A cabinet door safety interlock device for inverter cabinet
A technology of safety interlocking device and cabinet door lock, applied in the field of electrical engineering, can solve problems such as affecting personal safety, personnel safety hazards, high voltage, etc., and achieve the effect of improving safety and reducing safety hazards.
Active Publication Date: 2017-06-13
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
[0004] However, the modern frequency conversion speed regulation method generally adopts the AC-DC-AC frequency conversion speed regulation system, and the AC power of the power grid is rectified into DC power. Energy storage function, even if the AC output side of the inverter has stopped, there is still a high voltage in the intermediate DC link, which brings great safety hazards to personnel. If the operator opens the cabinet door at will for other operations at this time , will be very likely to touch high voltage and affect personal safety
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[0037] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0038] In the prior art, the commonly used interlocking mechanism of the inverter cabinet door is generally directly controlled by a travel switch. This method is mainly installed on the cabinet through a travel switch. When the cabinet door is closed, the travel switch is...
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The invention discloses a cabinet door safety interlock device for a frequency converter cabinet. The device comprises a cabinet door lock, a state monitor used for detecting whether a frequency converter is electrified, and a locking device. The invention further discloses a cabinet door safety interlock method for the frequency converter cabinet. The method comprises the steps of electrification judgment, wherein whether the frequency converter is electrified is judged; locking, wherein a cabinet door is locked and can not be open if the frequency converter is electrified. By the adoption of the device, the cabinet door of the frequency converter can be locked when the frequency converter is electrified, an alarm can be given to far-end operation personnel when the cabinet door of the frequency converter is open, and then the safety performance of the frequency converter cabinet is improved greatly.
Description
technical field [0001] The invention relates to the field of electrical engineering, in particular to a cabinet door safety interlock device and method for frequency converter cabinets. Background technique [0002] In the application of modern high-power frequency conversion devices, with the increase of the power of the traction motor, the voltage level of the frequency converter controlling the traction motor is getting higher and higher, and the requirements for the safe operation of personnel are also getting higher and higher. There is not enough safety awareness during the operation process. When there is still high voltage in the inverter, the door of the inverter cabinet is opened and closed at will, which brings double safety hazards to personnel and equipment. Although there are high-voltage indicators and equipment running Visual reminders such as status warnings can remind personnel to pay attention to the high-voltage operation of the equipment, but due to the ...
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IPC IPC(8): E05B65/52E05B47/06E05B45/06E05B15/14E05B15/10
Inventor 何正科罗成杨进峰李彦涌胡家喜张文进姜耀伟罗剑波刘猛武丹龚毅
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST