Low-frequency de-icing of cableways
First Claim
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1. A system for de-icing a cableway, comprising a cableway configured for movement, and a power source electrically connected to the cableway for heating the cableway, wherein the power source provides power to the cableway in a range of about from 5 to 100 watts per meter of the cableway.
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Abstract
Low-frequency AC power in a range of about from 50 to 200 Hz flows through a cableway, providing 5 to 100 watts per meter of cableway. Through separate connections to a power bus, a cableway is electrically divided into branches of a parallel circuit that use low voltage to heat. A transformer connected to each branch transforms high-voltage low amperage current to low-voltage high amperage current.
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Citations
53 Claims
- 1. A system for de-icing a cableway, comprising a cableway configured for movement, and a power source electrically connected to the cableway for heating the cableway, wherein the power source provides power to the cableway in a range of about from 5 to 100 watts per meter of the cableway.
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19. A system for de-icing an elongated conductor, comprising:
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an elongated conductor; and
a power source electrically connected to the elongated conductor;
wherein the elongated conductor comprises a conductor span, said conductor span being separately connected to a power source, and wherein the system melts ice using power having a voltage in a range of about from 10to20volts. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for de-icing a cableway configured for movement, comprising a step of:
- applying electric power to the cableway for heating the cableway, wherein applying electrical power comprises having a power source that provides power in a range of about from 5 to 100 watts per meter of the cableway.
- View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A method for de-icing an elongated conductor, comprising the steps of:
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separately connecting a conductor span with a power source; and
applying electric power having a voltage in a range of about from 10 to 20 volts to the conductor span. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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Specification