公开(公告)号：US10892128B2

公开(公告)日：2021-01-12

申请号：US16366181

申请日：2019-03-27

Applicant: ABB S.p.A.

Inventor： Wensheng Liu ,  Jiancheng Ren ,  Baiqin Liang

IPC: H01H71/12 ,  H01H71/58 ,  H01H71/10 ,  H01H83/14

Abstract: The present application provides a residual-current protection device and a tripper. The residual-current protection device comprises: a flux transformer receiving a residual-current signal; a tripping output element outputting ON/OFF signals; an energy storage mechanism adapted to switch between an energy storage state and an energy release state, the energy storage mechanism having a locking unit that locks the energy storage mechanism in the energy storage state; and a transmission mechanism braked by the flux transformer, which drives the tripping output element to move and drives state of the energy storage mechanism to switch; the transmission mechanism comprising: a first rack cooperating with the locking unit, a second rack driving the tripping output element, and a reduction gear with a big gear engaged with the first rack and a small gear engaged with the second rack. By means of the gear rack transmission mechanism of the residual-current protection device, reduction transmission can be effected, driving force needed by energy storage may be reduced, and thus design requirements as high transmission efficiency, easy processing and assembly as well as low costs can be satisfied.

公开(公告)号：US20190304730A1

公开(公告)日：2019-10-03

申请号：US16366181

申请日：2019-03-27

Applicant: ABB S.p.A.

Inventor： Wensheng Liu ,  Jiancheng Ren ,  Baiqin Liang

IPC: H01H71/12 ,  H01H71/58

Abstract: The present application provides a residual-current protection device and a tripper. The residual-current protection device comprises: a flux transformer receiving a residual-current signal; a tripping output element outputting ON/OFF signals; an energy storage mechanism adapted to switch between an energy storage state and an energy release state, the energy storage mechanism having a locking unit that locks the energy storage mechanism in the energy storage state; and a transmission mechanism braked by the flux transformer, which drives the tripping output element to move and drives state of the energy storage mechanism to switch; the transmission mechanism comprising: a first rack cooperating with the locking unit, a second rack driving the tripping output element, and a reduction gear with a big gear engaged with the first rack and a small gear engaged with the second rack. By means of the gear rack transmission mechanism of the residual-current protection device, reduction transmission can be effected, driving force needed by energy storage may be reduced, and thus design requirements as high transmission efficiency, easy processing and assembly as well as low costs can be satisfied.

公开(公告)号：US20240153720A1

公开(公告)日：2024-05-09

申请号：US18548809

申请日：2021-04-28

Applicant: ABB S.P.A.

Inventor： Jianqi Lin ,  Wensheng Liu ,  Jien Su

IPC: H01H9/26

CPC classification number: H01H9/26

Abstract: A transfer apparatus for a dual-power transfer switch and an associated dual-power transfer switch. The transfer switch includes a pair of pushing members adapted to be moved in opposite directions to control circuit breakers for the dual-power transfer switch in a mutually different manner; a transmission arm rotatably arranged between the pair of pushing members; a pair of pins arranged on radial ends of the transmission arm; and a pair of elastic reset components arranged on the pair of pushing members.

公开(公告)号：US20240029986A1

公开(公告)日：2024-01-25

申请号：US18254791

申请日：2020-12-14

Applicant: ABB S.P.A.

Inventor： Wensheng Liu ,  Jiancheng Ren ,  Qi Zhou ,  Yanfang Ye

IPC: H01H71/10

CPC classification number: H01H71/10

Abstract: An adjustment mechanism for a circuit breaker and the corresponding circuit breaker. The adjustment mechanism includes a pin adapted to move with respect to a base part of the circuit breaker along a predefined path; a first linkage coupled to the base part and adapted to drive a first terminal of the circuit breaker to move towards or away from the base part; and a second linkage coupled to a second terminal of the circuit breaker and adapted to be actuated by the pin to drive the second terminal to move towards or away from the base part. The groove has a first segment; and the second linkage is actuated by the pin and the first linkage is not actuated by the pin when the pin moves within the first segment in a first direction along the predefined path.