Patents Assigned to Waukesha Electric Systems, Incorporated
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Patent number: 8531262Abstract: A three phase transformer circuit is provided that includes a supply side, wherein the supply side is selectably configurable, via the use of sets of terminal boards, between a delta connection and a wye connection at a time of use and, a load side, wherein the load side is selectably configurable between a delta connection and a wye connection at the time of use. The three-phase transformer also provides for selecting an input voltage, from multiple input voltages, via the sets of terminal boards, at the time of use, and for selecting an output voltage for the supply side, from multiple output voltage, at the time of use.Type: GrantFiled: February 10, 2005Date of Patent: September 10, 2013Assignee: Waukesha Electric Systems, IncorporatedInventors: Rajendra Ahuja, Joseph Nguyen, Mostafa Jafarnia
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Patent number: 8085120Abstract: An insulation system for a fluid-filled power transformer that allows for operation of the transformer at higher temperatures and with lowered susceptibility to aging. The insulation system includes a plurality of fibers that are bound together by a solid binding agent. The solid binding agent may, for example, for sheaths around the fibers or may be in the form of dispersed particles that bind the fibers to each other. Also, a method of fabricating such an insulation system.Type: GrantFiled: August 13, 2009Date of Patent: December 27, 2011Assignee: Waukesha Electric Systems, IncorporatedInventors: Thomas M. Golner, Shirish P. Mehta, Padma P. Varanasi, Jeffrey J. Nemec
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Patent number: 7842122Abstract: A gas remover apparatus suitable for electrical substation high-voltage transformer load tap changers and similar oil-filled equipment removes potentially hazardous and destructive gases from the air-filled volume above the insulating oil bath in which the load tap changer electrical contacts are immersed. The apparatus applies a continuous supply of nitrogen to the load tap changer, and has an orifice to maintain a slight overpressure over an extreme range of climatic conditions. The substantially continuous venting of nitrogen entrains and expels contaminants such as oxygen, water, and potentially explosive breakdown products from the oil, all of which can degrade the performance of the load tap changer.Type: GrantFiled: October 31, 2003Date of Patent: November 30, 2010Assignee: Waukesha Electric Systems IncorporatedInventors: Thomas M. Golner, Peter C. Michel
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Patent number: 7285150Abstract: A dehydrator breather is provided that includes a vessel, a desiccant container, a valve housing coupled to the vessel, and a vent assembly coupled to the valve housing. The vent assembly includes screened ports disposed along a vertical axis of the vent assembly body that allow air to enter and exit the dehydrator breather. The vent assembly, along with a filter placed between a desiccant container and the valve housing, individually and jointly, prevent desiccant that escapes the desiccant container from clogging the valve assembly.Type: GrantFiled: July 23, 2004Date of Patent: October 23, 2007Assignee: Waukesha Electric Systems IncorporatedInventors: Thomas M. Golner, Shirish P. Mehta
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Patent number: 7119646Abstract: An apparatus for controlling the temperature of a core of a transformer is provided that includes a core, a shield surrounding the core, a cast formed between the core and the shield, and tubing positioned on the shield. The cast directs heat from the core to the shield and cooling fluid is directed through the tubing to cool the shield.Type: GrantFiled: December 18, 2001Date of Patent: October 10, 2006Assignee: Waukesha Electric Systems, IncorporatedInventors: Thomas Golner, Edward Pleva, Shirish Mehta
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Patent number: 7033513Abstract: A filter apparatus suitable for electrical substation high-voltage transformer tap changers and similar oil-filled equipment removes moisture and other contaminants from the insulating oil bath in which the tap contacts are immersed. The apparatus can be configured and subsequently reconfigured for use with any of a variety of filter media using a common pump and control mechanism and an assortment of adapters.Type: GrantFiled: June 19, 2003Date of Patent: April 25, 2006Assignee: Waukesha Electric Systems, IncorporatedInventors: Douglas Riggins, Angelynn G. Price, John F. Puente
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Publication number: 20040256332Abstract: A filter apparatus suitable for electrical substation high-voltage transformer tap changers and similar oil-filled equipment removes moisture and other contaminants from the insulating oil bath in which the tap contacts are immersed. The apparatus can be configured and subsequently reconfigured for use with any of a variety of filter media using a common pump and control mechanism and an assortment of adapters.Type: ApplicationFiled: June 19, 2003Publication date: December 23, 2004Applicant: Waukesha Electric Systems, IncorporatedInventors: Douglas Riggins, Angelynn G. Price, John F. Puente
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Patent number: 6797037Abstract: A dehydrator breather is provided that includes a vessel, a desiccant container, a valve housing coupled to the vessel, and a vent assembly coupled to the valve housing. The vent assembly includes screened ports disposed along a vertical axis of the vent assembly body that allow air to enter and exit the dehydrator breather. The vent assembly, along with a filter placed between a desiccant container and the valve housing, individually and jointly, prevent desiccant that escapes the desiccant container from clogging the valve assembly.Type: GrantFiled: September 6, 2002Date of Patent: September 28, 2004Assignee: Waukesha Electric Systems, IncorporatedInventors: Thomas M. Golner, Shirish P. Mehta