Document No. 1112M001 Revision 1.8 Date: June 2013
24
nut sets (33) and torque to
10Nm (7.5ft lb)
.
5.0 Electrical Installation
5.1 Lightning Protection (No responsibility is accepted)
The tower must be properly grounded to local codes. Suitable SPD’s
(Surge Protection Device) should be fitted at the power input
connections to the electronics. SPD’s are not a standard fitment in the
interface module. Consult your supplier for guidance and fit locally
approved SPD’s.
The following is included for guidance only.
The turbine will operate over a range of voltage given in the table
below. The SPD must be rated for dc use.
Turbine Voltage
48Vdc
110Vdc
250Vdc
Operating Range
0 – 140Vdc
0 -290Vdc
0 – 580Vdc
SPD Voltage
200Vdc
350Vdc
650Vdc
The turbine output power form is two wire dc. Many authorities require
GFD (Ground Fault Detection) and therefore the turbine output wires
are isolated and not connected to ground. It is recommended to utilise
an inverter or charge controller
with internal GFD. Alternatively,
a separate GFD unit can be
installed. If the cable distance
between the tower base and
the input to the downstream
electronics is less than 10m
(33’) then surge protection may
be fitted only at the electronics.
If the distance is greater, then
surge protection should be
fitted at the tower base and at the electronics.
Note that the same positioning of SPD’s applies to a battery charging
installation where a charge controller replaces the inverter.
