40 sq ft swept area
propeller diameter 7FT/2.1M
19 Lake Avenue North, Duluth MN 55802 USA
phone 218-722-1492 • fax 218-722-0791
web: www.worldpowertech.com
Quality made
in the U.S.A.
Whisper H40
Authorized Dealer
WHISPER H40 (Replaces WHISPER H900) 7 ft (2.1 m)diameter7 ft (2.1 m)diameter
7 ft (2.1 m)diameter7 ft (2.1 m)diameter
7 ft (2.1 m)diameter➡40 sq ft (3.6 sq/m) swept ar40 sq ft (3.6 sq/m) swept ar
40 sq ft (3.6 sq/m) swept ar40 sq ft (3.6 sq/m) swept ar
40 sq ft (3.6 sq/m) swept areaea
eaea
ea➡105 kwh/mo*105 kwh/mo*
105 kwh/mo*105 kwh/mo*
105 kwh/mo*
SIZE MATTERS
The new look
of wind power
3–3.8 ft diameter
7-11 sq ft area
under 30 kwh/mo*
5 (1.5 m) ft diameter
20 sq ft (1.8 s/m)
area
53 kwh/mo*
7 ft (2.1m) diameter
40 sq ft (3.6 s/m)
area
105 kwh/mo*
*in 12 mph (5.4 m/s) average wind speed
H40
H20
OTHER
The all new WHISPER H40
Rated power@10m/s(22mph) 460 watts
Cut-in wind m/s / mph 3.4/7.5
Controller included EZ 120/1600
Molded, fiber reinforced blades 3
Prop tip to center cm/in 34/14
Min. blade clearance cm/in 20/8
Battery voltage standard 24
Battery voltages selectable 12/32/48
Standard mount pipe/tube 2.5"schd40
Lateral thrust nts/lbs 430/100
Tower top weight kg/lbs 21/47
Ship dim cm/in 107x36x31 / 42x14x12
Ship wt kg/lbs 39/85
SPECIFICATIONS
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
Average
Compare: twice the area = twice the electricity
New Angle Governor
•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
You need the patented World Power
ANGLE GOVERNOR for:
•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
INDUSTRY LEADER SINCE 1978
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 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.
