Adaptor for a capacitor

A system comprising:

• a capacitor device configured to be received at a capacitor device structure;
• and
• an adaptor configured to be hermetically sealed to the capacitor device structure, the adaptor comprising an adaptor body of an insulating material, the adaptor body comprising a sidewall that extends from the capacitor device structure and defines an interior space, the sidewall comprising an exterior surface and an interior surface and the adaptor body further comprising an electrically conductive adaptor interface in the interior space and adhered to the interior surface, wherein
• the electrically conductive adaptor interface is configured to connect to a fuse that is external to and separate from the capacitor device structure to mount the fuse to the adaptor and,
• when the fuse is connected to the electrically conductive adaptor interface, the fuse and the adaptor form an insulating bushing for the capacitor device.

A capacitor comprising:

• a structure;
• a plurality of capacitive devices at the structure;
• a plurality of electrically insulating bushings extending outward from the structure, each of the plurality of electrically insulating bushings hermetically sealed to the structure, the plurality of electrically insulating bushings comprising at least a first electrically insulating bushing and a second electrically insulating bushing, wherein
• the first electrically insulating bushing comprises:
• a single-piece body formed of an electrically insulating material, the single-piece body extending from a first end of the single-piece body to a second end of the single-piece body, the first end of the single-piece body passing through a first opening in the structure and an exterior surface of the single-piece body being hermetically sealed to the structure such that the first opening is hermetically sealed;
• and
• the second electrically insulating bushing comprises:
• an electrically insulating adaptor body extending from a first end to a second end, the adaptor body comprising an electrically insulating material and an electrically conductive connection interface, the first end of the adaptor body passing through a second opening in the structure and an exterior surface of the adaptor body being hermetically sealed to the structure such that the second opening is hermetically sealed, and
• a fuse comprising a fuse housing and a fusible element in the fuse housing, wherein the electrically conductive connection interface is configured to hold the fuse to the adaptor body and to electrically connect the fusible element to at least one the plurality of capacitive devices.