30 to 300 Volts
DC
90 to 240 Volts
AC HOME
For larger water pumping applications, Grundfos SQ Flex pumps are the answer.
Grundfos solar and wind pump kits start at about $2500.
The name SQ Flex underscores the system's flexibility: You
can choose from seven different solar pumps, which can be backed-up by wind
turbines, water reservoirs or diesel generators.
The SQ Flex pump family contains three helical rotor pumps and four centrifugal
pumps. The helical rotor pumps are used for high heads and low flows. The
maximum depth is 120 meters (375 feet), and the maximum flow is 2.5 m3 per
hour. The centrifugal pumps are best suited for wells with a maximum depth of
30 meters (100 feet). The biggest of Grundfos' centrifugal models can provide a
flow up to 14 m3 per hour. The 3 SQF-2, 6 SQF-2, and the 11 SQF-2 are helical
rotor type pumps. The others are centrifugal.
All of the pumps come with three phase motors that use permanent magnets
instead of brushes and have a maximum power input of 900 W of either AC or DC
voltage; for DC supply, a MPP-tracker for the integrated electronic unit can
optimize the pump's working point. Maximum current is 7 Amps.
The simplest SQ Flex package contains the pump, solar panels and a switch box.
If the solar power is insufficient to run the pump, or if you want to store
energy for times when the sun does not shine, you can add a water reservoir,
wind turbine or diesel generator. Whereas the SQFlex Combi package combines
solar and wind energy, the SQFlex Wind system relies solely on wind energy to
power the pump. Additional components include a control and communication unit
and switch boxes.
The control and communication unit monitors the system and
sounds an alarm in case of failures; the switch boxes close and open the
voltage supply, slow down or stop the wind turbine, provide interfaces and
transforms three-phase AC voltage into DC.
The pumps are designed for use with clean liquids, i.e. liquids that do not
contain solid or long-fibred particles larger than a grain of sand.
Please contact Solar-Stream with your water pumping
requirements and we will design a system to meet your needs. The SQFlex system is more than just
a pump. It's a total concept tailored to individual requirements. All we need to know is the location, the
water table depth and how much water is needed, and we will be able to find the
most efficient design and energy source for your system.
The
following table gives an idea of performance. If smaller PV arrays are used,
the amount of water will decrease proportionally.
|
Model |
Type |
Diam - inch |
Feet |
PSI |
GPH |
|
|
Feet |
PSI |
GPH |
|
|
11 SQF-2 |
ProgCavity
Sub |
3.0 |
30 |
13 |
660 |
260 |
|
300 |
130 |
366 |
900 |
|
25 SQF-3 |
Centrifugal
Sub |
4.0 |
8 |
3 |
1890 |
450 |
|
45 |
19 |
1080 |
450 |
|
25 SQF-6 |
Centrifugal
Sub |
4.0 |
30 |
13 |
1890 |
900 |
|
90 |
39 |
1170 |
900 |
|
3 SQF-2 |
ProgCavity
Sub |
3.0 |
30 |
13 |
144 |
140 |
|
360 |
156 |
132 |
350 |
|
40 SQF-3 |
Centrifugal
Sub |
4.0 |
6 |
3 |
3360 |
800 |
|
30 |
13 |
1920 |
800 |
|
6 SQF-2 |
ProgCavity
Sub |
3.0 |
30 |
13 |
288 |
225 |
|
360 |
156 |
246 |
625 |
|
75 SQF-3 |
Centrifugal
Sub |
4.0 |
6 |
3 |
4320 |
900 |
|
45 |
19 |
2250 |
900 |
Solar-Stream
(603) 878-0066 ~ www.solar-stream.com
Email: sales@solar-stream.com