摘要:
There are provided a coating material for electrical equipment, a method for manufacturing a coating material for electrical equipment, and a closed insulating device, capable of suppressing floating and moving around of foreign substances in electrical equipment. A coating material for electrical equipment 20 in an embodiment includes: a matrix resin 50 composed of an epoxy resin; a first filler 10 dispersedly contained in the matrix resin 50 and composed of whiskers having a semiconductive specific volume resistivity; a second filler 30 dispersedly contained in the matrix resin 50 and composed of particles having a semiconductive specific volume resistivity; and a third filler 40 dispersedly contained in the matrix resin 50 and composed of a planar, fibrous, or lamellar substance having insulating properties.
摘要:
A hermetically sealed insulating apparatus has: a high voltage conductor (1) which extends in the axis direction; a metal container (3) which covers the high voltage conductor (1), while keeping a space between the high voltage conductor (1) and the metal container (3), and has the space filled with an insulating gas (2); and a spacer (4), which is fixed such that the spacer is sandwiched between the end portion flange sections (3a) on the outer circumferential side, supports the high voltage conductor (1) on the inner circumferential side and is provided with an insulating member (4a). A nonlinear resistance film (13), wherein a nonlinear resistance material provided with a characteristic of having a lower resistance value as the current density increases is filled with a filling material having a dielectric constant different from that of the nonlinear resistance material, is arranged on the inner surface of the metal container (3).
摘要:
A nonlinear resistive coating material 20 in an embodiment includes: a matrix resin 22 made of an epoxy resin which is cured by adding a curing agent thereto; ZnO-containing particles 21 dispersedly contained in the matrix resin 22 and made of a sintered compact containing ZnO as a main component; and semiconductive surface-treated whiskers 10 dispersedly contained in the matrix resin 22 and made of ZnO subjected to titanate coupling surface modification treatment.