Whisper H40
WHISPER H40
Designed for outstanding performance in all wind speeds. Use the Whisper H40 to provide power for
charging batteries for cabins, small homes, ham radios, telecommunications, remote monitoring and
signaling, cathodic protection, oil platforms, rural electrification and many other applications.
The new look
of wind power
Quality made
in the
U.S.A.
The all new WHISPER H40
features
• brushed aluminum casting
• enclosed windings and
rotor
• patented ANGLE
GOVERNOR (see below)
• exclusive EZ-Wire System
Center (see reverse)
• lifetime molded blades (3)
• highest efficiency blade
design in the industry
• high output windings
• lifetime brush and slipring
assembly
• 2-year warranty
• ready for up to 700 watts
of PV
Authorized Dealer
propeller diameter 7FT/2.1M
(Replaces WHISPER H900)
The Whisper H40 with twice the swept area (40sq ft/ 3.6 sq/m) of the H20 gives you twice the
electricity, more than 100 kwh/month in a 12 mph average wind speed. Select the H40 for
a tremendous value for your money.
New Angle Governor
SIZE MATTERS
7 ft (2.1 m)diameter
7 ft (2.1 m)diameter
7 ft (2.1 m)diameter
7 ft (2.1 m)diameter 40 sq ft (3.6 sq/m) swept ar
7 ft (2.1 m)diameter
40 sq ft (3.6 sq/m) swept ar
40 sq ft (3.6 sq/m) swept ar
40 sq ft (3.6 sq/m) swept ar
40 sq ft (3.6 sq/m) swept area ea ea ea ea 105 kwh/mo*
Compare: twice the area = twice the electricity
OTHER
5 (1.5 m) ft diameter
20 sq ft (1.8 s/m)
3–3.8 ft diameter
7-11 sq ft area
under 30 kwh/mo*
*in 12 mph (5.4 m/s) average wind speed
Average
Wind Speed Kilowatt Hrs.
mph m/s
kwh/month
8
3.6
31
9
4.0
45
10
4.5
63
11
4.9
83
12
5.4
105
13
5.8
129
14
6.3
153
You need the patented World Power
ANGLE GOVERNOR for:
• MAXIMUM OUTPUT in low winds (unlike
folding tail designs)
• MAINTAINED OUTPUT in high winds
• WHISPER QUIET in all winds
• FULL FURLING SURVIVAL in extreme winds
I N D U S T R Y L E A D E R S I N C E 1 9 7 8
19 Lake Avenue North, Duluth MN 55802 USA
phone 218-722-1492 • fax 218-722-0791
e-mail: sales@worldpowertech.com
web: www.worldpowertech.com
105 kwh/mo*
105 kwh/mo*
105 kwh/mo*
105 kwh/mo*
H40
H20
7 ft (2.1m) diameter
40 sq ft (3.6 s/m)
area
area
53 kwh/mo*
105 kwh/mo*
S P E C I F I C AT I O N S
Peak power@12.5m/s(28 mph) 900 watts
Rated power@10m/s(22mph)
Cut-in wind m/s / mph
Controller included
EZ 120/1600
Molded, fiber reinforced blades
Prop tip to center cm/in
Min. blade clearance cm/in
Battery voltage standard
Battery voltages selectable
Standard mount pipe/tube
Lateral thrust nts/lbs
Tower top weight kg/lbs
Ship dim cm/in
107x36x31 / 42x14x12
Ship wt kg/lbs
460 watts
3.4/7.5
3
34/14
20/8
24
12/32/48
2.5"schd40
430/100
21/47
39/85
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