CT-ratio-adjustable vacuum switch
A vacuum switch and switch technology, applied in the direction of electric switch, high voltage/high current switch, high voltage air circuit breaker, etc., can solve the problems of high technical level requirements, inconvenient operation, high risk, etc., and achieve the reduction of technical requirements, The effect of reducing the risk of electrical accidents and the convenience of use and maintenance
Inactive Publication Date: 2016-07-13
航天银山电气有限公司
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Problems solved by technology
It requires high technical level of operators, the operation is inconvenient, and it is easy to make mistakes, and it is a high-altitude operation, which is very dangerous
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[0020] see figure 1 , figure 1 It is the front view of the vacuum switch of the present invention. A vacuum switch with adjustable CT ratio of the present invention comprises a switch body 1, a mounting bracket 2 is fixedly arranged on the top of the switch body 1, a mechanism cover 3 is arranged in front of the switch body 1, and the mechanism cover 3 is equipped with There is a vacuum switch operating mechanism, the two ends of the switch body 1 are equipped with inlet and outlet bushings 4, the sides of the inlet and outlet bushings 4 are provided with current transformers, and the sides of the inlet and outlet bushings 4 are also provided with secondary terminals box 5, the bottom of the secondary terminal box 5 is provided with a changeover switch 6, and the connection terminal of the current transformer is connected with the changeover switch 6; further, the mechanism cover 3 is also provided with a device for mapping the energy storage state of the vacuum switch Energ...
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The invention discloses a CT-ratio-adjustable vacuum switch. The CT-ratio-adjustable vacuum switch includes a switch body, wherein a mounting support, a mechanism cover and an incoming and outgoing line casing pipe are arranged on the switch body; a vacuum switch operation mechanism is arranged in the mechanism cover; a secondary terminal box is also arranged besides the incoming and outgoing line casing pipe; a change over switch is arranged on a secondary terminal; and a connection terminal of a current transformer is connected with the change over switch. For the CT-ratio-adjustable vacuum switch, adjusting of the ratio of the current transformer can be realized by means of direct turning of the change over switch and having no need for using other drawings or wire-changing tools, so that the operation difficulty is reduced; operation is simple and less error-prone; the risk is reduced and workers can be convenient to use and maintain the CT-ratio-adjustable vacuum switch; and the safety is guaranteed. At the same time, as wire changing does not need, the situation that wiring is not firm during the connection process of a connection wire and a connection terminal is avoided, so that the risk of generation of an electrical accident is maximally reduced. The CT-ratio-adjustable vacuum switch has the advantages of being simple in operation, being less error-prone, and being high in safety.
Description
technical field [0001] The invention relates to the field of vacuum switches, in particular to a vacuum switch with adjustable CT transformation ratio. Background technique [0002] In the field of high-voltage electrical equipment technology, vacuum switches are mainly used for breaking and closing load currents, overload currents and short-circuit currents in power systems. They are suitable for protection and control in substation systems, and are also suitable for complex overhead lines and frequent operations. It is an essential device for smart grid. ZW20-12 vacuum circuit breaker and FZW28-12 vacuum load switch are rated voltage 12kV, three-phase AC 50Hz outdoor high-voltage switchgear, switches are insulated by SF6, vacuum arc extinguished. [0003] The above-mentioned outdoor vacuum switch is generally equipped with A and C two-phase current transformers and zero-sequence current transformers. In order to meet the load requirements of different places of use, the ...
Claims
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IPC IPC(8): H01H33/66
CPCH01H33/6606
Inventor 韦柳涛赵开春
Owner 航天银山电气有限公司