A cabinet including a door, a fastener, and a latch bracket is provided. The fastener is extending at least partially through an aperture in the door. The latch bracket is located on an internal surface of a door frame to secure the door to the door frame. A retainer washer is disposed around the fastener and disposed between the latch bracket and the door in order to retain the fastener when in a disengaged position.

A sheet feeding apparatus includes an upper support portion formed integrally with a side plate and configured to support an electric circuit board; an upper opening portion formed in the side plate near the upper support portion; a lower support portion provided at a separate part mounted to the side plate and configured to support the electric circuit board; and a lower opening portion provided between the side plate and the separate part. All line segments having a length of 50 mm or less, among line segments extending from arbitrary points in a main body portion of a sheet cassette, through arbitrary points in the upper opening portion, to the electric circuit board, form an angle of 45° or more with respect to a vertical line, and the lower opening portion has a dimension of 5 mm or less or a width of 1 mm or less.

A sheet feeding apparatus includes an upper support portion formed integrally with a side plate and configured to support an electric circuit board; an upper opening portion formed in the side plate near the upper support portion; a lower support portion provided at a separate part mounted to the side plate and configured to support the electric circuit board; and a lower opening portion provided between the side plate and the separate part. All line segments having a length of 50 mm or less, among line segments extending from arbitrary points in a main body portion of a sheet cassette, through arbitrary points in the upper opening portion, to the electric circuit board, form an angle of 45° or more with respect to a vertical line, and the lower opening portion has a dimension of 5 mm or less or a width of 1 mm or less.

A gas leakage detection system 1 with high detection accuracy for a remaining gas amount and a gas leakage amount of an insulation gas 28 in a container 27 forming a electrical apparatus 2 is provided. The gas leakage detection system 1 includes: the electrical apparatus 2 including: the container 27 to which a power distribution apparatus 29 is fixed and in which the insulation gas 28 is contained; a plurality of divided spaces 21 in the container 28 divided in parallel with a ground; a plurality of temperature sensors 22 which detects temperature of the insulation gas 28 and which is positioned in the plurality of the divided spaces 22; and a pressure sensor 23 which detects a pressure in the container 27; and a monitor 3 which calculates the remaining gas amount Mg of the insulation gas 28 remaining in the container 27 based on the temperature Ta and Tb of the insulation gas 28 detected by the plurality of the temperature sensors 22 and the pressure Pg of the insulation gas 28 detected by the pressure sensor 23.

A gas leakage detection system 1 with high detection accuracy for a remaining gas amount and a gas leakage amount of an insulation gas 28 in a container 27 forming a electrical apparatus 2 is provided. The gas leakage detection system 1 includes: the electrical apparatus 2 including: the container 27 to which a power distribution apparatus 29 is fixed and in which the insulation gas 28 is contained; a plurality of divided spaces 21 in the container 28 divided in parallel with a ground; a plurality of temperature sensors 22 which detects temperature of the insulation gas 28 and which is positioned in the plurality of the divided spaces 22; and a pressure sensor 23 which detects a pressure in the container 27; and a monitor 3 which calculates the remaining gas amount Mg of the insulation gas 28 remaining in the container 27 based on the temperature Ta and Tb of the insulation gas 28 detected by the plurality of the temperature sensors 22 and the pressure Pg of the insulation gas 28 detected by the pressure sensor 23.

A locking system for an enclosure, including a control bracket mounted to a door of the enclosure and configured to slide in a longitudinal direction along a guide rod running through a pin bracket of the control bracket. The control bracket further includes a latching pin to secure the door of the enclosure. A handle mechanism has a push rod that causes the control bracket to slide along the longitudinal direction, also causing the latching pin to move into a position that secures the door.

A three phase switchgear or control gear includes: at least one compartment; a plurality of components for a first phase; a plurality of components for a second phase; and a plurality of components for a third phase. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase each include a main busbar, a three position linear or rotational movement disconnector switch, a single phase circuit breaker pole, and a cable connection. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase are housed in the at least one compartment.

A three phase switchgear or control gear includes: at least one compartment; a plurality of components for a first phase; a plurality of components for a second phase; and a plurality of components for a third phase. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase each include a main busbar, a three position linear or rotational movement disconnector switch, a single phase circuit breaker pole, and a cable connection. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase are housed in the at least one compartment.

The present disclosure relates to an arc ventilation system of a distributing board, and more particularly, to an arc ventilation system of a distributing board to minimize an arc flowing forward to prevent damage. In the arc ventilation system of a distributing board in which a plurality of compartments are provided, a first compartment accommodating an electric power device which can be drawn in or out, among the plurality of compartments, comprises an arc blocking part blocking a space between the electric power device and the first compartment at an operation position of the electric power device.

A low and medium voltage electrical enclosure comprising a supporting structure which defines an internal space delimited by walls forming one or more compartments housing one or more electrical apparatuses. At least one of said walls is provided with one or more venting openings that put into communication said internal space with the outside of said low voltage electrical enclosure; the venting openings are provided with a cover closing a corresponding venting opening in a first—closed—operating condition. The enclosure is provided with an actuating device adapted to open said cover in a second—open—operating condition in case of arc fault inside said internal space; said actuating device comprises an actuating mechanism having a Shape Memory Alloy-based (SMA-based) actuating element having a first dimension at first predetermined temperatures reversibly changeable into a second dimension at second predetermined temperatures. The reversible change of dimension of said SMA-based actuating element from said first dimension to said second dimension determines the reversible movement of said cover from said first—closed—operating condition to said second—open—operating condition, and vice-versa.