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Michael Cunich


Michael Cnich
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On 2020/11/21 at 10:09 AM, Michael Cnich said:

Firstly will this hurt the 24 volt pump .

Hard to be certain, but I'd say probably yes.

It would be ideal to use a solar pump device, which will limit the output voltage, and also get the most out of the panels in poor light conditions.

The timer will need a DC rated relay, which is not common. Most AC relays can handle up to 30 VDC, so if you have a device to limit the voltage, you might get away with it.

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The devices used for this are referred to as charge controllers but they can be used in any application.

There are 2 types of these (MPPT and PWM). See the Victron article below to highlight the differences. 

If your'e adventurous you could try a DC-DC Buck converter. You'll need on with a high enough voltage. e.g. https://www.mantech.co.za/Datasheets/Products/DC-DC-12A-100W.pdf

Any of these devices can switch the load with a regular timer by accessing the circuit,,

White-paper-Which-solar-charge-controller-PWM-or-MPPT.pdf

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