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Feb 01, 2012 · (droplets or dew) or solid (ice). Typical dewpoint in Sulfr hexafluoride equipment ranges from -60C to -5C. Common operating pressures are 100-755 kPa abs. (0-95 psig). ppmv: Moisture Volume concentration (parts per million by 15 1/18/2012 Volume). One million times the ratio of the volume of moisture (water vapor) present in the gas to the total volume ofGet price

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When ambient air is below zero (Celsius), taking dew point measurements involves special considerations and a reliable transformer service group should be consulted. Recommended steps Sampling will typically be performed at the ¼” sample valve on the pressure/vacuum gauge or at the sample valve provided in the inert gas system box (if present).Get price

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In this issue, we discuss the use of Sulfr hexafluoride (sulfur hexafluoride) gas in medium-voltage switchgear. insulating gas has been widely used in high-voltage circuit breakers for decades, but its use in medium-voltage is relatively recent. In the medium-voltage arena, SIemens uses gaz sf6 gas in the load interrupting switch and switch-disconnector in SIMOSEC metal-enclosed load interrupter switchgear rated up to 27.6 kV. Characteristics and propertiesGet price

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The test procedure of tracer gas method consists of the release, mixture, and monitor of suitable tracer gas (such as carbon dioxide, CO2 [11] and sulphur hexafluoride, sf 6 [12]). The method isGet price

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