Back to results
US 11,069,502 B2Granted
DC circuit breaker
AssigneeMitsubishi Electric Corporation
InventorsSho Tokoyoda, Takashi Inagaki, Kenji Kamei
Life of this patent
Estimating the term…
Abstract
A DC circuit breaker includes a fuse unit to interrupt a large current with a fuse, and the fuse unit includes a high-speed disconnector that is connected in parallel to the fuse and is opened when a fault current is detected.
Claims7
A DC circuit breaker comprising a fuse breaker unit to interrupt a large current with a fuse, wherein
- the fuse breaker unit includes:
- a plurality of fuses connected in parallel to each other,
- a plurality of switches connected in series to the fuses, respectively, and
- a controller to control the plurality of switches,
- a high-speed disconnector that is connected in parallel to the plurality of fuses and their respective switches and is opened when a fault current is detected, and
- a self-excited-oscillation type DC circuit breaker unit that is connected in series to the fuse breaker unit and interrupts a small current with a self-excited oscillation method.
3 more elements
A DC circuit breaker comprising a fuse breaker unit to interrupt a large current with a fuse, wherein
- the fuse breaker unit includes a high-speed disconnector that is connected in parallel to
- the fuse and is opened when a fault current is detected, and
- the fuse breaker unit includes a first metal oxide arrester that is connected in parallel to the fuse and the high-speed disconnector and suppresses an overvoltage after interruption of a direct current, and
- a self-excited-oscillation type DC circuit breaker unit that is connected in series to the fuse breaker unit and interrupts a small current with a self-excited oscillation method.
1 more element
Dependencies are inferred from the claim text.