Circuit Breaker Control Device Digital Communication Testing

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Solution Overview

Problem

Conventional circuit breaker testing methods using wired connections are prone to errors, limited in test capabilities, and pose safety risks due to the generation of electric sparks, while also requiring multiple cables and connectors, which can cause psychological stress for maintenance personnel and do not allow for remote testing.

Innovation Solution

A circuit breaker control device and system that utilizes data communication to receive and analyze test signal data wirelessly or through a wired connection, determining the blocking operation based on relay element analysis, thereby preventing erroneous trips and enabling remote testing and various performance tests.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wired connection with multiple pins is used for testing, then test capability is improved, but risk of electric spark and erroneous trip increases

Engineering Contradiction:

Improvetest capabilityVSAvoidelectric spark

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful analog signal transmission function from the connector and replaces it with digital communication. The test device communicates with the circuit breaker controller through a wired connector using only communication pins (e.g., 2 pins for RX/TX) rather than multiple analog signal pins, eliminating the source of electric sparks while maintaining test capability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical analog signal transmission system with a digital communication system. Instead of applying analog voltage signals through multiple pins that cause sparks, the system uses digital communication protocols to transmit test parameters and receive status information, eliminating the harmful electrical contact.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If wired connection with multiple cables is used for testing, then test capability is improved, but device complexity increases

Engineering Contradiction:

Improvetest capabilityVSAvoidcable and connector complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent makes the connector universal by designing it to handle both communication functions (power transmission control, status monitoring) and test functions (relay element testing, blocking operation verification) through a single wired connection. This multi-functional connector eliminates the need for separate cables for different test types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple test functions (current relay test, voltage relay test, blocking operation test) and control functions into a single communication interface. The test device can perform various tests by transmitting different digital commands through the same connector, eliminating the need for multiple specialized cables and connectors.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If wired connection is used for testing, then test capability is improved, but ease of operation deteriorates due to safety risks

Engineering Contradiction:

Improvetest capabilityVSAvoidmaintenance personnel safety

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent introduces digital communication as an intermediary between the test device and the circuit breaker. Instead of directly connecting test signals that could cause sparks, the communication system mediates all interactions, allowing safe remote testing while maintaining full test capability through standardized communication protocols.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Adaptability or versatility

If analog signal transmission is used, then test capability is improved, but reliability deteriorates due to erroneous trips

Engineering Contradiction:

Improvetest capabilityVSAvoidtesting reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces the unreliable analog signal transmission system with a digital communication system. Digital signals are immune to the electrical interference and spark generation that plague analog connections, providing reliable communication for test parameter transmission and status monitoring without causing erroneous trips.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20250277854A1Circuit breaker

Publication Date: 2025.09.04 LS ELECTRIC CO LTD

AI summary

Embodiments of the present specification relate to a circuit breaker control device, a circuit breaker, and a circuit breaker test system, in which: communication is performed with a test device in a data communication manner so as to receive, from the test device, data on information of a test signal for testing a blocking operation of the circuit breaker; a relay element of the test signal is analyzed on the basis of the data; and whether to perform the blocking operation is determined according to an analysis result, and the blocking operation is thus performed according to a determination result.