Low voltage circuit breaker with a control device for re-closing said low voltage circuit breaker
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01H-071/66
H01H-003/22
H01H-037/32
H01H-071/14
H01H-071/04
출원번호
US-0235237
(2012-07-31)
등록번호
US-9734974
(2017-08-15)
우선권정보
IT-BG2011A0034 (2011-08-01)
국제출원번호
PCT/EP2012/064956
(2012-07-31)
§371/§102 date
20140127
(20140127)
국제공개번호
WO2013/017595
(2013-02-07)
발명자
/ 주소
Colombo, Franco
Antonello, Paolo
출원인 / 주소
ABB S.p.A.
대리인 / 주소
Polsinelli PC
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
The present invention refers to a low voltage circuit breaker with a control device for re-closing said low voltage circuit breaker. The control device is provided with an actuating element, comprising a shape memory material and operatively associated with maneuvering means for the circuit breaker.
The present invention refers to a low voltage circuit breaker with a control device for re-closing said low voltage circuit breaker. The control device is provided with an actuating element, comprising a shape memory material and operatively associated with maneuvering means for the circuit breaker. When this shape memory material performs a state transition, the actuating element causes the movement of said maneuvering means from a first operative position, associated with an open configuration of the circuit breaker, to a second operative position, associated with a closed configuration of the circuit breaker.
대표청구항▼
1. A low voltage circuit breaker comprising: a control device for re-closing said low voltage circuit breaker, said control device being operatively associated with a manoeuvring means of said circuit breaker;the manoeuvring means being transitionable between a first operative position, associated w
1. A low voltage circuit breaker comprising: a control device for re-closing said low voltage circuit breaker, said control device being operatively associated with a manoeuvring means of said circuit breaker;the manoeuvring means being transitionable between a first operative position, associated with an opening configuration of said circuit breaker, and a second operative position, associated with an closing configuration of said circuit breaker;an actuating element comprising a shape memory material transitionable between a martensite state having a relaxed length and an austenite state having a fully contracted length, and operatively associated with said manoeuvring means;the control device controlling the actuating element;wherein when the manoeuvring means is in the second operative position, the circuit breaker is conducting electricity, the control device maintains the shape memory material in the martensite state, and the shape memory material is at the relaxed length;wherein in response to the circuit breaker tripping the manoeuvring means moves from the second operative position to the first operative position, and the shape memory material in the martensite state stretches to a stretched length longer than the relaxed length;wherein the control device resets the circuit breaker after the trip by changing the shape memory material from the martensite state to the austenite state, which contracts the shape memory material from the stretched length to the fully contracted length to move the manoeuvring means from the first operative position to the second operative position;wherein, in response to the manoeuvring means moving from the first operative position to the second operative position during the reset, the control device transitions the shape memory material from the austenite state to the martensite state. 2. A low voltage circuit breaker, according to claim 1, wherein said actuating element causes the movement of said manoeuvring means, when said shape memory material is heated at a temperature that is higher than its own state transition temperature. 3. A low voltage circuit breaker, according to claim 1, wherein said actuating element comprises at least a cable, a lamina or a spring made of a shape memory material. 4. A low voltage circuit breaker, according to claim 1, wherein said control device controls a power source providing an electric current to heat (IH) said shape memory material. 5. A low voltage circuit breaker, according to claim 1, wherein said manoeuvring means comprise a manoeuvring lever, said actuating element being operatively connected with said manoeuvring lever. 6. A low voltage circuit breaker, according to claim 1, wherein said manoeuvring means comprise a manoeuvring lever, operatively connected with a rearming lever, said actuating element being operatively connected with said rearming lever. 7. A low voltage circuit breaker, according to claim 1, wherein said control device is placed in an autonomous control module. 8. A low voltage circuit breaker, according to claim 2, wherein said actuating element comprises at least a cable, a lamina or a spring made of a shape memory material. 9. A low voltage circuit breaker, according claim 2, wherein said control device controls a power source providing an electric current to heat (IH) said shape memory material. 10. A low voltage circuit breaker, according claim 3, wherein said control device controls a power source providing an electric current to heat (IH) said shape memory material. 11. The circuit breaker of claim 1, wherein the relaxed length is the same as the fully contracted length.
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