Insulators test equipment, test and methods

    Experimental study on glass insulator: climate test chamber diameter coffee is 7. 8m, clearance height H is "6m Phytotron by the refrigeration system, vacuum system, consisting of four main parts spray systems and wind speed withered Lord minimum system temperature chamber. up to (-45 ± 1) ℃, can meet the insulator artificial icing test requirements; lowest air pressure up to 30kPa, can simulate altitude 9000m and resistance to atmospheric conditions at high altitudes artificial climate indoor installation with two rows of press IEC standard recommends making the nozzle (7 per row) for indoor spraying in a climatic and environmental conditions for the formation of icing; hair means either a climatic chamber can simulate wind speed, and available-meter indoor temperature and fog particles uniformly distributed, Winds adjustment range IN 12m / s. The test voltage from the intermediate artificial climate chamber side installation of 330kV ceramic wall bushings introduced.

    Artificial climate chamber can simulate icing condition under different conditions. Artificial climate chamber spray systems with spray different droplet spray device simulation rime icing, the use of IO ~ 30ym head the median volume droplet diameter; analog mixed glaze icing, using analysis of 80 Fim head the value of body ; simulated icing glaze, the use of the median volume droplet diameter. A large number of experimental results show that the rime ice Iced Insulator Flashover Voltage Insulator very Icing ice lightning live low, the electrical insulation of the power system is the glaze icing, therefore, experimental study to simulate freezing rain covered mainly ball ʱ??

    At present, the power supply capacity requirements insulator (string) icing tests Most researchers believe that icing is a special form of contamination, and the filthy insulators. Therefore, icing insulator string flashover pollution tests recommended power standards to Experimental Research. Water droplets having a diameter of 40 ~ 80 ~ 120ym spray high, mix glaze and glaze can affect the standards of the most serious yet. Which large critical current is less than the power supply network to meet the IEC standard transmission line Composite Insulators technology Ha real down.