Movable Supply Module for Electrical Switching Device
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Solution Overview
Problem
Input-voltage powered supply modules in electrical switching devices are vulnerable to dielectric faults during electrical tests, leading to potential damage and the need for full replacement.
Innovation Solution
A trip for an electrical switching device with a moveable supply module that can be easily disconnected and kept safe during tests, featuring latching and stop mechanisms to secure the module in disconnected positions, allowing for safe extraction and minimizing risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the supply module is fixed in the electrical switching device, then the device structure is simple and reliable, but the supply module cannot be easily disconnected or protected during electrical tests
Solution Approach 1:
The trip is divided into separate functional modules: a protective housing, a supply module with transformer and terminals, and latching means. This segmentation allows the supply module to be independently moved and disconnected from the protective housing during electrical tests, protecting it from damage while maintaining a relatively simple overall structure when assembled.
Solution Approach 2:
The supply module is made movable with respect to the protective housing through latching means that can transition between latched and unlatched positions. This dynamic capability enables the supply module to be easily disconnected and protected during electrical tests, while remaining securely connected during normal operation, thus improving reliability without excessive complexity.
2Ease of operation
If the supply module is made movable with latching means, then the module can be easily disconnected during tests, but the device complexity increases
Solution Approach 1:
The latching means are designed to automatically engage and disengage the supply module from the protective housing without requiring external tools or complex mechanisms. The stop means provide automatic positioning limits, allowing easy manual operation for disconnection during tests while minimizing the complexity of control systems required.
3Reliability
If the supply module remains connected during electrical tests, then the device structure is maintained, but the supply module is vulnerable to dielectric faults and damage
Solution Approach 1:
The latching means are pre-configured to securely hold the supply module in the protective housing during normal operation, but can be quickly released when needed for electrical tests. This preliminary preparation allows the supply module to be rapidly disconnected and protected during tests, improving safety without significantly increasing test setup time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy electrical disconnection and safekeeping of the supply module during tests, preventing damage and extending the module's lifespan by allowing safe extraction and maintenance.
Implementation Method 1
The supply module comprises at least one transformer, and second input and output terminals able to be connected to the first terminals according to a direction of connection. The supply module is able to generate a supply voltage on the basis of an input voltage received between the second input terminals
Data Source
AI summary
A trip for electrical switching device including a protective housing, first electrical connection terminals, and a supply module including at least one transformer and second input and output terminals able to be connected to the first connection terminals according to a direction of connection. The supply module is able to generate a supply voltage on the basis of an input voltage received between the second input terminals and to deliver the supply voltage between the second output terminals. The supply module is movable with respect to the protective housing.