NTN Micro Hydro Turbine

The NTN Micro Hydro Turbine is a hydraulic, permanent magnet, synchronous generator with a propeller turbine of 5 wings, with the option of wing diameters of 600 mm, 900 mm or 1,300 mm. They are designed to be placed in flowing bodies of water to rotate the turbine using low torque bearings where the flow rate does not exceed 3 m/s. Each unit weighs 170 kg and can be installed over existing waterways with a minimum width and depth of 1 m. The power output depends on the size of the turbine wings. The largest turbine with 1,300 mm diameter wings produces 2.0 kW of power in a channel of water with a flow rate of 2 m/s. The energy is stored in batteries included with each unit.

Technical support can be provided domestically within Japan. The unit will be repaired free of charge by the manufacturer in accordance with the warranty agreement during the warranty period (1 year). However, technical support is not currently offered internationally.

This product includes a 1 year warranty, and has an expected lifetime of 20 years. ^{Interview with representative}

Testing performed by the manufacturer measured a power output of 500 W for a turbine with a wing diameter of 900 mm in a channel with a flow rate of 1.6 m/s. However, no third-party testing has been completed.

Potential hazards for this product arise from debris in the water channel. NTN offer a debris screen that can be installed to protect the turbine.