Fault rapid detector and detection method

Abstract

The invention provides a fault rapid detector and a detection method. The fault rapid detector comprises a power supply assembly, an operation indicating lamp and a detection branch. The power supplyassembly comprises a power supply switch for overload protection; the operation indicating lamp is electrically connected with the test branch; the detection branch is electrically connected with theswitching-on branch, the switching-off branch and the energy storage branch; the detection branch comprises a detection indicating lamp and a detection switch connected with the detection indicating lamp in parallel; the resistance value of the detection indicating lamp is not lower than 7 / 3 times of the resistance value of the detected branch circuit, wherein tested branch is a switching-on branch / switching-off branch / energy storage branch. According to the technical scheme provided by the embodiment of the invention, the on-off state of the detected branch can be directly observed through the indicating lamp, and the detected branch can be controlled to be under-voltage and cannot be started while the on-off state of the detected branch is detected by utilizing a series voltage divisionprinciple; then, the detection switches are closed in sequence, the corresponding detected branches can be controlled to be started in sequence, and when the power switch trips, it can be known that the detected branches are short-circuited.

Description

technical field [0001] The application relates to the technical field of electric power equipment, in particular to a rapid fault detector and a detection method. Background technique [0002] The handcart is the main part of the withdrawable switchgear. During the maintenance of the handcart switch, it is not clear whether the fault comes from the cabinet itself or the handcart switch in the switchgear, so it must be eliminated item by item. At present, it is all through small clips. Use a multimeter to test the connection with the aviation plug. The pins on the aviation plug are many and closely arranged. Frequent connections are required during detection, and the handcart switch is manually operated. The operation is complicated and error-prone, and the maintenance speed is slow. affect the normal power supply. Contents of the invention [0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a rapid fault tester and a ...

AI Technical Summary

Problems solved by technology

[0002] The handcart is the main part of the withdrawable switchgear. During the maintenance of the handcart switch, it is not clear whether the fault comes from the cabinet itself or the handcart switch in the switchgear, so it must be eliminated item by item. At present, it is all through small clips. Use a multimeter to test the connection with the aviation plug. The pins on the aviation plug are many and closely arranged. Frequent connections are required during detection, and the opening and closing of the handcart switch is manually operated. The operation is complicated and error-prone, and the maintenance speed is slow. Affect normal power supply

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