Switching device
AssigneeVacon Oyj
InventorsDan Isaksson, Eero Pasanen, Leo Palomaki
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AssigneeVacon Oyj
InventorsDan Isaksson, Eero Pasanen, Leo Palomaki
Estimating the term…
The present invention relates to a switching device (14) which is arranged to switch a load (12) to a direct voltage circuit (13). The switching device (14) comprises a switching member (14a) consisting of at least three contacts (7, 8, 9), a control member (10) which controls the contacts (7, 8, 9) of the switching member (14a) and has the positions open [0] and closed [1], and one or more spring members (16a, 16b) which are tensioned by the control member (10) and control the contacts. The switching device is characterized in that the switching member (14a) of the switching device (14) comprises a limiter arrangement which is arranged to limit closing of at least one contact (7) when the control member (10) is turned from the open [0] position into the closed [1] position, the limiter arrangement comprising a limiter (1) and a toggle joint (17) connected thereto and a solenoid (4) arranged in the toggle joint, the toggle joint (17) being arranged to be controlled by the solenoid (4), as a result of which the toggle joint (17) turns the limiter (1) so that it releases the contact (7) of the switching member (14a) whose closing has been prevented, allowing the contact to close.
A switching device which is arranged to switch a load to a direct voltage circuit, comprising:
A switching device according to 3, 4 or 5, wherein an electrically-controlled solenoid is arranged in the fold of the toggle joint, the solenoid being arranged to generate an impulse in the fold of the toggle joint, as a result of which the toggle joint folds and releases the limiter so that it can turn and release the spring member, thus closing the third contact.
A switching device according to any one of the preceding claims, wherein the limiter is a lever arm.
A switching device according to any one of the preceding claims, wherein the switching device has three operating positions:
A switching device according to any one of the preceding claims, wherein the control member of the switching device has two positions:
Dependencies are inferred from the claim text.