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US 2018/0005753 A1Published application
Permanent magnet drive on-load tap-changing switch
OwnerJunqi DIAOinventor
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OwnerJunqi DIAOinventor
Estimating the term…
A permanent magnet drive on-load tap-changing switch including a changing switch circuit that includes structurally identical odd- and even-numbered tap-changing circuits. The circuits include working contactors and dual-contact synchronous transition contactors made of primary and secondary contactors. The contactors each face directly a moving contactor, which are connected in parallel. A permanent magnet is fixed on each moving contactor and face directly on the other extremity thereof a moving contactor driving mechanism. The mechanism changes a force applied to the magnets, allowing the moving contactors to come into contact with or be separated from the working and transition contactors, thus implementing changeover from one tap to another tap. The switch is structurally simple and convenient to use, obviates the need for a high-speed mechanism, implements changing by the direct actions of the contactors, operates at high speed and reliably, and has a low failure rate and an extended service life.
A permanent magnet drive on-load tap-changing switch, comprising a changing switch circuit, wherein the said changing switch circuit comprises an odd-numbered tap-changing circuit and an even-numbered tap-changing circuit that are structurally identical, wherein the tap-changing circuits are constituted by working contactors, and dual-contact synchronous transition contactors consisting of primary contactors and secondary contactors, and the working contactor is connected with the primary contactor by trigger transmitter and transition resistance, and a primary contactor of a tap-changing circuit is connected to the secondary contactor of another tap-changing circuit by a high-voltage thyristor, while the said trigger transmitter provides the high-voltage thyristor connected to the secondary contactor of the same tap-changing circuit with trigger current, characterized in that the said working contactors and the dual-contact synchronous transition contactors respectively correspond to a moving contactor, the moving contactors are connected in parallel to each other, permanent magnets are fixed bijectively on the moving contactors, the permanent magnets face directly at the other extremity thereof a moving contactor driving mechanism, wherein the moving contactor driving mechanism changes a force applied to the permanent magnets and thereby allowing the moving contactors to come into contact with or be separated from the working contactors and the transition contactors, thus implementing changeover from one tap to another tap.
A permanent magnet drive on-load tap-changing switch, comprising a changing switch circuit, wherein the said changing switch circuit comprises an odd-numbered tap-changing circuit and an even-numbered tap-changing circuit that are structurally identical, wherein the tap-changing circuits are constituted by working contactors, and dual-contact synchronous transition contactors consisting of primary contactors and secondary contactors, and the working contactor is connected with the primary contactor by trigger transmitter and transition resistance, and a primary contactor of a tap-changing circuit is connected to the secondary contactor of another tap-changing circuit by a high-voltage thyristor, while the said trigger transmitter provides the high-voltage thyristor connected to the secondary contactor of the same tap-changing circuit with trigger current, characterized in that the said working contactor and the said dual-contact synchronous transition contactor are connected to a permanent magnet on one side, while they are directly face to a moving contactor on the other side, and the moving contactors are connected in parallel to each other, while each moving contactor is connected to the moving contactor driving mechanism, wherein the moving contactor driving mechanism changes a force applied to the permanent magnets and thereby allowing the moving contactors to come into contact with or be separated from the working contactors and the transition contactors, thus implementing changeover from one tap to another tap.
Dependencies are inferred from the claim text.