Circuit breaker

Patent metadata

Field	Value
Publication number	US-11710611-B2
Application number	US-201917275784-A
Country	US
Kind code	B2
Filing date	Sep 5, 2019
Priority date	Sep 12, 2018
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A circuit breaker for connecting at least two line sections in an interruptible manner has at least one pair of vacuum tubes, each with a stationary switching contact and a movable switching contact. The switching contacts of the vacuum tubes are electrically connected in series. The movable switching contacts of the vacuum tubes are coupled to a common actuator and can be simultaneously switched by a movement of the actuator.

First claim

The invention claimed is:

1. A circuit breaker for an interruptible connection of at least two sections of line, the circuit breaker comprising:
a pair of vacuum tubes each having a fixed switching contact and a movable switching contact, said switching contacts of said pair of vacuum tubes being electrically connected in series, and said vacuum tubes being arranged in a common housing;
a common actuator coupled to said movable switching contacts of said vacuum tubes and being configured to be simultaneously switched by a movement of said actuator; and
a common actuating element coupling said movable switching contacts to said actuator;
said pair of vacuum tubes being one of three pairs of vacuum tubes;
said switching contacts of said vacuum tubes of each said pair are electrically connected in series with two sections of line;
said pairs of vacuum tubes are disposed at a spacing distance from one another in each case in a longitudinal direction of said actuating element;
said actuating element being coupled to said movable switching contacts of said vacuum tubes of said three pairs.

2. The circuit breaker according to claim 1 , wherein said common actuating element is a rotating shaft or a linearly movable actuating element.

3. The circuit breaker according to claim 1 , wherein said common actuating element is a crankshaft.

4. The circuit breaker according to claim 1 , further comprising connecting rods respectively coupling each of said movable switching contacts of said vacuum tubes to said common actuating element.

5. The circuit breaker according to claim 4 , wherein at least one of said actuating element or said connecting rods consist of an electrically insulating material.

6. The circuit breaker according to claim 5 , wherein said electrically insulating material is at least one material selected from the group consisting of glass-fiber-reinforced plastic and Kevlar®-reinforced plastic.

7. The circuit breaker according to claim 1 , wherein said vacuum tubes of said pair of vacuum tubes are arranged at an angle to one another such that said movable switching contacts are directed toward and coupled to said actuating element, and wherein said actuating element is arranged between said vacuum tubes.

8. The circuit breaker according to claim 1 , wherein said actuator is an electric motor.

9. The circuit breaker according to claim 1 , wherein said common housing is a dead-tank circuit breaker housing or a live-tank circuit breaker housing.

10. The circuit breaker according to claim 1 , wherein said housing is formed with feedthroughs and each of said vacuum tubes is arranged in a respective said feedthrough, and each of the sections of line is fed through a respective said feedthrough into the housing.

11. The circuit breaker according to claim 10 , wherein said feedthroughs are arranged at an angle relative to one another in a housing top of said housing, and said actuating element is arranged between and below said feedthroughs.

Assignees

• Siemens Energy Global Gmbh & Co Kg

Inventors

• Kosse Sylvio
• Nikolic Paul Gregor

Classifications

• H01H33/6664 Primary

  with pivoting movable contact structure · CPC title

• H01H33/14

  Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc · CPC title

• H01H2033/6667

  Details concerning lever type driving rod arrangements · CPC title

• H01H33/666 Primary

  Operating arrangements · CPC title

• H01H3/46

  using rod or lever linkage, e.g. toggle · CPC title