A semiconductive polymer composition comprising: (a) an ethylene alkyl (meth) acrylate copolymer; (b) 15 to 48 wt % carbon black having an iodine adsorption number of 85 to 140 mg/g (ASTM D 1510-19a), an oil absorption number of 90 to 110 ml/100 g (ASTM D 2414-19) and an average primary particle size of 29 nm or less (ASTM D 3849-14a); and (c) 0.05 to 2.0 wt % of 4,4-bis(1,1-dimethylbenzyl)diphenylamine; all weight percentages being based on the total weight of the semiconductive polymer composition.

A semiconductive polymer composition comprising: (a) an ethylene C1-2-alkyl (meth)acrylate copolymer having an MFR2 of 4.5 g/10 min or more and a C1-2-alkyl (meth)acrylate content of at least 9.0 wt % based on the total weight of the ethylene C1-2-alkyl alkyl (meth)acrylate copolymer; (b) 35.0 to 48 wt % carbon black having an iodine adsorption number of 85 to 140 mg/g (ASTM D 1510-19a), an oil absorption number of 90 to 110 ml/100 g (ASTM D 2414-19) and an average primary particle size of 29 nm or less (ASTM D 3849-14a); and (c) 0.05 to 2.0 wt % of at least one antioxidant; all weight percentages being based on the total weight of the semiconductive polymer composition, unless mentioned otherwise.

A semiconductive polymer composition comprising: (a) an ethylene C1-2-alkyl (meth)acrylate copolymer having an MFR2 of 4.5 g/10 min or more and a C1-2-alkyl (meth)acrylate content of at least 9.0 wt % based on the total weight of the ethylene C1-2-alkyl alkyl (meth)acrylate copolymer; (b) 35.0 to 48 wt % carbon black having an iodine adsorption number of 85 to 140 mg/g (ASTM D 1510-19a), an oil absorption number of 90 to 110 ml/100 g (ASTM D 2414-19) and an average primary particle size of 29 nm or less (ASTM D 3849-14a); and (c) 0.05 to 2.0 wt % of at least one antioxidant; all weight percentages being based on the total weight of the semiconductive polymer composition, unless mentioned otherwise.

An insulation system and method are disclosed for insulating formed coils of electrical machines, such as motors and generators. The system includes strand/turn insulation that may include one or more layers of different materials, depending upon the dielectric requirements. A ground wall insulation is applied over the group of turns. The coil may be sized in a slot cell section. Additional insulation layers are provided, including a slot corona suppression insulation that extends just beyond stator slots, a voltage grading layer, and an armor layer. The resulting system is highly adaptable to different machine designs and ratings, and affords superior resistance to degradation.

An insulation system and method are disclosed for insulating formed coils of electrical machines, such as motors and generators. The system includes strand/turn insulation that may include one or more layers of different materials, depending upon the dielectric requirements. A ground wall insulation is applied over the group of turns. The coil may be sized in a slot cell section. Additional insulation layers are provided, including a slot corona suppression insulation that extends just beyond stator slots, a voltage grading layer, and an armor layer. The resulting system is highly adaptable to different machine designs and ratings, and affords superior resistance to degradation.

A grommet configured to provide support for a cable exiting of a housing is presented herein. The grommet has a generally elongate shape extending along a longitudinal axis. The grommet includes a sealing part configured to interact with an inner wall of an exit point of the housing, a sleeve arranged around the longitudinal axis and configured to be arranged outside of the housing to act as a cable relief on the outside of the housing, the sealing part, and one or more reinforcement members provided in a transition region between the sealing part and the sleeve. An electronic member including an electric cable connected to an electronic component present within the housing of the electronic member and the grommet as well as a method of the forming grommet is also presented.

A grommet configured to provide support for a cable exiting of a housing is presented herein. The grommet has a generally elongate shape extending along a longitudinal axis. The grommet includes a sealing part configured to interact with an inner wall of an exit point of the housing, a sleeve arranged around the longitudinal axis and configured to be arranged outside of the housing to act as a cable relief on the outside of the housing, the sealing part, and one or more reinforcement members provided in a transition region between the sealing part and the sleeve. An electronic member including an electric cable connected to an electronic component present within the housing of the electronic member and the grommet as well as a method of the forming grommet is also presented.

The device and process disclosed relates to hot sticks suitable for working on high voltage conductors in high temperatures. The enhanced hot sticks include a thermal insulating piece between the pole and the end tool. The disclosed hot stick retains electrical and mechanical properties at least as good as those of regular hot sticks and can be used on high temperature lines in the same way as regular hot sticks are presently used to perform live work on normal lines.

The device and process disclosed relates to hot sticks suitable for working on high voltage conductors in high temperatures. The enhanced hot sticks include a thermal insulating piece between the pole and the end tool. The disclosed hot stick retains electrical and mechanical properties at least as good as those of regular hot sticks and can be used on high temperature lines in the same way as regular hot sticks are presently used to perform live work on normal lines.

A high-voltage apparatus contains an internal conductor, an insulating body which surrounds the internal conductor along its longitudinal direction and has insulating layers which are composed of a synthetic material which is impregnated with a resin, and also electrically conductive control inserts for field control which are arranged concentrically around the internal conductor and are spaced apart from one another by the insulating layers. At least one of the control inserts is a contact insert which is electrically connected to the internal conductor by a contact-making device. The contact-making device has a contact element which is composed of electrically conductive material and is electrically connected to the contact insert. The contact element is fixed by adhesive bonding to a conductive substrate which is in electrical contact with the internal conductor.