Direct current circuit breaker with adjustable current injection


A new DC interrupting principle adjusts the injected counter current to use the vacuum bottle’s interruption capability under optimum conditions. This allows interrupting a large range of currents, up to 20 kA. The performance has been verified by direct testing in our high-power laboratory. A particular focus is made on the vacuum bottle’s actuator that is key in ensuring the necessary fast interruption of DC.

Wolfgang GRIESHABER, Dan-Lucius Penache, Yang Yang, Florent Robert

Presented at CIRED 2023