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    • Voltage Switches... your suggestions?

    Registered Users Posts: 16 ✭
    in Advanced Solar Electric Technical Forum #1
    Im looking for a voltage switch for my 12v fridge.

    Does anyone know if there is something like this on the market?
    http://www.warlock.com.au/141209.htm

    Im good with electrical but not electronics from scratch so not keen to tackle that project.

    3 outputs set at different voltages would be great eg.

    If running from say 120w-240w panel.

    13v fridge turn on.
    13.2v exhaust fan on.
    13.4v small 60w inverter with phone chargers ipod charger etc.

    Anyone have ideas?
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    • Banned Posts: 17,615 ✭✭✭
      #2
      Re: Voltage Switches... your suggestions?

      I don't know of any one unit with multiple outputs (e.g. three different activations programmable at different levels) but Voltage controlled switches/relay drivers aren't hard to find:
      http://www.solar-electric.com/volcon.html

      They cost a bit, though. Relays needed to handle high current, of course.

      There are also small charge controllers with Low Voltage Disconnects which could 'drop out' a device if battery Voltage went below the set level. These aren't meant to handle high current either.
      One example: http://www.solar-electric.com/ss-20l.html

      The high-end charge controllers like Outback FM60 have a programmable AUX function which can be used to turn on/off something according to user selectable parameters.

      Just some options to consider.
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    • Solar Expert Posts: 49 ✭
      #3
      Re: Voltage Switches... your suggestions?

      It will work with Morningstar combination Relay driver and Tristar PWM or MPPT. It can control up to 4 relays. Use it the free Morningstar software MSView to configure your ON/OFF voltage.

      Relay driver
      http://www.solar-electric.com/moredr.html

      Tristar PWM controller
      http://www.solar-electric.com/trts12vochco.html

      Tristar MPPT controller
      http://www.solar-electric.com/motr60ampmps.html

      And relays. I used a switched relay outlet that Turn ON/OFF based on what the relay driver tell it to do. A switched oulet like Middle-Atlantic RLM-15 that connect charger when the MSView tells the relay driver to turn on.
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    • Registered Users Posts: 16 ✭
      #4
      Re: Voltage Switches... your suggestions?

      Do you guys know if the sunsaver 10 with LVD is user adjustable?
      http://www.solar-electric.com/ss-10l.html
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    • Solar Expert Posts: 274 ✭✭
      #5
      Re: Voltage Switches... your suggestions?
      Stone Mason wrote: »
      Do you guys know if the sunsaver 10 with LVD is user adjustable?
      http://www.solar-electric.com/ss-10l.html

      I don't believe so. Looks like your stuck with 11.5V disconnect and 12.6v reconnect (12V).
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    • Solar Expert Posts: 49 ✭
      #6
      Re: Voltage Switches... your suggestions?

      3 equipment at 3 different voltages = relay controller
      13v fridge turn on.
      13.2v exhaust fan on.
      13.4v small 60w inverter with phone chargers ipod charger etc.
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    • Registered Users Posts: 16 ✭
      #7
      Re: Voltage Switches... your suggestions?
      SolarT wrote: »
      3 equipment at 3 different voltages = relay controller

      Suggestions of an affordable one, its just really to run my fridge... 12v 4.5a
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