Portable power supply module tester

Abstract

Provided is a portable power supply module tester. The appearance of the tester is a suitcase. An aluminum-plastic high-density plate is used as a box body material. A power interface shaped like a Chinese character 'pin' is installed on the vertical face of the rear side of the box body, a small pull-out door is formed in the vertical face of the right side of the box body, a JMD-37 connector isinstalled in the box body, and an air circuit breaker, an LED indicator lamp, a voltmeter, a test starting button, a wiring terminal and a grounding pile are evenly arranged on a panel on the front face of the box body, which can be seen by opening the upper cover of the box body. The portable power supply module tester is suitable for various types of AC / DC power supply modules on an intelligentpower supply screen used by a railway electric service system.

Description

technical field [0001] With the advancement of railway modernization, the smart power screens used in the signal machinery rooms of railway stations under the jurisdiction of the electric power section have gradually replaced the old-fashioned power screens. The invention is a device for measuring electrical parameters of a power supply module of an intelligent power supply screen, which is suitable for on-load testing of multi-standard, AC-DC, and variable-frequency intelligent power supply modules in use. Background technique [0002] At present, for the electrical system of the national railway department, the electrical parameter test of the power module of the smart power screen in the grassroots power supply work area is to directly measure the corresponding gear of the multimeter. High-level professional institutions use large modules to test cabinets. These two testing methods have the following shortcomings: [0003] Direct measurement with a multimeter has the fol...

AI Technical Summary

Problems solved by technology

[0004] 1. Because the test point is inside the power screen, using the test pen to overlap the test point may cause the tester to get an electric shock, causing personal safety hazards

[0005] 2. Due to the carelessness of the operator, improper setting of the gear position of the multimeter will cause a short circuit of the power supply, generate an electric arc, cause personal injury, and burn out the test instrument and terminal

[0006] 3. The workload is heavy, and it is easy to make mistakes to overlap the test points

[0007] 4. The online measurement must be carried out under the precondition that the module has been installed on the power screen and the power is turned on

It cannot be avoided that already damaged or faulty modules are installed on the power screen

[0008] 6 It is impossible to know the electrical hidden faults caused by handling, knocking and bumping of the new power supply module shipped by the manufacturer. If this module is installed on the power supply equipment in use, it will cause the railway signal lights and track circuits to be powered off or The voltage output was abnormal, which seriously affected the normal operation of all trains in the uplink and downlink sections of this station

[0009] Although it is safe and reliable to measure with a large module test cabinet, it is too bulky to move and can only be installed in a fixed place

And the price of the radio test cabinet is high

Not suitable for field use

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