摘要:
A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole (200). Each of the bus-bars for pole (200a, 200b, 200c) being providing correspondingly for each pole comprises a ring-shaped bus-bar portion (200a-1, 200b-1, 200c-1) electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion (200a-4) and an external solid insulated mold portion (200a-3) in which the conductor portion is built; and a plurality of extended connecting portions (200a-2, 200b-2, 200c-2) respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.
摘要:
The present invention discloses a 4-position mechanism for the synchronized operation of closing and opening of a vacuum bottle switching device and a selector device. The synchronized operation is achieved with the help of interlock arrangements. Each of the vacuum bottle switching device and the selector device comprise separate energy storage and releasing means. Energy is loaded into both the devices by the user input with the help of dedicated levers. The movement in the output shafts is observed only after the dead point has been reached. Any movement from dead point to the main output shaft is transmitted through articulated levers. In the vacuum bottle switching device, conversion of energy makes the main shaft translate in one direction to close the switch and also, stores energy for translation of the shaft in opposite direction to open the switch. Said interlock arrangements are configured such that upon insertion of a removable handle into an accessible handle receptor (33,14,38) of any one of the selector operating means, switching device operating means or earth operating means, the access to the remaining operating means is blocked.
摘要:
A drive lock for a switch gear having two - alternately open and closed - switches comprises two switching disks (2, 3) disposed pivotally on a base plate (1) and connected to the switches, the disks being alternately locked with a locking rocker (11, 12). A locking plate (7) displaceable about a pivot (6) on the base plate between the two switching disks as a result of the displacement thereof respectively fastens the locking rocker that locks the switching disk assuming the “OFF” position. Thus, also an unlocking plate (20, 21) guided on a receiving element (5) for a control tool is blocked such that the control tool cannot be fastened to the respective switching disk and said disk cannot accidentally be actuated by force and the drive and locking system cannot be damaged.
摘要:
A mechanical actuator mechanism for first and second electrical switches (13, 14) connected in series. The first and second switches are driven to open or closed positions through respective first and second shafts (16, 14a) linked to respective first and second mechanical energy stores (112, 201, Fig. 9), operation of the switches being co-ordinated by latch means (301, 302) which in use prevent or permit rotation of the shafts, thereby to synchronise release of energy from the energy stores to rotate the shafts. To be accompanied, when published, by Figures 3 and 9(a) of the drawings.
摘要:
Le dispositif pour verrouiller par des serrures, la manoeuvre manuelle d'un sectionneur (SKG) ayant une entrée de manivelle (ESKG) et autoriser, par une certaine séquence de manoeuvre par clé des serrures, la manoeuvre manuelle du sectionneur pour le faire passer d'une première position de commutation à une seconde position de commutation, comprend une première serrure (S3) et une seconde serrure (S2) se manoeuvrant chacune avec au moins une clé, un jeu de cames (31,32) dont la rotation est liée à la manoeuvre du sectionneur et qui agissent sur les pennes desdites serrures pour empêcher la manoeuvre de la première serrure tant que le sectionneur n'occupe pas sa seconde position de commutation et empêcher la manoeuvre par clé de la seconde serrure dès que le sectionneur n'occupe plus la première position de commutation, les deux serrures étant disposées de façon que leur penne respectif en position avancée obture l'entrée de manivelle du sectionneur, le penne de la première serrure étant en position rétractée et le penne de la seconde serrure étant en position avancée quand le sectionneur occupe sa première position de commutation.
摘要:
Bei einer elektrischen Schaltanlage mit mehreren Schaltern für jede Phase, beispielsweise einem Erdungsschalter (1), einen Trennschalter (2) und einem Leistungsschalter (3) weist wenigstens einer der Schalter, beispielsweise der Erdungsschalter einen Motorantrieb (10) sowie eine lösbare mechanische Kupplung (5) auf, die die Antriebsbewegung übermittelt. Die Kupplung (5) ist durch Betätigung des Trennschalters (2) bei dessen Einschaltung außer Eingriff bringbar, so daß bei eingeschaltetem Trennschalter (2) der Erdungsschalter (1) nicht in Erdungsstellung gebracht werden kann und eine Verbindung des Hochspannungspotentials mit dem Erdpotential vermieden ist.
摘要:
A circuit breaker/disconnector apparatus for use in a power delivery system comprises a unidirectional DC circuit breaker which has a first terminal and a second terminal and is configured to automatically open during an overcurrent condition in a forward direction and to remain closed independent of current level in a reverse direction. A disconnector switch is in series with the circuit breaker. The disconnector switch has a first terminal for connecting to a first polarity connector of a power supply, a second terminal for connecting to a second polarity connector of the power supply and a common terminal connected to the first terminal of the circuit breaker. The disconnector switch has at least a first position in which the first terminal is connected to the common terminal and a second position in which the second terminal is connected to the common terminal. The second polarity connector of the power supply may be coupled to a track of a transport system and the second polarity connector of the power supply may be coupled to a live overhead cable or live third rail of a transport system. The apparatus can be used to safely ground the live cable or third rail when in a maintenance condition.
摘要:
Ce contacteur (10) comprend : - au moins un interrupteur à vide (12), chacun comportant un contact fixe (14), un contact mobile (16) et une tige (18) solidaire du contact mobile (16), la tige (18) étant mobile entre une position de fermeture de l'interrupteur (12) dans laquelle le contact mobile (16) est en appui contre le contact fixe (14) et une position d'ouverture de l'interrupteur (12) dans laquelle le contact mobile (16) est à l'écart du contact fixe (14), et - un premier organe (20) de déplacement de chaque tige (18) suivant une direction de déplacement (X), depuis la position de fermeture vers la position d'ouverture. Le contacteur (10) comprend en outre des moyens (30) de régulation de la vitesse de déplacement de chaque tige (18), tout au long du déplacement de ladite tige (18) depuis la position de fermeture jusqu'à la position d'ouverture.