Eaton's innovation brings reliability and economy to medium voltage switchgearDiversified industrial manufacturer Eaton Corporation today launched its new FMX range of medium-voltage switchgear. Key innovations in the new range from Eaton's Electrical Sector include a new electromagnetic mechanism for circuit-breaker control which enhances life and reliability, an integrated cable test facility outside of the high voltage compartment for maximum convenience and safety and exceptionally compact construction.
The FMX range comprises metal-enclosed single-busbar switchgear that uses air and solid insulation and is available in IEC 12 kV and 24 kV versions with ratings up to 2,000 A. The products in the range are designed around Eaton's proven vacuum interrupters, which require no maintenance and are certified for 30,000 operation cycles. In this new range of switchgear, the interrupters are partnered by a novel and patented electromagnetic operating mechanism that provides an optimised force/stroke characteristic without the need for complicated and potentially unreliable mechanical linkages.
Long-life epoxy cast resin is used to provide primary insulation around live parts in the new switchboards and is shaped specifically to provide optimum insulation combined with excellent thermal characteristics. In addition, the insulation is configured to provide effective control over electric fields around components, thereby minimising the risk of internal arcing.
The use of vacuum interrupters and solid insulation means that FMX switchgear is much more environmentally friendly than MV switchgear that uses SF6 gas as an insulant. Cost of ownership is also significantly reduced, as no regular testing of gas pressure or other routine maintenance is needed and there is no high end-of-life cost associated with ultimately disposing of the equipment.
The compact version of the new FMX switchgear have a panel width of from just 500 mm and all have provision for cable connections to be made from the front, so that rear access is not required. This makes FMX switchgear economical in its use of valuable floor space, and easy to accommodate in even the most restricted of environments.
FMX switchgear is the latest addition to the comprehensive family of MV switchgear products offered by Eaton's Electrical Sector, an organisation with long and extensive experience in this field. Other products in Eaton's MV family, some of which were formerly sold under the Holec product series, include Xiria 24 kV ring main units, SVS/08 and SVS/12 modular switchgear solutions, MMS compact double-busbar switchgear, W-VACi vacuum circuit breakers and the soon to be launched Unitole UX withdrawable switchgear.
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