Document No. 1112M001 Revision 1.8 Date: June 2013
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5.6 Electrical Installation (e400nb 110Vdc, limiter and MPPT)
This method makes it possible to charge 12, 24, 36, 48 and 60Vdc
batteries. When the distance between the turbine and battery is
excessive, an option is to use a 110Vdc supply as shown in Fig 3. This
system uses the Kestrel e400nb 110Vdc and a Kestrel 3.5kW Voltage
Limiter (175V). The turbine power cables are considerably thinner and
there is an improvement in efficiency.
Kestrel recommends the Midnite Solar Classic 200 charge controller.
All charging installations use the same e400nb 110Vdc turbine.
Whenever there is an increase in turbine voltage, the limiter restricts
the voltage to 135Vdc. The turbine therefore never exceeds the input
voltage limit of the MPPT controller. The same charge controller type is
used on both wind and solar in hybrid installations.
The Kestrel e400nb 110Vdc power range from 0 – 3.5kW is developed
between 90Vdc and 120Vdc. This is the normal working voltage range.
The turbine must connect to a 3,5kW Kestrel voltage limiter. When the
load is disconnected, the output voltage of the turbine can rise to
280Vdc if not controlled by the voltage limiter.
