User Manual

6
Installation
Marine Mountings
When mounting on a yacht or boat, positioning the turbine will be influenced by
the configuration of the boat and other equipment fitted. It is important to ensure
that the blades are at sufficient height such that injury to the crew from rotating
blades is unlikely. A minimum height of the lowest point of the airblades above a
crewed area should be 2.4 metres.
Also ensure that no part of the turbine can come into contact with any other part of
the boat’s fittings or rigging. Because the turbine is subject to dynamic loads when
the yacht is in a seaway in addition to wind loads, the tower should be securely
braced or guyed both fore and aft and athwartships. The bracing struts or wires
should be firmly attached to the main tower at a point 200 –300 mm below the
lowest point of the blades.
The D400 is an inherently quiet and low vibration machine. However, certain
applications may benefit from the introduction of anti-vibration mounts under the
main tower and bracing struts. Note that, on a yacht or boat, no unsupported tower
should exceed 2.5 metres in length. The wind loading on the D400’s rotor disc can
exceed 50 kg, so any tower structure should be designed to allow for a safe working
lateral load of 70 kg at the hub height of the turbine.
For inland watercraft such as narrow boats, a hinge-down tower arrangement can
be utilised to allow for rapid lowering of the turbine for passage under low bridges
etc.
For ketches and yawls, a mizzen mount is often suitable.
The D400 is also suitable for mounting on a stub tower from stern arches and
targas.
Contact your Dealer or Eclectic Energy Limited for further information.