Electrical system having withdrawable electrical apparatus and shutter assembly with ramped engagement surfaces

A shutter assembly for an electrical system, the electrical system being structured to cooperate with at least one withdrawable electric apparatus and a number of electrical bus members, at least some of the number of electrical bus members being structured to include a primary contact, the withdrawable electric apparatus being structured to include a number of protruding structures, the withdrawable electric apparatus being structured to be coupled with the primary contact of an electrical bus member of the number of electrical bus members to electrically connect together the at least one withdrawable electric apparatus and the electrical bus members, the shutter assembly comprising:

• a support apparatus structured to be situated adjacent at least a portion of the primary contact of a bus member of the number of bus members;
• and
• a cover apparatus disposed on the support apparatus and being movable between a first position and a second position, the cover apparatus in the first position being structured to overlie at least a portion of the primary contact, the cover apparatus in the second position being structured to be offset from the primary contact, the cover apparatus comprising at least a first cover member comprising an engagement structure having a ramped engagement surface that is structured to be engaged by the protruding structure of the withdrawable electric apparatus to translate the cover apparatus between the first and second positions;
• wherein the support apparatus comprises a biasing element which biases the at least first cover member toward the first position;
• and
• wherein the support apparatus further comprises a track apparatus that comprises a pair of track elements oriented substantially parallel to one another, the at least first cover member further comprising a pair of mounting elements that cooperate with the pair of track elements to slidably mount the at least first cover member to the pair of track elements.

A shutter assembly for an electrical system, the electrical system being structured to cooperate with at least one withdrawable electric apparatus and a number of electrical bus members, at least some of the number of electrical bus members being structured to include a primary contact, the withdrawable electric apparatus being structured to include a number of protruding structures, the withdrawable electric apparatus being structured to be coupled with the primary contact of an electrical bus member of the number of electrical bus members to electrically connect together the at least one withdrawable electric apparatus and the electrical bus members, the shutter assembly comprising:

• a support apparatus comprising an elongated structure and being structured to be situated adjacent at least a portion of the primary contact of a bus member of the number of bus members;
• and
• a cover apparatus disposed on the support apparatus and being movable between a first position and a second position, the cover apparatus in the first position being structured to overlie at least a portion of the primary contact, the cover apparatus in the second position being structured to be offset from the primary contact, the cover apparatus comprising at least a first cover member comprising an engagement structure having a ramped engagement surface that is structured to be engaged by the protruding structure of the withdrawable electric apparatus to translate the cover apparatus on the elongated structure between the first and second positions;
• and
• wherein the cover apparatus in the first position is structured to overlie at least a portion of each of a plurality of primary contacts of a plurality of electrical bus members of the number of electrical bus members, the plurality of primary contacts being aligned along an axis, the support apparatus being movable between the first and second positions along a direction oblique to the axis.

An electrical system structured to cooperate with at least one withdrawable electric apparatus and a number of electrical bus members, at least some of the number of electrical bus members being structured to include a primary contact, the withdrawable electric apparatus being structured to include a number of protruding structures, the withdrawable electric apparatus being structured to be coupled with the primary contact of an electrical bus member of the number of electrical bus members to electrically connect together the at least one withdrawable electric apparatus and the electrical bus members, the electrical system comprising:

• a switchgear enclosure;
• a shutter assembly comprising a support apparatus and a cover apparatus;
• the support apparatus comprising an elongated structure and being structured to be situated adjacent at least a portion of the primary contact of a bus member of the number of bus members;
• and
• the cover apparatus disposed on the support apparatus and being movable between a first position and a second position, the cover apparatus in the first position being structured to overlie at least a portion of the primary contact, the cover apparatus in the second position being structured to be offset from the primary contact, the cover apparatus comprising at least a first cover member comprising an engagement structure having a ramped engagement surface that is structured to be engaged by the protruding structure of the withdrawable electric apparatus to translate the cover apparatus on the elongated structure between the first and second positions.

An electrical system structured to cooperate with at least one withdrawable electric apparatus and a number of electrical bus members, at least some of the number of electrical bus members being structured to include a primary contact, the withdrawable electric apparatus being structured to include a number of protruding structures, the withdrawable electric apparatus being structured to be coupled with the primary contact of an electrical bus member of the number of electrical bus members to electrically connect together the at least one withdrawable electric apparatus and the electrical bus members, the electrical system comprising:

• a switchgear enclosure;
• a shutter assembly comprising a support apparatus and a cover apparatus;
• the support apparatus structured to be situated adjacent at least a portion of the primary contact of a bus member of the number of bus members;
• the cover apparatus disposed on the support apparatus and being movable between a first position and a second position, the cover apparatus in the first position being structured to overlie at least a portion of the primary contact, the cover apparatus in the second position being structured to be offset from the primary contact, the cover apparatus comprising at least a first cover member comprising an engagement structure having a ramped engagement surface that is structured to be engaged by the protruding structure of the withdrawable electric apparatus to move the cover apparatus between the first and second positions;
• wherein the support apparatus comprises a biasing element which biases the at least first cover member toward the first position;
• and
• wherein the support apparatus further comprises a track apparatus that comprises a pair of track elements oriented substantially parallel to one another, the at least first cover member further comprising a pair of mounting elements that cooperate with the pair of track elements to slidably mount the at least first cover member to the pair of track elements.

An electrical system structured to cooperate with at least one withdrawable electric apparatus and a number of electrical bus members, at least some of the number of electrical bus members being structured to include a primary contact, the withdrawable electric apparatus being structured to include a number of protruding structures, the withdrawable electric apparatus being structured to be coupled with the primary contact of an electrical bus member of the number of electrical bus members to electrically connect together the at least one withdrawable electric apparatus and the electrical bus members, the electrical system comprising:

• a switchgear enclosure;
• a shutter assembly comprising a support apparatus and a cover apparatus;
• the support apparatus comprising an elongated structure and being structured to be situated adjacent at least a portion of the primary contact of a bus member of the number of bus members;
• the cover apparatus disposed on the support apparatus and being movable between a first position and a second position, the cover apparatus in the first position being structured to overlie at least a portion of the primary contact, the cover apparatus in the second position being structured to be offset from the primary contact, the cover apparatus comprising at least a first cover member comprising an engagement structure having a ramped engagement surface that is structured to be engaged by the protruding structure of the withdrawable electric apparatus to move the cover apparatus on the elongated structure between the first and second positions;
• and
• wherein the cover apparatus in the first position is structured to overlie at least a portion of each of a plurality of primary contacts of a plurality of electrical bus members of the number of electrical bus members, the plurality of primary contacts being aligned along an axis, the support apparatus being movable between the first and second positions along a direction oblique to the axis.