On-off mechanism for processing interphase faults
An on-off mechanism and inter-phase fault technology, which is applied to high-voltage air circuit breakers, electrical components, electrical switches, etc., can solve the problems of inability to realize the on-off operation of each phase independently, inconvenient to deal with inter-phase short-circuit faults, etc. Simple structure and the effect of cost control
Pending Publication Date: 2022-02-22
BAODING YUXIN ELECTRICAL TECH
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Problems solved by technology
However, this circuit breaker adopts a set of electric spring mechanism, which can only open or close three phases at the same time, and cannot realize the individual on-off operation of each phase, let alone maintain the conduction of a faulty phase and trip the other phases when a short circuit occurs between phases. Faulty phase, and then connect another fault to the ground or common wire operation, it is not convenient to deal with phase-to-phase short-circuit fault
Method used
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[0014] Below in conjunction with accompanying drawing and embodiment, the embodiment of the present invention will be further described in detail, and the following embodiment is used to illustrate the present invention, but not to limit the present invention.
[0015] Such as figure 1 , figure 2 with image 3 , Figure 4 As shown, the on-off device includes a sealed box 1, and the sealed box 1 is equipped with a first single-pole double-throw switch 2 (installed in phase A in this embodiment), a second single-pole double-throw switch 3 (installed in this embodiment) In phase C) and a third switch 4 (in this embodiment, in phase B). Both the first SPDT switch 2 and the second SPDT switch 3 include a first arc extinguishing chamber 201 and a second arc extinguishing chamber 202, the first arc extinguishing chamber 201 and the second arc extinguishing chamber 202 are located in the insulating box 12, The first static contact 203 is fixed in the first arc extinguishing chamb...
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The invention discloses an on-off mechanism for processing interphase faults. The on-off mechanism comprises two single-pole double-throw switches and a third switch, each single-pole double-throw switch comprises a first arc extinguish chamber and a second arc extinguish chamber, a first static contact and a second static contact are respectively arranged in the first arc extinguish chamber and the second arc extinguish chamber, a swinging lifting rod is arranged outside the first arc extinguish chamber, the two ends of the swing lifting rod are connected with a first moving contact and a second moving contact respectively, the swinging lifting rod can swing around a middle fulcrum, when the first moving contact makes contact with the first static contact, the second moving contact is separated from the second static contact, and when the second moving contact makes contact with the second static contact, the first moving contact is separated from the first static contact, and the first moving contact is electrically connected with the second moving contact. The on-off mechanism can realize conduction of one fault phase and enable the other fault phase to be grounded or share a lead, and has important practical value.
Description
technical field [0001] The invention relates to an on-off device for a circuit, in particular to an on-off mechanism for dealing with phase-to-phase short-circuit faults. Background technique [0002] At present, there are problems such as cumbersome operation, untimely, and inaccurate positioning in the treatment of phase-to-phase short-circuit faults in the power supply system, which affect the quality of power supply. Invention patent application 202011453631.0, invention patent application 202011453632.5, invention patent application 202110420475.6 and invention patent 202110420952.9 provide a treatment method for phase-to-phase short-circuit in the power supply system. According to this method, when a phase-to-phase short circuit occurs, one faulty phase is maintained and the remaining faults are switched off Phase, then connect another fault to the ground or common wire, and then make a live phase to connect to the ground or common wire to form a closed loop with the t...
Claims
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IPC IPC(8): H01H33/666H01H33/52H02H7/26
CPCH01H33/666H01H33/6664H01H33/52H02H7/26
Inventor 薛占钰邢进春杨贤丁同同闫正
Owner BAODING YUXIN ELECTRICAL TECH