Remote control constant current source with phase selection connection function and control method

Abstract

The invention relates to a remote control constant current source with the phase selection connection function and a control method. The remote control constant current source is characterized by comprising an industrial control computer, an industrial touch display screen and a current-stabilizing power supply, wherein the industrial touch display screen is connected with the industrial control computer through a matching cable; and the current-stabilizing power supply comprises a switching power supply, a signal processing unit, a thyristor control unit, an output transformer and a constantcurrent source circuit. When the performances of a circuit breaker are detected, the detected circuit breaker can be prevented from detaching from a dispersed power distribution loop, thereby greatlysaving manpower, physical resources and financial resources; the constant current source can realize remote control and solve the status quo that a vehicle can not enter the using scene; furthermore,the constant current source has the phase selection connection function, precise current is provided for short-circuit breaking testing of part of the circuit breaker, and whether breaking time of the circuit breaker is reasonable or not can be judged correctly.

Description

technical field [0001] The invention belongs to a circuit breaker test bench, in particular to a remote-controlled constant current source and a control method with a phase-selection connection function. Background technique [0002] Low-voltage electrical appliances are the basic components of the mechanical industry, and the performance and quality of their products directly affect the reliable operation of power systems and industrial control systems. Generally, the product will run continuously after it is put into operation, and it will be detected only when a fault occurs. However, special departments such as aerospace and military will regularly test product performance and replace circuit breakers with problems in time. At present, the circuit breaker can only be taken out of the power distribution circuit and transported to the laboratory for regular testing. Once the circuit breaker is installed in the power distribution cabinet, it is very difficult to remove an...

AI Technical Summary

Problems solved by technology

At present, the circuit breaker can only be taken out of the power distribution circuit and transported to the laboratory for regular testing

Once the circuit breaker is installed in the power distribution cabinet, it is very difficult to remove and install; the instantaneous test of some switches needs to be connected to the power supply at a fixed phase to assess the short-circuit breaking capacity of the circuit breaker, but the power supply of the general laboratory The equipment does not have this function, and the transient test cannot be carried out completely in accordance with the requirements of national standards, and correct judgments cannot be made

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