The contamination depositing characteristics of suspension insulators under the sandstorm circumstance were investigated by the experiments of insulators running in circumstance of sandstorm simulated in laboratory artificially. Following artificial experiments

the contamination depositing and distributing characteristics were discussed

such as difference of deposition among sheds at different position

difference of deposition between big shed and small shed

relationship between deposition quantity and flow speed

relationship between deposition quantity and experiments duration. The obtained results show that shed position has no evident effect on pollution depositing as only flowing effect gets considered; flow speed and duration affect the dust and salt quantity depositing on shed surface greatly; at certain flow speed and duration

the deposition quantity may get the largest.