Abstract:
Die Erfindung betrifft eine Schaltfederanordnung zum Betätigen eines Schalters, umfassend einen ersten Federarm, betätigbar durch eine Karte und mindestens einen zweiten Federarm mit einer Kontaktkuppe an dessen freien Ende zum Betätigen eines Schalters, welcher sich unterhalb der Kontaktkuppe des zweiten Federarmes befindet, wobei der erste Federarm von dem zweiten Federarm betätigbar ist.
Abstract:
An energy transfer system absorbs impact forces and/or energy from a moveable conductive blade directly attached to a moveable contact in a circuit breaker. The energy transfer system includes a rotatable member and a biasing member. The rotatable member has an axis of rotation about which the rotatable member is rotatable between a first position and a second position. The rotatable member further includes a protrusion. The protrusion has an initial curved engagement surface portion, a planar engagement surface portion next to the initial curved engagement surface portion, and a final curved engagement surface portion next to the planar engagement surface portion. The biasing member biases the rotatable member towards the first position. The movable conductive blade impacts the initial curved engagement surface portion to cause the rotatable member to begin to rotate about the axis of rotation such that the moveable conductive blade then contacts the planar engagement surface portion and then the final curved engagement surface portion.
Abstract:
Elektrischer Schleifkontaktschalter (1), welcher ein Kontaktgeberelement (2) mit einem ersten (3) und einem zweiten (4), miteinander starr verbundenen Schleifkontakt aufweist, welche in derselben Richtung (X) mit jeweiligen Auflagebereichen (3a, 4a) gegen eine einen gemeinsamen Schleifbereich (6) ausbildende Oberfläche (5) gedrängt sind, wobei für jeweils einen Schleifkontakt (3, 4) in dem gemeinsamen Schleifbereich (6) jeweils ein Isolierabschnitt (9, 10) und ein Kontaktabschnitt (11, 12) gebildet ist, wobei ein Isolierabschnitt (9, 10) jeweils durch einen Auflagebereich (3a, 4a) eines Schleifkontakts (3, 4) überstrichen wird, wenn der jeweils andere Schleifkontakt (4, 3) seinen Kontaktabschnitt (12, 11) mit seinem Auflagebereich (4a, 3a) überstreicht, wobei eine Aussparung (14) innerhalb eines Isolierabschnitts (9, 10) gebildet ist, welche von einem Auflagebereich (3a, 4a) eines Schleifkontakts (3, 4) überstrichen wird, falls der andere Schleifkontakt (4, 3) seinen Kontaktabschnitt (12, 11) überstreicht.
Abstract:
Embodiments provide an electrical contact assembly (100). The electrical contact assembly includes a crossbar (102), a pivot pin (104) mounted in the crossbar, a contact arm (106) pivotally mounted on the pivot pin and rotatable about a pivot axis (107), a moveable electrical contact (108M) spaced from the pivot axis in a first arm portion (106A) of the contact arm, and a spring assembly (110) coupled between the crossbar and the contact arm, the spring assembly including a clevis pin (112A) and a spring (114) received on the clevis pin wherein an end of the clevis pin extends through the spring and is received in a pivot recess (126) in the crossbar. Electrical contact assemblies with offset rod ends and limit stops are also disclosed. Systems including the electrical contact assembly and methods of operating the electrical contact assembly are provided, as are other aspects.
Abstract:
A preventive maintenance tapping technique includes noting a tap position of a load tap changer and noting a duration that the tap position has been held. The duration that the tap position has been held is compared to a threshold value, and the tap position is changed if the tap position has been held for longer than the threshold value. Similarly, a duty cycle monitoring technique for monitoring life of load tap changer contacts includes detecting an arcing event. Arcing surfaces involved in the arcing event are identified and the effects of the arcing event on the arcing surfaces are calculated. Estimates of the erosion on the arcing surfaces are updated, and the estimates are compared to a threshold value. A signal for maintenance is generated when the estimate exceeds the threshold value.
Abstract:
The invention concerns an interrupting device for a contact pole in a switching apparatus consisting of a mobile contact-support (10) comprising a cylindrical contact pressure spring (15), a slide (20) mobile along an axis X and a mobile bridge (30) supporting two mobile contacts (41). The mobile bridge (30) has a central opening (33) wherein are inserted two protuberances (22) belonging to the slide (20) and provided with an outer pin (34) for locking the slide (30) on the mobile bridge (30). One end (16) of the spring (15), pressing on the mobile bridge (30), is maintained in position by an edge (28) provided on the lateral ends (25) of the slide (20) and is centred by the protuberances (22) of the slide (20).
Abstract:
Switch, comprising at least two interacting contacts (1, 2) and a closing spring (5, 11, 15, 21) for moving the contacts into the closed position, an operating button which can be used to initiate a prestressing phase of the closing spring (5, 11, 15, 21), and a locking device (6) for locking the contacts (1, 2) in closing the switch, untill a predetermined moment at which the influence of the prestressed closing spring (5, 11, 15, 21) is to be released onto the contacts. The locking device (6) is designated to lock the interacting contacts (1, 2), during the prestressing phase, at a contact distance. The contact distance to be locked being less than the contact distance in the open position of the contacts (1, 2).
Abstract:
An electrostatic microrelay which has desired operating speed at the time of the initial operation and the reset operation, is ensured to have a desired contact pressure, and driven by a low voltage. The microrelay opens/closes an electric circuit by driving a movable electrode (25) of an actuator (20) fixed to the top face of a base (10) by utilizing the electrostatic attractive force generated by application of a voltage between the movable electrode (25) and a fixed electrode (12) provided to the base (10) to bring a movable contact (28) provided to the actuator (20) into/out of contact with fixed contacts (13, 14) provided to the actuator (20). The actuator (20) is provided with an anchor (21) erected on the base (10), a first thin-plate beam section (22) extended in parallel with the base (10) from the edge section of the upper surface of the anchor (21), and a second thin-plate beam section (23) extended in parallel with the base (10) from the first beam section (22). The movable electrode (25) is rotatably coupled with the second beam section (23).
Abstract:
본 발명의 실시예에 따른 기중 차단기는, 일측이 개방된 개구부가 구비되는 바디부; 상기 바디부에 회전 가능하게 결합되고, 상기 개구부에 삽입되는 복수의 가동자; 및 상기 바디부에 수용되고, 상기 복수의 가동자 각각에 탄성력을 제공하는 복수의 접압 스프링을 포함하고, 상기 복수의 접압 스프링은, 복수의 제1 접압 스프링; 및 상기 복수의 제1 접압 스프링 사이에 배치되는 복수의 제2 접압 스프링을 포함하고, 상기 복수의 제1 접압 스프링은, 상기 복수의 제2 접압 스프링보다 상기 복수의 가동자에 큰 탄성력을 제공할 수 있다.
Abstract:
Es sind Kontaktbrückenvorrichtungen (26) für Schalter (20) von Hochvoltschützen (10) oder Hochvoltrelais mit einer axial bewegbaren Kontaktbrücke (28) mit einem ersten Ende (30), an dem zumindest ein 10 Kontakt (34) ausgebildet ist und einem zum ersten Ende (30) radial gegenüberliegenden zweiten Ende (32), an dem zumindest ein Kontakt (34) ausgebildet ist und einem Betätigungsglied (24), über welches die Kontaktbrücke (28) axial in Richtung von Gegenkontakten (36) des Schalters (20) verschiebbar ist, bekannt. Um die Levitationskraft zu senken und somit kleinere Aktoren verwenden zu können, wird erfindungsgemäß vorgeschlagen, dass die Kontaktbrücke (28) am ersten Ende (30) und am zweiten Ende (32) jeweils mindestens drei parallele, biegsame Zungen (40, 41) aufweist, an deren Enden (30, 32) jeweils ein Kontakt (34) ausgebildet ist.