Selectivity of Residual Current Devices (RCDs): Difference between revisions
From Electrical Installation Guide
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|image=Hp-highlight-selectivity-guide.png | |image=Hp-highlight-selectivity-guide.png | ||
|title=Selectivity, Cascading and Coordination Guide | |title=Selectivity, Cascading and Coordination Guide | ||
|text=Get all required information to verify your electrical distribution design's robustness, considering overloads and short circuits. | |text=Get all required information to verify your electrical distribution design's robustness, considering overloads and short circuits. | ||
Latest revision as of 08:38, 27 April 2022
When circuit breakers are equipped with RCD function, selectivity principles described in previous paragraphs are valid for short-circuit and earth fault with high amplitude current.
Residual Current Devices are by design very sensitive to fault and shall be coordinated properly to achieve total selectivity in case of earth fault, in addition to overcurrent protection selectivity.
For more details on RCDs selectivity, see chapter F - Coordination of residual current protective devices
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