power distribution panel,
- comprising
- a soft start motor starter circuit arrangement connected in said electrical path having electrical components which are mounted within said predetermined external profile.
Dependencies are inferred from the claim text.