摘要:
A connecting device suitable for connecting a movable conducting terminal of a switching device to a stationary conducting terminal of a switchgear apparatus, comprises: - a support body suitable for being fastened to the movable conducting terminal; - a plier assembly projecting from the support body parallely to a first axis and delimiting a coupling cavity for receiving the stationary conducting element, the coupling cavity extending along the first axis and along a second axis orthogonal to the first axis, - insertion-contact-means having leading-surfaces configured for promoting a resilient deformation of the plier assembly upon a contacting-pushing-action of the stationary conducting terminal for enabling insertion of the latter into the coupling cavity, the leading-surfaces comprising zones sloping along planes which are parallel to the second axis and tilted with respect to the first axis, and further zones sloping along further planes which are tilted with respect to the second axis, so as to enable an insertion of the stationary conducting element into the coupling cavity along an insertion-direction which can be parallel or transversal to the first axis.
摘要:
A scalable earthing switch that incorporates a torsion spring (30) to effect rapid closure of the switch. The torsion spring is supported coaxially about a rotatable shaft (22) on which contact blades are mounted resulting in compact design. The blade contacts (18) are separated axially along the length of the shaft by one or more spacers (70). By using difference size spacers the distance between adjacent blade contacts can be changed and, thus, the earthing switch can be easily scaled for different applications. A latching (detent) mechanism (98,99) is provided for latching the switch in an open position.
摘要:
A switch device comprising a bus bar (10), and a switch knife (9), wherein the knife (9) is arranged so as to pivot around an axis perpendicular to a longitudinal axis of the bus bar (10). The bus bar (10) presents a projection and that the knife (9) is pivotable to a first position, in which it directly contacts said projection, and to a second position in which it is removed from contact with said projection.
摘要:
The invention relates to an arrangement comprising a load interrupter (201) and a grounding switch (202). According to the invention, the load interrupter, in one of its switch positions, is configured to ground a first terminal (6) of a fuse (4). A shaft (203) of the load interrupter (201), which shaft comprises moving contacts (205), is mechanically coupled to a shaft (217) of the grounding switch (202), which shaft comprises respective moving contacts (221), in such a manner that the grounding switch (202) is closed in one of the switch positions of the load interrupter (201) to ground a second terminal (7) of the fuse (4). The shaft (217) of the grounding switch and at least one of the moving contacts (221) of the grounding switch are bent from a sheet metal. In a point of contact of the moving contact of the grounding switch in which the moving contact (221) contacts a stationary contact of the grounding switch during closing, the sheet metal is bent and forms a rounded section.
摘要:
The invention relates to a contact arrangement (3, 40), having a contact unit (15, 42) for producing an electrical connection between a first contact (4, 49), which is arranged fixed in position on an insert (1) for a low-voltage switchgear assembly (2), and a second contact (5, 54), which is arranged fixed in position in the switchgear assembly.
摘要:
An electric switching device for fast closing of a high current comprises one movable contact element (4) and one fixed contact element (5), which form a sliding contact. A spring member (2) operates the first contact element (4). During the closing movement, the first contact element completes an acceleration phase (t1), during which the spring force stored in the spring member (2) by clamping is transformed into kinetic energy of the movable contact element. Then follows a movement phase (t2-t1), during which the movable contact element moves towards the closed position at constant speed. The spring member (2) comprises a freely journalled torsion-spring rod, one end of which is fixed to an operating arm (3) which is freely rotatable between a first support (7) and a second support (8). The contact element (4) is fixed to the second end of the torsion-spring rod, the torsion-spring rod being clamped by rotating the contact element in the opening direction with the operating arm against the first support. The fixed contact element (5) comprises a plurality of contact fingers (14) as well as a plurality of spring fingers (17). The contact fingers are made of a first electrically conducting material with good electrical conductivity. The spring fingers (17) are made of a second conducting material with a high yield point and designed so as to have an essentially higher resonance frequency than the contact fingers. The spring fingers are adapted to rapidly resume a contact position after a deflection excited transversely of the closing direction.
摘要:
Die Erfindung betrifft einen Schalter für den Einsatz in SF 6 -Mittelspannungsschaltanlagen, gebildet aus einem betätigbaren Schaltkontakt mit wenigstens einem Kontaktmesser (1), einem Festkontakt und einer Lichtbogenlöscheinrichtung, wobei das Kontaktmesser (1) einen schwenkbar gelagerten Schaft und eine in einer Ebene im wesentlichen senkrecht zur Schwenkachse (S) ausgebildete Kontaktfläche (8) für den Festkontakt aufweist. Es wird ein derartiger Schalter so gestaltet, daß er erleichtert schaltbar ist und daß dessen Abbrandfestigkeit bei Sicherstellung der Dauerstromtragfähigkeit erhöht ist. Dazu ist die Kontaktfläche (8) an einem gegenüber dem Schaft (7) erheblich dickeren Kontaktkopf (10) ausgebildet, und dieser (10) besteht in dem durch einen sich beim Schalten ausbildenden Lichtbogen (LB) thermisch beaufschlagten Teil (Spitzen 11, 20, 21) aus einem hochtemperaturbeständigen Werkstoff.