Dynamic Resistance Measurement (DRM) is a specialized technique used in circuit breaker analysis to assess the condition of arcing contacts during breaker operation. Unlike traditional static resistance testing, which evaluates the resistance when the breaker is stationary, DRM continuously measures the contact resistance as the breaker operates, either while opening or closing. This dynamic testing provides insight into the wear and performance of the moving arcing contacts.

DRM captures and plots resistance values over time, allowing engineers to spot irregularities or spikes that indicate issues like contact wear, misalignment, or degradation. By detecting these problems early, DRM helps prevent circuit breaker failures, especially in high-voltage systems.

Key Aspects:

• Purpose: Identifies wear and deterioration of arcing contacts.
• Process: Monitors resistance dynamically during operation.
• Benefits: Provides early detection of contact issues, enhancing reliability and safety.

DRM is essential in maintaining the health of high-voltage circuit breakers, reducing the risk of malfunction, and prolonging equipment lifespan.

Oct 13,2024