摘要:
The invention concerns a circuit-breaker control device designed to open and close said electric power interrupting device comprising a mobile contact said control device including a motor (3) with rotary output shaft (12) and being connected to power supply means (4 to 9) and actuating means transforming the motor output displacement into a contact displacement, said device further including a mechanical spring arrangement contributing to the opening and closure of the contact. The invention is characterized in that the actuating means comprise as assembly of articulated elements for linking the rotary shaft and the ring, and when the contact is in closed position, the assembly of articulated elements is proximate a dead center position called opening dead center, the opening spring (15) not being capable of driving it towards the opening position until it passes beyond said dead center position when said contact is being opened.
摘要:
The invention relates to a device for controlling an electrical appliance designed to be able to perform the following in succession: - during a phase of opening a moving contact, moving the connection end of the moving contact (2a) provided on an output member (2) from point P1 to point P2 under the effect of a mechanical opening spring (12) that sets in motion a moving abutment element (11) which, through butting against it, drives the output member (2); during a phase of resetting the spring, setting the moving element (11) in motion under the effect of a switching-on of a motor (8), keeping the end (2a) at the point P2; and - during a phase of closing the moving contact, moving the connection end (2a) from point P2 to point P1, again under the effect of a switching-on of the motor.
摘要:
The invention relates to a method for determining the moment of closure of a circuit breaker in a three-phase high-voltage electric network after contact (7A, 8A, 7B, 8B, 7C, 8C) separation in the presence of an error in one of the three phases A, B or C. Determination of the moment of closure comprises the following stages: measurement of voltages ULA0, ULB0 and Ulc0, measurement of voltage USA0, determination of voltage US A0, US B0 and US c0, calculation of the differences ULAB, ULAC and ULBC, calculation of the differences USAB, USAC and USBC, determination of the moment of closure on the basis of the voltage differences.
摘要:
The invention concerns a circuit-breaker control device designed to open and close said electric power interrupting device comprising a mobile contact said control device including a motor (3) with rotary output shaft (12) and being connected to power supply means (4 to 9) and actuating means transforming the motor output displacement into a contact displacement, said device further including a mechanical spring arrangement contributing to the opening and closure of the contact. The invention is characterized in that the actuating means comprise as assembly of articulated elements for linking the rotary shaft and the ring, and when the contact is in closed position, the assembly of articulated elements is proximate a dead center position called opening dead center, the opening spring (15) not being capable of driving it towards the opening position until it passes beyond said dead center position when said contact is being opened.
摘要:
The invention relates to a method for determining the moment of closure of a circuit breaker in a three-phase high-voltage electric network after contact (7A, 8A, 7B, 8B, 7C, 8C) separation in the presence of an error in one of the three phases A, B or C. Determination of the moment of closure comprises the following stages: measurement of voltages ULA0, ULB0 and Ulc0, measurement of voltage USA0, determination of voltage US A0, US B0 and US c0, calculation of the differences ULAB, ULAC and ULBC, calculation of the differences USAB, USAC and USBC, determination of the moment of closure on the basis of the voltage differences.