10
SOLAR PUMPING
Guidelines - Electrical design and installation of solar pumps
1. SOLAR PUMPING TYPES
There are 3 main types of solar pumps whose standard curves are presented below:
① Motorized hand pumps.
This is the same mechanism as the one used in manual pumping (piston and rods, «India
Mark» type), on which an engine/motor is added to replace human operation.
② « Solar pumps »
powered directly via a suitable pump controller, that should be supplied by the pump manufacturer
to ensure compatibility.
③ Conventional pumps
(usually powered by generator) that will be powered via a variable frequency inverter, commonly
called « solar pumping inverter ».
FIGURE 1:
SOLAR PUMPING SCHEMES ACCORDING TO WATER
FLOW AND TOTAL HEAD
TABLE 1:
BASIC CONFIGURATION ACCORDING TO FLOW AND TOTAL HEAD
CONFIGURATION
Motorized hand pumps
①
“Special Solar” pumps
②
Conventional pumps
③
Power
< 250 W
< 0,35 HP
250 W to 4 000 W
(max 2 000W only for some
suppliers)
0,35 HP to 5 HP
> 4 000 W
> 5 HP
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