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US 4,636,652 AGranted
Electric circuit control device
AssigneeCompagnie Industrielle des Telecommunications Citalcatel
InventorMarc Raes
Life of this patent
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AssigneeCompagnie Industrielle des Telecommunications Citalcatel
InventorMarc Raes
Estimating the term…
An electronic control device enables a load to be separated from a power supply network for a time corresponding to the period which the load would cause a major disturbance in the network due to the state of the load at the time of a temporary main outage. The electric circuit control device comprises a first, normally open controlled switch (2) connected in the electric circuit, a second, normally closed, controlled switch (4) shunted with the first controlled switch (2), a power supply network (6) for supplying power to the control device, first time delay control network (17) connected to the first controlled switch (2), second time delay control network (30) connected to the second controlled switch (4) and memory network (41) connected to the second controlled switch (4), the time delay of the first control network (17) being at most equal to the time delay of the second control network (30).
Electric circuit control device comprising a first, normally open, controlled switch connected in the electric circuit, a second, normally closed, controlled switch shunted with the first controlled switch, means for supplying power to the control device, said means connected in the electric circuit upstream from said first and second controlled switches, first time delay control means connected to said first controlled switch, second time delay control means connected to said second controlled switch and memory means connected to said second controlled switch, the time delay of the first control means being at most equal to the time delay of the second control means.
Dependencies are inferred from the claim text.