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US 4,638,285 AGranted
Surge suppressing resistor for a disconnect switch
AssigneeSiemens Energy & Automation, Inc.
InventorDonald L. Lott
Life of this patent
Estimating the term…
Abstract
A surge suppressing resistor for a disconnect switch is provided which has its interior and exterior surfaces in fluid communication with the atmosphere to achieve a greater cooling effect. A glass epoxy stacking rod is supported between the end flanges of the resistor assembly and is used when two or more resistor bodies are to be joined together to form a unitary resistor assembly. The stacking rod is stressed and compressive forces hold the resistor bodies together as a unit for structural rigidity and electrical contact.
Claims2
A surge resistor, comprising:
- at least first and second hollow, thermally conductive, electrically resistive bodies, each having an exterior surface and an interior surface for transferring heat from said body, said bodies being aligned along a common longitudinal axis;
- a center flange positioned between the first and second resistor bodies;
- a first end flange associated with the end of the first resistor body opposite the center flange;
- a second end flange associated with the end of the second resistor body opposite the center flange;
- and
- an electrically insulative stacking rod positioned along the longitudinal axis inside the first and second resistor bodies and extending between the first and second end flanges and releasably connected thereto forming a unitary structure wherein the end flanges, center flange and resistor bodies are electrically connected.
3 more elements
Dependencies are inferred from the claim text.