Breaking device
AssigneeMitsubishi Electric Corporation
InventorsTakashi Inagaki, Sho Tokoyoda, Hiroki Ito
Life of this patent
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Abstract
A breaking device includes an interrupting section including interrupting units in which main interrupters, impedance circuits, and unit arresters are connected in parallel to each other, the main interrupters being connected in series, a resonant circuit section including a reactor, a capacitor, and a closing switch and connected in parallel to the interrupting section, and an all-point arrester connected in parallel to the interrupting section via the reactor. The clamping voltages of the unit arresters are equal among the interrupting units, and are in the range of 1.1 to 1.6 times the value obtained by dividing the clamping voltage of the all-point arrester by the number of the interrupting units connected in series in the interrupting section.
Claims5
A breaking device comprising:
- an interrupting section including a plurality of interrupting units, in each of which a main interrupter, a voltage divider circuit, and a first arrester are connected in parallel to each other, a plurality of the main interrupters being connected in series;
- a resonant circuit section including a reactor, a capacitor, and a closing switch, the resonant circuit section being connected in parallel to the interrupting section;
- and
- a second arrester connected in parallel to the interrupting section via the reactor, wherein
- clamping voltages of the first arresters are equal between the plurality of interrupting units, and are in a range of 1.1 to 1.6 times a value obtained by dividing a clamping voltage of the second arrester by the number of the interrupting units connected in series in the interrupting section.
Dependencies are inferred from the claim text.