12/24 V @ 30 Amps Linear Current Booster/Pump Driver
Application
Used to control and power a DC motor from a solar panel. The unit prevents stalling of the motor under less than full sun condition. The power of the sun is transformed to the motor running conditions so as the sun goes down the motor slows down instead of stalling. Conversely, or as the sun comes up the motor starts running much earlier instead of staying stalled for hours when it could be running. This translates into more running time of the motor where it spends a lot of time working instead of stalled doing no work.
Features
- Voltage Limited Output to 15 / 30 V
- Greatly increases water flow, even under reduced sunlight conditions (over 40% likely)
- Transient Protected on the input and output
- Float/Dry Switch input for on/off control
- Pump Protection Features - Well Dry, Low Sun, Current Limited, Temperature Limited
- LED Display of pump performance
- Interface for Optional Digital meter MT-3
- Ultra High Efficiency >94%
- Rainproof NEMA 3R enclosure
Electrical Specifications
| Nominal Voltage (V) | 12 | 24 |
| Nominal PV Input (V) | 12 | 24 |
| Maximum PV Input (V) | 50 | 50 |
| Maximum Output Voltage (V)** | 15 | 30 |
| Maximum Output (A) | 40 | 40 |
| Maximum Output (A) short term - 10 sec |
60 | 60 |
| Efficiency | >95% | >95% |
** Special units have a suffix of M XX after the part number. The maximum output voltage of the pump driver is XX. For example PPT 12/24 - 30 M6 will power a 6 V motor from a nominal 12 V solar panel. Note that the motor current increase by the ratio of approx. 15/6. Thus a 1 amp 12 V nominal solar panel will power the motor at 2.5 Amps.
User Controls
Pump On/Off, ResetLED Display
Start Delay, Dry Well??, Dry Well Delay, Float Switch Activated, Current Limit, Pump Voltage / Power, Over Temperature ControlledProtections
Dry Well:- Unit senses when the well is dry by sensing very low pump current - no load on pump. If
the condition exist for three seconds, the output is disabled for 20 minutes to allow the well
to refill. Reset clears this condition.
- Unit senses when the sun is producing too little power to reliably run the motor (1/4 power point)
and will shut off for 3 minutes to prevent unnecessary brush wear.
- The uinit will reduce motor power if the unit is running too hot to maintain a constant
unit temperature and prevent unit failure form overtemperature
- The unit will current limit its output to protect the unit and the load from jammed motor/ low resistance
operation. An external fuse rated for the motor is recommended.
Mechanical Specifications
Weight:
- approx. 11 lbs.
- 10" X 8" X 4" nominal, NEMA 3R (rainproof) enclosure
- -40 to 70 deg. C
- NEMA 3R Enclosure
Connections
- Power: PV and Load
- #6 AWG AWG Eurostyle Terminal Strip
- Voltage Select, Reset, Delay Override, Float/Dry Switch control NO and NC styles supported
- Signal: #16 AWG Eurostyle Terminal Strip
Application Notes
- This Pump Power Tracker(TM) is quite capable of putting out over 60 amps into a stalled load even from a single 30 watt 4.5 amp panel. It is recommended that a fuse or overtemperature switch matched to your pump motor be incorporated in the system to protect your pump or motor. The unit's internal fuse will protect the unit.
- Float switch operation draws microamps of current, i.e. small wire gauge, allowing long distance runs between float switches / holding tanks, and PV / pump driver without the need to string long lines of heavy gauge wire.
- Unit is a true 40 amp unit, all necessary derating already accounted for.
- As with all electronics, it is recommended the unit not be mounted in direct sunshine.
- Solar panel or energy limited input only.
Mechanical Drawing: Click here for picture
Note: In the interest of continuous product improvement, specifications subject to change without notice.