Switch Cabinet Test Trolley With Automated Power Switching
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Solution Overview
Problem
Conventional medium-voltage switch cabinet testing systems require manual operation, leading to increased labor intensity, low efficiency, high error risk, and safety hazards due to intricate operations and frequent tool switching, which affect the accuracy and reliability of test data.
Innovation Solution
A test trolley with integrated DC and AC power supply modules, automated control unit, and measurement devices that facilitate automated testing procedures, reducing manual labor and improving safety and accuracy by intelligently managing switch cabinet testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used for switch cabinet testing, then operational flexibility is maintained, but labor intensity increases and testing efficiency decreases
Solution Approach 1:
The test trolley is designed as an autonomous testing system that performs testing operations without requiring manual intervention. The control unit automatically controls the power supply device, switching device, and measurement device to complete testing procedures, allowing the system to serve itself and eliminate the need for operator skill and manual labor while maintaining operational flexibility through programmable test sequences.
2Adaptability or versatility
If manual operation is used for switch cabinet testing, then adaptability to different test configurations is maintained, but error risk increases
Solution Approach 1:
The control unit receives real-time feedback from the measurement device regarding test results and automatically adjusts testing parameters or terminates testing when criteria are met. This closed-loop control ensures accurate adaptation to different test configurations while eliminating human error through automated decision-making based on measured values and predetermined test criteria.
3Adaptability or versatility
If frequent switching between testing tools is performed, then comprehensive testing coverage is achieved, but time consumption increases
Solution Approach 1:
The test trolley integrates the power supply device, switching device, and measurement device into a single unified platform. This consolidation eliminates the need to switch between multiple separate testing tools while maintaining comprehensive testing coverage through the integrated system's ability to perform all required tests sequentially without manual intervention.
4Ease of operation
If manual disassembly and assembly of switch cabinet components is performed, then testing access is achieved, but damage to switch cabinet body occurs
Solution Approach 1:
The test trolley uses electrical connection interfaces that can be connected and disconnected without mechanical disassembly of the switch cabinet body. The automated switching device electrically connects to test points through non-invasive interfaces, eliminating the need for manual disassembly and assembly of cabinet components while maintaining full testing access and preventing physical damage to the cabinet structure.
Data Source
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AI summary
The present invention relates to a test trolley for a switch cabinet, an automatic testing system comprising the test trolley, and a testing assembly for a medium-voltage power distribution cabinet. The test trolley comprises: a power supply device, for supplying a test electrical signal to the switch cabinet when the switch cabinet enters a testing procedure; a switching device, comprising multiple switches, each switch being used to connect the power supply device to a corresponding one of the multiple test points or to a neutral point; a control unit, configured to selectively control the on/off switching of the switches in the switching device; and a measurement device, configured to selectively measure a current value and/or a voltage value on at least one of the multiple phase power supply circuits under the control of the control unit, and feed a measurement result back to the control unit, wherein the control unit determines electrical performance of the switch cabinet on the basis of the measurement result provided by the measurement device.