Vacuum interrupter
AssigneeMitsubishi Electric Corporation
InventorsNaoya Aihara, Taiki Donen, Yasutomo Otake, Katsuya Jinno, Hiromi Koga, Shinichi Miki
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Abstract
A vacuum interrupter according to the present disclosure is configured such that a linear resistive layer and a nonlinear resistive layer are disposed so as to cover at least a part of a periphery of an insulation container, and a magnitude relationship of each resistivity is R1>R3>R2, where a resistivity of the nonlinear resistive layer less than an operating electric field is R1, a resistivity less than or equal to an impedance when a lightning impulse is applied is R2, and a resistivity of the linear resistive layer is R3.
Claims20
A vacuum interrupter comprising:
- a cylindrical insulation container;
- a movable-side end plate to close one end portion of the insulation container;
- a fixed-side end plate to close another end portion of the insulation container;
- a movable-side electrode provided at a distal end portion of a movable-side electrode rod disposed to penetrate the movable-side end plate;
- a fixed-side electrode provided at a distal end portion of a fixed-side electrode rod disposed to penetrate the fixed-side end plate so as to face the movable-side electrode;
- and
- an arc shield disposed so as to surround the movable-side electrode and the fixed-side electrode,
- wherein a linear resistive layer and a nonlinear resistive layer are disposed so as to cover at least a part of a periphery of the insulation container, and
- a magnitude relationship of each resistivity is R1>R3>R2, where R1 is a resistivity of the nonlinear resistive layer when an applied electric field is less than an operating electric field R2 is a resistivity of the nonlinear resistive layer when a lightning impulse is applied R2 is less than an impedance of a vacuum valve when the lightning impulse is applied, and R3 is a resistivity of the linear resistive layer.
A vacuum interrupter comprising:
- a movable-side electrode disposed in an insulation container;
- a fixed-side electrode disposed in the insulation container so as to face the movable-side electrode;
- and
- an arc shield disposed around the movable-side electrode and the fixed-side electrode,
- wherein a linear resistive layer and a nonlinear resistive layer are disposed so as to cover at least a part of a periphery of the insulation container, and
- a resistivity of the nonlinear resistive layer, when an applied electric field is less than an operating electric field, is higher than a resistivity of the linear resistive layer.
Dependencies are inferred from the claim text.