A power cable having a central ground conductor. Phase interweave power conductors are positioned about the central ground conductor. Individual phase interweave power conductors have the same diameter. The individual phase interweave power conductors have a cross sectional area which is optimized. Each of the individual phase interweave power conductors is configured to support 100% cross sectional usage to maximize power carrying capability. The power cable reduces the skin effect of the power cable and the proximity effect of the power cable.

An object of the instant application is to provide a capacitive power transmission cable comprising at least two sets of conductive strands, the sets of strands being insulated from each other and in capacitive relationship, the one with the other; wherein the conductive strands are laid at least substantially in a multiples of six layer structure, with substantially equal numbers of strands of both sets; and wherein each layer has strands of one set alternating with strands of the other set and the strands of the respective sets have different contrasting color.

A power cable having a central ground conductor. Phase interweave power conductors are positioned about the central ground conductor. Individual phase interweave power conductors have the same diameter. The individual phase interweave power conductors have a cross sectional area which is optimized. Each of the individual phase interweave power conductors is configured to support 100% cross sectional usage to maximize power carrying capability. The power cable reduces the skin effect of the power cable and the proximity effect of the power cable.

Induction heating extension cables including control conductors are disclosed. An example cable assembly includes: a first plurality of conductors in a Litz cable arrangement; an outer protective layer configured to protect the plurality of conductors from physical damage; and a second plurality of conductors that are electrically isolated from the first plurality of conductors and are protected by the outer protective layer from physical damage.

A power cable having a central ground conductor. Phase interweave power conductors are positioned about the central ground conductor. Individual phase interweave power conductors have the same diameter. The individual phase interweave power conductors have a cross sectional area which is optimized. Each of the individual phase interweave power conductors is configured to support 100% cross sectional usage to maximize power carrying capability. The power cable reduces the skin effect of the power cable and the proximity effect of the power cable.

Induction heating extension cables including control conductors are disclosed. An example cable assembly includes: a first plurality of conductors in a Litz cable arrangement; an outer protective layer configured to protect the plurality of conductors from physical damage; and a second plurality of conductors that are electrically isolated from the first plurality of conductors and are protected by the outer protective layer from physical damage.

Provided is an airtight terminal that is designed for an automotive electric compressor and that eliminates the need for use of a gasket. The airtight terminal includes a metallic outer ring having through holes formed for screw fastening and sealing holes arranged linearly, leads inserted through the sealing holes in the metallic outer ring, and pieces of an insulating material to seal gaps between the metallic outer ring and the respective leads. The metallic outer ring has a seal coat possessing elastic deformability. The seal coat is put on a predetermined surface of the metallic outer ring that is at least a contact surface to which an external device is attached. The seal coat is put in a shape of an oval embankment, and the sealing holes are disposed inside a region surrounded with the embankment-shaped coat. When the airtight terminal is attached to the external device such as an airtight container for an electric compressor, the airtight terminal is fastened with screws, with the embankment-shaped seal coat being pressed against an outer wall surface of the external device and being elastically deformed. At the same time, a terminal attachment hole formed in the outer wall surface of the external device is disposed inside the oval embankment of the seal coat. This can hermetically isolate an inside and an outside of the oval embankment from each other.

A capacitive power transmission cable (1) having at least two sets of conductive strands (2) and the strands of the sets are distributed in a transverse cross-section of the cable, whereby the two sets are in capacitive relation to each other, wherein preferably, the capacitance is at least 10 nF/m.

A capacitive power transmission cable (1) comprising at least two sets of conductive strands (2). The strands of the sets are distributed in a transverse cross-section of the cable, whereby the two sets are in capacitive relation to each other.

Provided is an airtight terminal that is designed for an automotive electric compressor and that eliminates the need for use of a gasket. The airtight terminal includes a metallic outer ring having through holes formed for screw fastening and sealing holes arranged linearly, leads inserted through the sealing holes in the metallic outer ring, and pieces of an insulating material to seal gaps between the metallic outer ring and the respective leads. The metallic outer ring has a seal coat possessing elastic deformability. The seal coat is put on a predetermined surface of the metallic outer ring that is at least a contact surface to which an external device is attached. The seal coat is put in a shape of an oval embankment, and the sealing holes are disposed inside a region surrounded with the embankment-shaped coat. When the airtight terminal is attached to the external device such as an airtight container for an electric compressor, the airtight terminal is fastened with screws, with the embankment-shaped seal coat being pressed against an outer wall surface of the external device and being elastically deformed. At the same time, a terminal attachment hole formed in the outer wall surface of the external device is disposed inside the oval embankment of the seal coat. This can hermetically isolate an inside and an outside of the oval embankment from each other.