9
ENGLISH USERS MANUAL WINDMASTER 500
Power Curve
The Windmaster 500 converts DC power from a
wind turbine to the AC grid based. This conversion
is based upon a linear curve with a start voltage and
a maximum operating voltage (see figure 1). These
parameters may be adjusted and optimized by the
system vendor for use with a particular wind turbine.
When DC voltage reaches the threshold voltage to
start up the Windmaster, the inverter starts a 5
seconds countdown before delivering energy to the
AC grid.
Figure 1
Example installation diagram
See figure 2. This drawing is not specific for any
wind turbine or installation. It is provided as a basic
reference, showing necessary major components
and installation sequence. Please contact your
system vendor for detailed installation drawings,
specific for you wind turbine.
DC interface
The DC interface is for protection of the Windmaster
500, and should provide the following.
• Surge protection (if applicable)
• Over voltage protection, max. 150VDC (*)
• Disconnection switch (if applicable)
(*) Mechanical either electrical OVP may be
integrated in the wind turbine
Grounding
The Windmaster 500 is a class II device with
galvanic isolation between DC and AC. The inverter
doesn’t need to be grounded. Grounding of the
Wind turbine however is recommended.
Paralleling
Multiple Windmasters 500 can be operated in
parallel to increase output power. The DC-side of
each Windmaster 500 must be protected by a 10A
(slow blow) fuse (refer to fig. 2).
Figure 2
10 20 30 40 50 60 70 80 90 100 110 120130 140150
50
100
150
200
250
300
350
400
450
500
550
Udc [V]
Pdc [W]
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