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A New Type of Intelligent Controller Trip Circuit

A technology of intelligent controller and tripping circuit, which is applied in the direction of program control and electrical program control in circuit devices, sequence/logic controllers, etc., can solve problems such as false tripping of tripping circuits, and achieve avoidance of false tripping, The effect of high reliability and high integration

Active Publication Date: 2016-02-17
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the tripping circuit of the intelligent tripper in the prior art has the problem of false tripping, so as to provide a new type of intelligent controller tripping circuit with high reliability

Method used

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  • A New Type of Intelligent Controller Trip Circuit
  • A New Type of Intelligent Controller Trip Circuit
  • A New Type of Intelligent Controller Trip Circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structure of the trip circuit of the new intelligent controller of the present invention is as follows figure 1 As shown, it includes an anti-misoperation logic circuit 1, a level conversion circuit 2, a switch control circuit 3, and a trip actuator 4. See the specific circuit diagram figure 2 Shown.

[0036] The input terminal of the anti-misoperation logic circuit 1 receives two control signals output by the trigger control circuit, and realizes the function of preventing the malfunction of the circuit breaker caused by the interference of the control signal through the set logic relationship. In this embodiment, the trigger control circuit includes a microprocessor, the microprocessor includes a power terminal, and the microprocessor sends two control signals; the anti-misoperation logic circuit 1 includes three NAND gates And the first capacitor C1, the three NAND gates are the first NAND gate U1A, the second NAND gate U1B and the third NAND gate U1C. The two inpu...

Embodiment 2

[0046] On the basis of Example 1, see Figure 4 As shown, the anti-misoperation logic circuit 1 further includes a first resistor R1, one end of the first resistor R1 is connected to the output end of the third NAND gate U1C, and the other end is grounded.

Embodiment 3

[0048] On the basis of Examples 1 and 2, see Figure 5 As shown, the switch control circuit 3 further includes a filter circuit. The filter circuit includes a fourth resistor R4 and a second capacitor C2. After the fourth resistor R4 and the second capacitor C2 are connected in parallel, one end is connected to the field effect. The gate of the transistor T1 is grounded at the other end. The second capacitor C2 and the fourth resistor R4 are used to stabilize the operating point voltage of the gate of the field effect transistor T1.

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Abstract

The invention discloses a novel intelligent controller trip circuit, which comprises a misoperation prevention logic circuit, a level switching circuit, a switch control circuit and a trip actuator. The misoperation prevention logic circuit prevents interference of a control signal through logical relationship calculus, the level switching circuit converts low voltage into high voltage and is used for increasing driving voltage of the switch control circuit, and the switch control circuit is used for controlling movement of the trip actuator so as to push a breaker to trip. The novel intelligent controller trip circuit effectively avoids the problem of false tripping existing in the prior art, is quite stable and reliable in operation, and is quick in tripping response.

Description

Technical field [0001] The invention relates to a trip device of a circuit breaker, in particular to a new type of intelligent controller trip circuit, belonging to the technical field of low-voltage electrical appliance protection. Background technique [0002] The intelligent trip unit is based on the modern microprocessor, and realizes the intelligent control of the circuit breaker through signal acquisition, data processing and fault diagnosis. The trip circuit is the final circuit of the intelligent trip unit. It is the actuator of the single-chip microcomputer command. It receives the trip command issued by the single-chip microcomputer, and outputs the drive flux converter to disconnect the circuit breaker. The trip circuit is stable and reliable. The performance is directly related to whether the circuit breaker is disconnected, whether the power grid is out of power, and the performance of the entire trip unit. [0003] The trip circuit of the electronic intelligent trip ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H1/00G05B19/05
Inventor 洪进仁白建社
Owner DELIXI ELECTRIC