Abstract:
The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate.
Abstract:
A switch unit 200 for a voltage circuit breaker that includes a first switch contact 202a and a second switch contact 202b. The first switch contact 202a is movable between a first position in which the first switch contact 202a contacts the second switch contact and a second position in which the first and second switch contacts 202a, 202b are separated from each other. Further, a positioning element to position an arc chute 100 on the switch unit. The arc chute 100 includes at least two stacks 102, 106 of a plurality of substantially parallel metal plates 104, 104a, 104b, . . . , 104n, 108, 108a, 108b, . . . , 108n. The switch unit includes a first connection device 120, 230a capable to electrically connect the first switch contact 202a to a predetermined metal plate 104a selected of the most proximal 25% metal plates of the first stack 102. A second connection device 122a 122b, 230b capable to electrically connect the second switch contact to a predetermined metal plate 108a selected of the most proximal 25% metal plates of the second stack 106.
Abstract:
The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate.
Abstract:
A switch unit 200 for a voltage circuit breaker that includes a first switch contact 202a and a second switch contact 202b. The first switch contact 202a is movable between a first position in which the first switch contact 202a contacts the second switch contact and a second position in which the first and second switch contacts 202a, 202b are separated from each other. Further, a positioning element to position an arc chute 100 on the switch unit. The arc chute 100 includes at least two stacks 102, 106 of a plurality of substantially parallel metal plates 104, 104a, 104b, . . . , 104n, 108, 108a, 108b, . . . , 108n. The switch unit includes a first connection device 120, 230a capable to electrically connect the first switch contact 202a to a predetermined metal plate 104a selected of the most proximal 25% metal plates of the first stack 102. A second connection device 122a 122b, 230b capable to electrically connect the second switch contact to a predetermined metal plate 108a selected of the most proximal 25% metal plates of the second stack 106.