Electric distribution device, installation comprising such a device, and electrical protection process
First Claim
1. An electrical distribution device comprising an input for connection to an incoming electrical line, electrical protection means connected to the input and electrical distribution feeders for supplying electrical loads, said protection means comprising:
- a main part comprising main breaking means connected to the input, and main control means for controlling opening and closing of the main breaking means, and at least one secondary part separated from the main part and comprising at least one secondary breaking device and secondary control means for commanding opening and closing of at least one secondary breaking device, said at least one secondary breaking device for connection to an electrical power distribution line and to at least one electrical distribution feeder, the secondary control means for enabling opening of at least one secondary breaking device if a current flowing in said breaking device is lower than a preset opening current threshold.
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Accused Products
Abstract
An electrical distribution device having a main part including a main breaking device, at least one secondary part having at least one secondary breaking device, and an electrical power distribution line connected between the main and secondary parts. The secondary breaking device includes secondary control circuit for enabling opening of at least one secondary breaking device if a current flowing in said breaking device is lower than a preset opening current threshold. A distributed electrical installation includes at least one such device. An electrical protection process for an electrical distribution device includes an opening step of the secondary breaking devices when a current flowing in these devices is lower than a preset opening current threshold following detection of a fault.
23 Citations
22 Claims
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1. An electrical distribution device comprising an input for connection to an incoming electrical line, electrical protection means connected to the input and electrical distribution feeders for supplying electrical loads, said protection means comprising:
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a main part comprising main breaking means connected to the input, and main control means for controlling opening and closing of the main breaking means, and at least one secondary part separated from the main part and comprising at least one secondary breaking device and secondary control means for commanding opening and closing of at least one secondary breaking device, said at least one secondary breaking device for connection to an electrical power distribution line and to at least one electrical distribution feeder, the secondary control means for enabling opening of at least one secondary breaking device if a current flowing in said breaking device is lower than a preset opening current threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electrical protection process for an electrical distribution device, comprising:
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first detecting an electrical fault in main breaking means, second detecting an electrical fault in secondary breaking means connected by a distribution line to the main breaking means, delaying said protection process, opening the main breaking means, opening the secondary breaking means when a current flowing in said secondary breaking means is lower than a preset opening current threshold value following detection of a fault at said second detecting, and first closing the main breaking means after a preset time delay. - View Dependent Claims (21)
second opening the main breaking means commanded by transmission of a priority opening command signal on a communication line connected between the secondary breaking means and the main breaking means, said priority signal being transmitted when a fault current flowing in a secondary breaking device is detected, and second closing the main breaking means after an end of transmission of said priority signal step.
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22. An electrical protection process for an electrical distribution device comprising:
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first detecting an electrical fault in secondary breaking means connected by a distribution line and a communication line to main breaking means, beginning transmitting a priority opening command signal on said communication line to command opening of the main breaking means, first opening the main breaking means commanded by transmission of said priority opening command signal on said communication line, second opening the secondary breaking means when a current flowing in secondary breaking means is lower than a preset opening current threshold value following detection of a fault at said first detecting, ending transmitting the priority opening command signal, and closing the main breaking means after said ending transmitting the priority opening command signal.
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Specification