... .CE,ISO certified 4.Low start-up wind speed 1KW vertical wind turbine:VH model has small size, and simple design ... on-grid interface or directly on grid invertor. Main Specifications: Vertical Wind Turbine -- VH Model 1KW Item/Model1KWRated Speed (m/s ... /60HzMain advantages of this product1) small size 2) silent as vertical wind turbine3) simple installation4) The invertor is power efficiency,and ...