摘要:
The invention relates to a power contactor (1) which has a first electric contact (3), a second electric contact (4), and a switching element (5) which can assume an open position and a closed position. In the closed position, the switching element (5) contacts the first electric contact (3) and the second electric contact (4) together, and when the switching element (5) is in the open position, the first electric contact (4) and the second electric contact (4) are insulated from each other. The power contactor also has a current sensor (2) which is integrated into the power contactor (1) and which is designed to detect the current strength of a current flowing through the power contactor (1). The invention further relates to a method for checking the function of a power contactor (1).
摘要:
The contact device (30) for the electrical switch comprises a first connection element (31), a second connection element (32) and a movable contact bridge (33). Furthermore, the contact device (30) comprises at least two magnets for extinguishing arcs which arise during the switching of the electrical switch. The magnets generate a magnetic field in a first region which comprises at least one first contact region and one second contact region, in which contact regions, with the electrical switch in a closed switching position, the first connection element (31) and, respectively, the second connection element (32) are in contact with the contact bridge (33). In addition, the contact device (30) comprises one or more deflection elements which are arranged and designed to distort the magnetic field in such a way that a first arc which forms between the first connection element (31) and the contact bridge (33) and a second arc which forms between the second connection element (32) and the contact bridge (33) are forced into different directions, which extend pointing away from one another, independently of a respective flow direction in the connection elements (31, 32).
摘要:
The invention relates to a surge arrester (1) having a gas-tight discharge space (3) formed by at least one insulating body (5) and two electrodes (7, 13), wherein the electrodes (7, 13) extend into the discharge space (3) and are at an electrode distance (L) from each other and at a wall distance (a) from the insulating body inner wall (23), the electrode distance (L) being equal to double the wall distance (a) or less than double the wall distance (a).
摘要:
The invention relates to a method for producing a multiplicity of surge arresters (7) in an assembly. In a first step, the method comprises providing a ceramic carrier (1) with a multiplicity of holes (4) and providing two electrode bodies (2). In a further step, the method comprises joining the ceramic carrier (1) and the two electrode bodies (2) together in a gas atmosphere to form a main body (3), wherein the ceramic carrier (1) is arranged between the electrode bodies (3). In a further step, the method comprises soldering the electrode bodies (2) to the ceramic carrier (1). Then, the main body (3) is separated into a multiplicity of gas-filled surge arresters (7). Furthermore, the invention relates to a gas-filled surge arrester (7), which has a height of at most 2 mm and electrode surface areas (11) of at most 1.2 x 1.2 mm 2 .