Assembly for the discharge of electric overvoltages
First Claim
Patent Images
1. An assembly for the discharge of electric voltages comprising:
- a housing, including a spacer along an inside diameter;
an over-voltage arrester including a tubular ceramic insulator and first and second electrodes arranged at opposite ends of said tubular ceramic insulator, said second electrode having an axially extending cylindrical connecting pin; and
a voltage-limiting device being electrically connected in parallel with said over-voltage arrester and having a response voltage greater than a response voltage of said over-voltage arrester, said voltage-limiting device being placed on said second electrode of said over-voltage arrester and comprising a metal oxide varistor in the form of a hollow cylinder having metallized end sides;
wherein said over-voltage arrester and said voltage emitting device are arranged concentrically in the housing with said spacer centering said over-voltage arrester, andwherein said ceramic insulator, said first and second electrodes and said hollow-cylindrical varistor having approximately the same outside diameter which is less than said inside diameter of said container.
2 Assignments
0 Petitions
Accused Products
Abstract
As a known "back-up device" for a gas-filled over-voltage arrester, a voltage-dependent resistor (6) is arranged centrally in a housing with the over-voltage arrester (1). The varistor (6) can, in this connection, be sealed with a moisture-repelling substance and it is arranged concentrically to a connecting pin (5) of the over-voltage arrester. By means of an auxiliary electrode (8) of annular disk shape placed on the varistor (6), an air gap (13) from the connecting pin (5) can be formed. The varistor, after its response, can be short-circuited via this air gap.
33 Citations
12 Claims
-
1. An assembly for the discharge of electric voltages comprising:
-
a housing, including a spacer along an inside diameter; an over-voltage arrester including a tubular ceramic insulator and first and second electrodes arranged at opposite ends of said tubular ceramic insulator, said second electrode having an axially extending cylindrical connecting pin; and a voltage-limiting device being electrically connected in parallel with said over-voltage arrester and having a response voltage greater than a response voltage of said over-voltage arrester, said voltage-limiting device being placed on said second electrode of said over-voltage arrester and comprising a metal oxide varistor in the form of a hollow cylinder having metallized end sides; wherein said over-voltage arrester and said voltage emitting device are arranged concentrically in the housing with said spacer centering said over-voltage arrester, and wherein said ceramic insulator, said first and second electrodes and said hollow-cylindrical varistor having approximately the same outside diameter which is less than said inside diameter of said container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification