In this study, the aerodynamic coefficients of single and four-bundled conductor models, where pennant shape of ice and snow accretion was simulated, were obtained by wind tunnel tests in variation with the attack angle, wind speed and turbulence intensity in order to investigate their effects on the aerodynamic force. Surface pressure on conductor models was also measured. The experimental results show that the aerodynamic coefficients of the ice and snow accreted conductor models vary depending on the wind speed and turbulence intensity included in the incident flow, and the variation in the aerodynamic coefficients is caused by turbulence transition of separated shear layers from the model surface.