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In 1988, Pentair agreed to acquire FC Holdings Inc., the holding company for Federal Cartridge and Hoffman Engineering, for $175 million in cash and the assumption of debt. Pentair would not hold Federal Cartridge for a long time, but the purchase of Hoffman Engineering was the start of a prosperous era of enclosures manufacturing for Pentair.
Corona can progressively damage the insulation inside these devices, leading to equipment failure. Elastomer items such as O-rings can suffer ozone cracking . Plastic film capacitors operating at mains voltage can suffer progressive loss of capacitance as corona discharges cause local vaporization of the metallization.
Such insulators can be used either in a horizontal position or in a vertical position. They can be directly fixed to the pole with a bolt or to the cross arm. Bushing - enables one or several conductors to pass through a partition such as a wall or a tank, and insulates the conductors from it. [12] Line post insulator; Station post insulator ...
Basic insulation is any material added to protect a user from accidental contact with energized parts. Supplemental insulation is rated to withstand 1500 volts AC. Double insulation is a design concept where failure of one insulation system will not expose the user to a shock hazard due to the presence of a second independent layer of insulation.
In electrical engineering, a corona ring, more correctly referred to as an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal or other irregular hardware piece of high voltage equipment.
Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled wet transformers, [ 1 ] some types of high-voltage capacitors , fluorescent lamp ballasts , and some types of high-voltage switches and circuit breakers.
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