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Diversion Load Information In most hydroelectric and wind-powered battery charging systems, the charging source cannot be disconnected from the batteries while running without the possibility of damaging them from over-voltage. The typical way to regulate battery charging voltage with this type of generating system is to use a "load diversion" type charge control. The Morningstar TS45 and TS60 and the Xantrex C-35, C-40 and C-60 can be configured for this mode of charge control. A diversion-type charge control also may be used in a PV system. If the array is much larger than necessary to charge the battery, excess power can be used to heat water by using a water heating diversion load. In operation, when battery voltage reaches the full charge setting in the charge control, it begins to divert power to the diversion load. The control uses pulse width modulation to turn the load on just enough to keep the battery voltage from rising further. To determine wattage of these diversion loads at other voltages, use Ohm’s Law formula: Voltage = Amps x Ohms The critical requirements are that the diversion load can dissipate more watts than the charging source can deliver, and that the maximum amperage that the load can draw is smaller than the maximum diversion rating of the charge control. Order one or more loads with a total current (amps) draw greater than your charging system’s maximum output, but no more than the maximum power rating of the charge control in the diversion mode. We recommend that you do not use a load that draws more than 75 percent of the maximum rating of the charge control. For example, if the charging source can deliver 20 amps at 24 volts, use a 30 amp diversion load with a 40 amp or larger charge control. |
These low-voltage water-heating elements are for use as diversion loads
for wind or hydroelectric systems. Use one or more of these heating elements
with a charge control designed for load diversion, such as the Xantrex C40
or C60, Morningstar TS-45 or TS-60 or the Outback MX-60 to turn your excess
power into hot water. They fit most standard electric water heaters with
screw-in elements. We have one model for 12
volt and 24 volt systems and another for higher power 24 volt systems and 48
volt systems.
Each unit has two elements that can be wired in series or parallel or used individually, depending on voltage and desired amp draw. See the chart to determine what each element will draw at various charging voltages.
If your water heater tank is designed for square flange elements, use one square flange adapter for each element. 1" male pipe threads.
2-year warranty.
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Regulation Voltage > |
14.00 | 28.00 | 56.00 | PART NUMBER | OUR PRICE | Purchase | |||||
| Model | Wiring | Ohms | Amps | Watts |
Amps |
Watts |
Amps |
Watts |
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| 12/24v | Series |
0.96 |
14.6 | 204 |
29.2 |
817 | 21.9275-1 | $130 |
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| Single | 0.48 | 29.2 | 408 | 21.9275-2 |
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| Parallel | 0.24 | 58.3 | 817 | 21.9275-3 |
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| 12/24/48v | Series | 2.48 | 5.6 | 79 | 11.3 | 316 | 22.6 | 1265 | 21.9279-1 | $92 |
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| Single | 1.24 | 11.3 | 158 | 22.6 | 632 | 21.9279-2 |
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| Parallel | 0.62 | 22.6 | 316 | 45.2 | 1265 | 21.9279-3 |
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| Square Flange Element Adapter | 21.9285 | $12 |
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These resistive loads enclosed in vented aluminum boxes can be used in 12, 24 and 48 volt diversion regulation systems. The aluminum box may get very hot in operation. It should be mounted at least 12" from any flammable material.
HL-100 is shipped as a 4-ohm resistor and can be reconfigured as a 1, 0.5 or 0.25 ohm resistor by easily changing connections in the terminal block.
HL-75 is shipped as a 3-ohm resistor and can be reconfigured as a 0.75-ohm resistor by changing connections in the terminal block. See chart below for diverted amps at various voltages.
Warranty: 2 years.
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Model Number |
Resistance Setting |
Diversion Load Amps at Voltage Below | PART NUMBER | OUR PRICE | Purchase | |||||
| 14V | 15V | 28V | 30V | 56V | 60V | |||||
| HL-100 | 0.25 | 56 | 60 | 21.9330-1 | $235 |
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| 0.50 | 28 | 30 | 21.9330-2 |
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| 1 ohm | 14 | 15 | 28 | 30 | 21.9330-3 |
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| 4 ohms | 3.5 | 3.8 | 7 | 7.5 | 14 | 15 | 21.9330-4 |
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| HL-75 | 0.75 ohms | 19 | 20 | 38 | 40 | 21.9333-1 |
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| 3 ohms | 4.7 | 5 | 9.3 | 10 | 19 | 20 | 21.9333-2 |
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