IEC and IEEE Standards for High-Voltage Switchgear and ...tc17.iec.ch/pdf_files/Keynote address_Dufournet_SWICON 2008.pdf· PDF fileStandardization of the Ultra-High Voltage level (> 800 kV a.c.) The first step is the definition of rated voltage(s) and insulation levels by TC28 and TC8. Concerning high-voltage switchgear, IEC SC17A asked CIGRE SC A3 to set up a new working group to study technical requirements for UHV equipment.
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SF6-alternative gases for application in gas-insulated ...· The environmental problems caused by greenhouse gases have received unprecedented attention. Sulfur hexafluoride (SF 6), which is the preferred gas for use in gas-insulated switchgear (circuit breakers, disconnect switches, etc. for high-voltage electrical circuits), has a very high global warming potential, and there is a large international effort to find alternative gases.
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Integrated safety detector Comem RIS safety detector Comem RIS Comem RIS2 is an integrated and compact device for hermetically sealed oil-insulated transformers. It integrates the functions performed by different transformer accessories into a single, compact and reliable device that keeps constant control of the transformer's pressure, temperature, oil level and gassing.
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