Intelligent digital-variable delayed anti-flashover device
An anti-shaking and variable technology, applied in the direction of circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as inability to optimize coil energy consumption, coil parameter identification, and inaccurate time delay, etc., to achieve Automatic recognition of performance, improved versatility, and cost-saving effects
Inactive Publication Date: 2013-12-11
合肥欧萨天海电气技术有限公司
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Problems solved by technology
[0003] In order to overcome the shortcomings of different types of AC contactors in the prior art that need to be replaced with different devices, the present invention provides a digital variable time-delay intelligent anti-shaking device to solve the problem of not being able to optimize the performance of the coil in the prior art. Consumption and coil parameter identification, time delay inaccurate and other issues, when the line power supply is normal, energy storage and voltage stabilization, in the case of line power failure, keep any user-set 0-9.9s time of the coil and then release it, and at the same time counting
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[0032] see figure 1 , 23. A digital variable delay intelligent anti-shake device, including variable rectification output unit UNIT A, fast charging energy storage voltage stabilization and voltage detection unit UNIT B, MCU intelligent algorithm and on-off sensor detection unit UNIT C , display and key unit UNIT D, coil drive unit UNIT E, variable rectification output unit UNIT A includes wiring drawn from 220V AC power supply, and the wiring is connected in series with insurance F1, protection varistor RV1 and harmonic filter capacitor C6 Then input to the controllable rectification full-bridge circuit composed of thyristor SCR1, SCR2 and diodes VD1, VD2. The two ends of the controllable rectification full-bridge circuit are respectively connected in parallel with diode VD3 and adjustable resistor RV5, of which diode VD3 is an AC contact The adjustable resistor RV5 is for DC overvoltage protection; it also includes transformer T1, the primary of transformer T1 is connected ...
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The invention discloses an intelligent digital-variable delayed anti-flashover device, comprising a variable rectification output unit A, a quick charge energy-storage voltage-stabilization and voltage detection unit B, an MCU (microprogrammed control unit) intelligence algorithm and an on-off sensor detection unit C, a display and keying unit D and a coil driving unit E. Under the condition that the structure of an AC (alternating current) contactor is not damaged, the device provided by the invention learns and acquires DC (direct current) parameters of the AC contactor automatically and reduces the power consumption of the contactor maximally in accordance with an MCU soft algorithm; and according to user demands, any off-delay operation drop-out time can be set and flashover times memory can be realized within 0-9.9 seconds.
Description
technical field [0001] The invention relates to an energy-saving and protection device in the field of power supply and distribution, in particular to a digital variable delay intelligent anti-sway device. Background technique [0002] The drive of the contactor is divided into DC drive and AC drive. The DC drive is characterized by high coil impedance, and AC-DC conversion is required in most applications. The AC drive is simple and direct, and the coil AC impedance is low, saving material costs. In order to overcome the swaying phenomenon, most of the practical applications use delayed power-off contactors for protection. The advantage of protection is to convert AC drives into low-voltage DC drives and overcome the disadvantages of AC drives such as vibration, noise, and high power consumption. The DC drive of the AC contactor requires a relatively high voltage when the contactor is started. After starting, only a low voltage is required to maintain the action. I...
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IPC IPC(8): H02H3/247
Inventor 李罗保张克贵
Owner 合肥欧萨天海电气技术有限公司