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Instantaneous power failure preventing delayer

A delayer and anti-sway technology, applied in relays, circuits, electrical components, etc., can solve problems such as secondary faults and damaged devices, achieve low cost, reduce power consumption, and solve the effects of instability

Inactive Publication Date: 2014-06-25
SHAANXI AN DE SEN ELECTRICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the above-mentioned technical problems, the present invention provides an anti-sway electric delay device, which solves the problems of secondary faults caused by the above-mentioned switching circuit not working and frequent switching damage to the device

Method used

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Embodiment Construction

[0028] see figure 1 As shown, it is a structural schematic diagram of the anti-sway delay device proposed by the present invention.

[0029] Such as figure 1 As shown, an anti-shake electric delay device includes:

[0030] Filtering unit 1, configured to filter the connected grid voltage and output the filtered voltage signal;

[0031] The rectification energy storage unit 2 is connected to the output terminal of the filter unit, rectifies the filtered voltage signal to output a DC voltage, and stores electric energy;

[0032] The DC / DC conversion unit 3 converts and outputs the DC voltage output by the rectified energy storage unit;

[0033] A sampling unit 6, the sampling unit is arranged on the power grid, and samples and outputs the voltage of the power grid;

[0034] The single-chip microcomputer control unit 5, the single-chip microcomputer control unit is connected with the DC / DC conversion unit, receives the sampling information of the sampling unit, and outputs co...

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Abstract

The invention provides an instantaneous power failure preventing delayer which comprises a filter unit, a rectification energy storage unit, a DC / DC conversion unit, a sampling unit, a single chip microcomputer control unit, a display setting unit and a switching unit. By means of the instantaneous power failure preventing delayer, a instantaneous power failure preventing delayer circuit is started to be adaptive to working voltage of an alternating-current contactor, reliability of full-range start is guaranteed, work of the instantaneous power failure preventing delayer circuit is maintained in the mode that the working voltage is converted to direct-current low voltage, the working mode substantially lowers power consumption of the alternating-current contactor, and energy is saved by more than 80%. When voltage fluctuation or an instantaneous power failure happens, work of the alternating-current contactor is directly maintained in a delayed mode, sectional model selection is not needed, universality is high, the size is small, and cost is low.

Description

technical field [0001] The invention relates to a time delay device, in particular to an anti-shake electric time delay device. Background technique [0002] During the operation of the power system, due to lightning strikes, short-circuit to ground, reclosing and automatic switching, external and internal grid faults, large-scale equipment start-up, etc., the grid fault is caused. The phenomenon of fluctuating or momentary power failure and recovery is called "shock power". [0003] AC contactors are widely used in low-voltage motor control systems, accounting for a considerable proportion. Due to the characteristics of the working principle of the AC contactor, when the power grid appears "shocking", it will cause a short-term power outage or low voltage in the working coil of the AC contactor, which is an important reason for the release of the AC contactor and the shutdown of the power failure. The international IEC standard stipulates that 80% of the rated voltage is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/18
Inventor 强红军
Owner SHAANXI AN DE SEN ELECTRICAL SCI
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