Please refer to the Hyland 920 controller operation guidelines for information on ‘starting’ and
‘stopping’ turbine operation, and operation during high wind conditions.
Operation Guidelines
The turbine can be slowed by switching the brake on, this will stop it in light wind conditions or
significantly reduce power in medium winds
The turbine can be brought to a very slow rotation by switching the short button. This shorts the
windings in the generator and applies the maximum braking torque and has been tested to over 100
km/h.
Start and stop
The Hyland 920 turbine has been mechanically designed to withstand severe winds. The controller
can withstand a 22A throughput, however the plugs and cabling are rated to 20A and we
recommend a 20A breaker. If possible, the turbine should be put in the short position if it is known
that severe wind events are expected. For remote area operation we can supply an automated
system that will protect the controller. For details contact us.
NB: By March 2021 the high wind protection will be integral to the controller, it will cause the turbine
to shut down at ~75km/h.
High wind conditions
There are no maintainable components on the Hyland 920 wind turbine. Diffuse Energy
recommends a visual inspection after severe weather events to ensure there is no damage caused
by objects impacting the turbine. In the event that the turbine is underperforming or ‘noisy’ – a more
thorough inspection should also be completed.
Other than damage by storms, the other components that can fail are the rotor and yaw bearings,
they are designed for a 100,000 hour life (maximum for sealed bearings). If your turbine suffers a
failed bearing, contact Valen for assistance.
In the event of underperforming or damaged components - please refer to the ‘Trouble Shooting’
section or contact us at [email protected]
Inspection and maintenance
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