An electric wire conductor is excellent in space saving and flexibility and is less likely to concentrate a load on specific elemental wires, and a covered electric wire and a wire harness contain the electric wire conductor. The electric wire conductor contains a wire strand containing a plurality of elemental wires twisted together. The wire strand has a sector-shaped part in which a cross-section intersecting an axial direction of the wire strand contains either a single edge or two edges touching each other at an apex, and an outward curve connecting the ends of the single edge or the two edges. In the sector-shaped part, the elemental wires having deformation ratios from a circle lower at an outer peripheral part facing an outer periphery of the sector-shaped part than at a center part of the sector-shaped part located inside the outer peripheral part in the cross-section intersecting the axial direction.

A bus bar assembly includes a nonconductive terminal cap configured to at least partially surround an electrically conductive terminal. The terminal cap has a perimeter wall configured to circumscribe at least a portion of the terminal to provide a gap configured to expose the terminal. The terminal cap includes a first attachment feature. The bus bar assembly also includes a bus bar having an end configured to mechanically and electrically engage the terminal in an assembled condition and a nonconductive shroud enclosing the bus bar. The shroud includes a second attachment feature configured to removably engage the first attachment feature in the assembled condition to secure the shroud to the terminal cap. A method of electrically connecting cells of a battery is also provided.

A bus bar assembly includes a nonconductive terminal cap configured to at least partially surround an electrically conductive terminal. The terminal cap has a perimeter wall configured to circumscribe at least a portion of the terminal to provide a gap configured to expose the terminal. The terminal cap includes a first attachment feature. The bus bar assembly also includes a bus bar having an end configured to mechanically and electrically engage the terminal in an assembled condition and a nonconductive shroud enclosing the bus bar. The shroud includes a second attachment feature configured to removably engage the first attachment feature in the assembled condition to secure the shroud to the terminal cap. A method of electrically connecting cells of a battery is also provided.

The present disclosure discloses a composite crossarm and a power transmission tower. The composite crossarm includes a post insulator and three suspension insulators. The post insulator and the suspension insulators each has an end configured to be connected to a tower body of the power transmission tower, and another end connected together to form an end of the composite crossarm that is configured to attach a transmission line. The three suspension insulators are arranged at intervals around the post insulator. Axes of two suspension insulators and an axis of the post insulator are in the same plane. The two suspension insulators whose axes are in the same plane as the axis of the post insulator are defined as first suspension insulators, the remaining suspension insulator is defined as a second suspension insulator. The two first suspension insulators form an angle ranged from 45° to 90°.

The present disclosure discloses a composite crossarm and a power transmission tower. The composite crossarm includes a post insulator and three suspension insulators. The post insulator and the suspension insulators each has an end configured to be connected to a tower body of the power transmission tower, and another end connected together to form an end of the composite crossarm that is configured to attach a transmission line. The three suspension insulators are arranged at intervals around the post insulator. Axes of two suspension insulators and an axis of the post insulator are in the same plane. The two suspension insulators whose axes are in the same plane as the axis of the post insulator are defined as first suspension insulators, the remaining suspension insulator is defined as a second suspension insulator. The two first suspension insulators form an angle ranged from 45° to 90°.

The present disclosure discloses an insulating cross arm and a preparation method thereof, and a transmission pole. The insulating cross arm includes: an integrally cast connecting fitting including an intermediate connecting part and two sleeves respectively disposed at opposite ends of the intermediate connecting part; a core rod including a first core rod and a second core rod, an end of the first core rod and an end of the second core rod being respectively fixed in the two sleeves; two wire attaching fittings respectively fixed to another end of the first core rod and another end of the second core rod; and an insulating layer coated on and fixed to an outer peripheral surface of the core rod. The insulating layer is located in other regions, and the insulating layer is connected with both the connecting fitting and the wire attaching fittings in a sealing way.

The present disclosure discloses an insulating cross arm and a preparation method thereof, and a transmission pole. The insulating cross arm includes: an integrally cast connecting fitting including an intermediate connecting part and two sleeves respectively disposed at opposite ends of the intermediate connecting part; a core rod including a first core rod and a second core rod, an end of the first core rod and an end of the second core rod being respectively fixed in the two sleeves; two wire attaching fittings respectively fixed to another end of the first core rod and another end of the second core rod; and an insulating layer coated on and fixed to an outer peripheral surface of the core rod. The insulating layer is located in other regions, and the insulating layer is connected with both the connecting fitting and the wire attaching fittings in a sealing way.

A bus bar assembly includes a nonconductive terminal cap that is configured to secure to an electrically conductive terminal via an attachment feature. The terminal cap has a slot that is configured to expose a terminal portion of the terminal when in an assembled condition. A bus bar has an end that is configured to be received in and extend through the slot when in the assembled condition in which the end is in electrical contact with the terminal portion of the terminal. A nonconductive shroud encloses the bus bar.

A bus bar assembly includes a nonconductive terminal cap that is configured to secure to an electrically conductive terminal via an attachment feature. The terminal cap has a slot that is configured to expose a terminal portion of the terminal when in an assembled condition. A bus bar has an end that is configured to be received in and extend through the slot when in the assembled condition in which the end is in electrical contact with the terminal portion of the terminal. A nonconductive shroud encloses the bus bar.

A surge arrestor includes an active part extending along a longitudinal direction of the surge arrester, a first electrode having a first interlocking part, a second electrode resting against a second end of the active part, a flexible insulating housing, and a second interlocking part formed on an inner surface of the flexible insulating housing. The flexible insulating housing includes: a support member mechanically connecting and supporting the assembly of the first electrode, the active part and the second electrode, which has a plurality of supporting elements being arranged parallel to the longitudinal direction of the surge arrester and being arranged laterally at sides of the assembly of the first electrode, the active part and the second electrode, and an insulating expandable part with a plurality of sheds extending outwards, being moulded around the support member and being spaced apart from the assembly.