Device for anti-fire protection of a starter-controller device of an electrical installation

Patent metadata

Field	Value
Publication number	US-10463897-B2
Application number	US-201514870348-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Oct 9, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An anti-fire protection device for a starter-controller device of an electrical installation is able to be connected to an electrical power conductor and includes thermal monitoring of the electrical power conductor to detect a temperature rise of greater than a predetermined threshold. This anti-fire protection device can be fixed mechanically to the starter-controller device via at least one mechanical linking member. The thermal monitoring includes at least one temperature sensor and a cartridge including a fire extinguishing agent and at least one injection element, situated on the same face of the protection device as the temperature sensor, the cartridge being situated inside the protection device and connected to the temperature sensor, the injection element being able to inject the fire extinguishing agent towards the electrical power conductors subsequent to a detection, by the temperature sensor, of a temperature of greater than the predetermined threshold.

First claim

The invention claimed is:

1. An anti-fire protection device for a starter-controller device of an electrical installation, the starter-controller device being adapted to be connected to at least one electrical power conductor, the protection device comprising:
a thermal surveillance device configured to perform thermal surveillance of the at least one electrical power conductor adapted to detect the temperature rising above a predetermined threshold,
wherein the thermal surveillance device is adapted to be fixed mechanically to the starter-controller device via at least one mechanical connection member,
wherein said thermal surveillance device includes at least one temperature sensor, including an exposed end portion projecting from a rear face of the protection device and facing an interior rear surface of the starter-controller device, adapted to sense a temperature at the exposed end portion projecting from the rear face at the level of the electrical power conductors of the starter-controller device,
wherein said thermal surveillance device includes a cartridge comprising a fire extinguishing agent and at least one injection element, situated on the same rear face of the protection device as the at least one temperature sensor, said cartridge being situated inside the protection device, connected to said at least one temperature sensor, the at least one injection element and the at least one temperature sensor both face the interior rear surface of the starter-controller device in a same direction, where the at least one temperature sensor is configured to be inserted into at least one respective recess disposed on the interior rear surface of the starter-controller device, and the at least one injection element is configured to be inserted into at least one respective housing disposed on the interior rear surface of the starter-controller device, and
wherein the injection element is adapted to inject the fire extinguishing agent towards the electrical power conductors following detection by the temperature sensor, of a temperature above the predetermined threshold.

2. The anti-fire protection device according to claim 1 , comprising a locking piston connected to a locking spring and adapted to be moved when the fire extinguishing agent is released.

3. The anti-fire protection device according to claim 2 , comprising a tripping element adapted to be moved along a predetermined axis by movement of the locking piston and adapted to drive a change of position of a mechanical connection element between the protection device and the starter-controller device.

4. The anti-fire protection device according to claim 3 , wherein the mechanical connection element is adapted to assume three distinct positions, including normal operating positions and a locking position, said locking position leading to locking a connection/disconnection control member of the starter-controller device in a disconnection position.

5. The anti-fire protection device according to claim 1 , wherein said fire extinguishing agent is a gas or a foam.

6. The anti-fire protection device according to claim 1 , wherein said predetermined temperature threshold is 110° C.

7. The anti-fire protection device according to claim 1 , wherein the cartridge comprising a fire extinguishing agent is positioned substantially facing the injection element or elements.

8. The anti-fire protection system for an electrical installation, comprising a starter-controller device of the electrical installation and an anti-fire protection device according to claim 1 , the anti-fire protection device being adapted to be fixed to the front of the starter-controller device.

9. An anti-fire protection device for a starter-controller device of an electrical installation, the starter-controller device being adapted to be connected to at least one electrical power conductor, the protection device comprising:
a thermal surveillance device configured to perform thermal surveillance of the at least one electrical power conductor adapted to detect the temperature rising above a predetermined threshold,
wherein the thermal surveillance device is adapted to be fixed mechanically to the starter-controller device via at least one mechanical connection member,
wherein said thermal surveillance device includes at least one temperature sensor, including a portion projecting from a rear face of the protection device, adapted to sense a temperature at the level of the electrical power conductors of the starter-controller device,
wherein said thermal surveillance device includes a cartridge comprising a fire extinguishing agent and at least one injection element, situated on the same rear face of the protection device as the at least one temperature sensor, said cartridge being situated inside the protection device, connected to said at least one temperature sensor,
wherein the injection element is adapted to inject the fire extinguishing agent towards the electrical power conductors following detection by the temperature sensor, of a temperature above the predetermined threshold, and
the anti-fire protection device further comprising a locking piston connected to a locking spring and adapted to be moved when the fire extinguishing agent is released.

Assignees

• Schneider Electric Ind Sas

Inventors

• Dedina Gregory
• Loiacono Bernard

Classifications

• H01H2071/0292

  Housing or frames containing grooves or slots for guiding movable parts · CPC title

• H01H89/06

  Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device · CPC title

• A62C3/16 Primary

  in electrical installations, e.g. cableways · CPC title

• A62C35/13

  with a finite supply of extinguishing material · CPC title

• A62C35/026

  the extinguishing material being put under pressure by means other than pressure gas, e.g. pumps · CPC title