Document No. 1112M001 Revision 1.8 Date: June 2013
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The use of this arrangement depends on the input voltage range of the
chosen inverter which must be able to accept up to 600Vdc. The Power-
One Aurora 3.6 is suitable because it can accept up to 600Vdc.
Detailed information can be found in the grid-tie inverter manual. The
following information highlights points relevant to the turbine.
The Kestrel e400nb wind turbine is rated at 250Vdc. The power range from
0 – 3.5kW is developed between 220Vdc and 250Vdc. This is the normal
working voltage range. In certain modes of operation, the turbine can output
much higher voltage.
This 250V turbine is solely intended for use in grid tie installations. The
turbine must connect to a Kestrel 3.5kW interface module (575V) that in
turn is connected to the grid tie inverter input. Any grid tie inverter will
disconnect itself from time to time. These times of disconnection are normal
during the correct operation of the inverter. When such a disconnection
takes place, the output voltage of the then unloaded turbine can rise to
550Vdc. The inverter must be rated to accept up to 600Vdc on the input.
The Kestrel e400nb remains in control through reliable blade pitch
adjustment. The interface module has an additional overvoltage protection
circuit.
5.5 Electrical Installation (e400nb 48Vdc and MPPT Charge
Control)
Under no circumstances should the Kestrel e400nb be directly
connected to any charge controller. The 48Vdc turbine must be
connected through the Kestrel interface module (175V).
A charging installation supplies electrical energy from the wind
turbine to an installed battery. A Kestrel voltage limiter does not
provide any charge regulation or control. Charge control is the
function of an additional charge controller.
The installation must comply with the local electrical codes that
are in force in the country of installation. Please consult your
area dealer or a local qualified electrician.
The installation must be installed by qualified personnel and
comply with the local electrical codes and norms.
