Disconnecting device for a power line and method for disconnecting a power line

Patent metadata

Field	Value
Publication number	US-10475609-B2
Application number	US-201716318528-A
Country	US
Kind code	B2
Filing date	Apr 18, 2017
Priority date	Jul 18, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

Disconnecting device for a power line, having at least one disconnecting means which is spatially arranged between a first and a second connector when the disconnecting device is in a closed state, the disconnecting means having at least one connecting element forming an electrical connection between the connectors when the disconnecting device is in the closed state, wherein the connecting element is electrically connected to the first connector via a first contact point and to the second connector via a second contact point when the disconnecting device is in the closed state, and wherein the disconnecting means is arranged in such a way that a breakdown voltage between the first and the second connector when the disconnecting device is in an open state is greater than between the first connector and the first contact point of the connecting element and/or between the second connector and the second contact point of the connecting element.

First claim

The invention claimed is:

1. A disconnecting device for a power line, the disconnecting device comprising:
at least one disconnecting means which is spatially arranged between a first connector and a second connector when the disconnecting device is in a closed state,
the at least one disconnecting means being movable between a closed position and an open position, and having at least one connecting element forming an electrical connection between the first and second connectors when the disconnecting device is in the closed state,
wherein the at least one connecting element is electrically connected to the first connector via a first contact point and to the second connector via a second contact point when the disconnecting device is in the closed state,
wherein the at least one disconnecting means is arranged in such a way that a breakdown voltage between the first connector and the second connector when the disconnecting device is in an open state is greater than the breakdown voltage between at least one of the first connector and the first contact point of the at least one connecting element and the second connector and the second contact point of the at least one connecting element,
wherein the at least one disconnecting means is coated with at least two resistor elements which have different specific conductivities and form a resistance gradient, and
wherein the at least two resistor elements, immediately after disconnection, are arranged between the first and second connectors, thereby electrically connecting the first and second connectors.

2. The disconnecting device according to claim 1 ,
wherein
the at least one connecting element is arranged on the at least one disconnecting means in such a way that a disconnection takes place at at least two contact points at substantially the same time.

3. The disconnecting device according to claim 1 ,
wherein
the at least one disconnecting means is movable between an open state and the closed state of the disconnecting device in at least one of a translational manner and a rotational manner.

4. The disconnecting device according to claim 1 ,
wherein
the at least one disconnecting means comprises a catch tab which holds the at least one disconnecting means in position when the disconnecting device is in the closed state.

5. The disconnecting device according to claim 1 ,
wherein
the at least one disconnecting means is controlled by compressed air.

6. The disconnecting device according to claim 1 ,
wherein,
in a final state of the disconnecting device, the at least one disconnecting means is arranged in such a way that the breakdown voltage between the first connector and the second connector is the same as or less than the breakdown voltage between at least one of the first connector and the first contact point of the at least one connecting element and the second connector and the second contact point of the at least one connecting element.

7. The disconnecting device according to claim 1 ,
wherein
the at least one disconnecting means comprises at least one isolation element which is spatially arranged between the first connector and the second connector when the disconnecting device is in an open state.

8. The disconnecting device according to claim 7 ,
wherein
the at least one isolation element is formed from an isolation material having a dielectric strength of more than 5 kV/mm.

9. The disconnecting device according to claim 7 ,
wherein
the at least one isolation element is formed from an isolation material having a specific electric conductivity of less than 10 −5 S·cm −1 .

10. The disconnecting device according to claim 1 ,
wherein
the at least two resistor elements are formed from a material having a specific electric conductivity of less than 10 2 S·cm −1 .

11. The disconnecting device according to claim 1 ,
wherein
the disconnecting device comprises at least two disconnecting means electrically connected in series, and wherein the at least two disconnecting means are spatially separated from one another.

12. A method for disconnecting a power line, the method comprising:
receiving at least one disconnecting signal,
triggering at least one control signal in such a way that
an electrical connection between a connecting element arranged on a disconnecting means and a first connector at a first contact point and an electrical connection between the connecting element and a second connector at a second contact point is disconnected by the movement of the disconnecting means from a closed position to an open position in such a way that
a breakdown voltage between the first connector and the second connector when the disconnecting device is in a disconnected state is greater than the breakdown voltage between at least one of the first connector and the first contact point of the connecting element and the second connector and the second contact point of the connecting element,
wherein the disconnecting means is coated with at least two resistor elements, wherein the at least two resistor elements have different specific conductivities and form a resistance gradient, and wherein the at least two resistor elements are arranged between the first connector and the second connector immediately after disconnection.

13. The method for disconnecting a power line according to claim 12 ,
wherein,
in addition to a disconnection of the electrical connection, at substantially the same time as the disconnection of the electrical connection, a second electrical connection is produced to discharge stored electrical energy.

Assignees

• Auto Kabel Man Gmbh

Inventors

• Cacciatore David
• Tazarine Wacim
• Rafati Sohejl

Classifications

• H01H9/42

  Impedances connected with contacts · CPC title

• H01H39/00 Primary

  Switching devices actuated by an explosion produced within the device and initiated by an electric current · CPC title

• H01H2039/008

  using the switch for a battery cutoff · CPC title