Surge protection device

Patent metadata

Field	Value
Publication number	US-10903647-B2
Application number	US-201916530643-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Aug 3, 2018
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A surge protection device with stack spark gaps, whereby a stack spark gap is formed from multiple electrodes and insulating elements that are arranged between the electrodes, with an ignition switch for influencing the ignition behavior of the stack spark gaps, with a first electrically conductive clamping element and with a second electrically conductive clamping element, whereby the clamping elements are arranged on opposite sides of the stack spark gaps, with at least one connecting element by which the clamping elements are connected to one another, and with connection elements for electrical connection of the stack spark gaps.

First claim

The invention claimed is:

1. A surge protection device, comprising:
a plurality of stack spark gaps, each stack spark gap being formed from multiple electrodes and insulating elements that are arranged between the electrodes,
an ignition circuit for influencing the ignition behavior of the stack spark gaps,
a first electrically conductive clamping element and a second electrically conductive clamping element, the clamping elements being arranged opposite to one another at the front sides of the stack spark gaps,
at least one connecting element by which the clamping elements are connected to one another, and
connection elements for electrical connection of the stack spark gaps,
wherein three stack spark gaps are arranged beside one another between the two clamping elements,
wherein the at least one connecting element is electrically conductive, and the two clamping elements are connected electrically to one another via the connecting element,
wherein each stack spark gap is connected on a first end that is used as a connection end in an electrically conductive manner to one of the connection elements,
wherein an insulator is arranged between each the clamping element and the connection side of an adjacent one of stack spark gaps, so that the connection side of the adjacent stack spark gap is insulated electrically from the clamping element,
wherein a second end of each stack spark gap that is opposite the first end is connected in an electrically conductive manner to one of the clamping elements in such a way that the three stack spark gaps form a star circuit, and
wherein the ignition circuit is pluggable onto at least one of the clamping elements so as to be held in a defined manner opposed to the at least one of the clamping elements and the stack spark gaps.

2. The surge protection device according to claim 1 , wherein, in a plugged-on state, the ignition circuit makes electrical contact with the at least one of the clamping elements.

3. The surge protection device according to claim 1 , wherein the ignition circuit, in the plugged-on state, makes contact with at least one electrode via a contact of the ignition circuit.

4. The surge protection device according to claim 3 , wherein each electrode of a stack spark gap is contacted except for a first electrode on the first end of each stack spark gap.

5. The surge protection device according to claim 4 , wherein the ignition circuit comprises capacitors, a respective capacitor being connected with one terminal to a respective electrode of the stack spark gap and wherein the other terminals of the capacitors are connected to one another in an electrically conductive manner.

6. The surge protection device according to claim 1 , wherein a plug is made on at least one clamping element, which plug extends into at least one corresponding recess in the ignition circuit, the recess being in a plate of the ignition circuit.

7. The surge protection device according to claim 1 , wherein the electrodes of the stack spark gaps are arranged in holding frames that can be stacked flat one on top of another, whereby the individual holding frames have recesses for respectively accommodating one of the electrodes per recess.

8. The surge protection device according to claim 7 , wherein, in the individual holding frames, a number of contact openings that corresponds to the number of recesses are formed, whereby, each of the contact openings is connected to a respective one of the recesses, so that the electrodes arranged in the recesses can be contacted by the ignition circuit through the contact openings.

9. The surge protection device according to claim 7 , wherein gripping surfaces are made on the opposite ends of the holding frames.

10. The surge protection device according to claim 1 , wherein the stack spark gaps are arranged in a housing comprised of at least a housing bottom and a housing cover.

11. The surge protection device according to claim 10 , wherein latching catches are provided on the housing bottom, the catches engaging in corresponding latching recesses on the housing cover, so that the housing cover can be latched onto the housing bottom.

12. The surge protection device according to claim 9 , wherein the electrodes of the stack spark gaps are arranged in the holding frames and wherein the gripping surfaces are accessible via recesses formed on opposite sides of the housing.

13. The surge protection device according to claim 9 , wherein connection openings are made in the housing bottom and in that the connection elements of the stack spark gaps have connection areas which extend at least partially through the connection openings from the housing.

Assignees

• Phoenix Contact Gmbh & Co

Inventors

• Meyer Thomas
• Sagebiel Hannes
• Trachte Karsten

Classifications

• H01T4/16 Primary

  having a plurality of gaps arranged in series · CPC title

• H01T4/20

  Arrangements for improving potential distribution · CPC title

• H01R4/38

  utilising a clamping member acted on by screw or nut (H01R4/50 takes precedence) · CPC title

• H01T4/06 Primary

  Mounting arrangements for a plurality of overvoltage arresters · CPC title

• H01T4/18

  Arrangements for reducing height of stacked spark gaps · CPC title