5000W/ 48V water heater dump load element [RE-wrenches]

[Hugh Piggott]

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>HI Hugh,
>
>Do you like the Tristar external relay package?
>thanks and happy holiday
>
>jay

Hi Jay,

No, I have not tried that yet.  Of course you don't need it for a 
thermostat transfer.  And I use analog circuits for the simple 
voltage switching jobs.

You could switch a heater based on battery voltage (the Proven wind 
turbine controller works like this) but the tristar does a better job 
of looking after the batteries with PWM so I would prefer to use that.

The relay driver looks fun though.   Could be handy for gen start.

Best

Hugh

>
>peltz power
>On Dec 23, 2006, at 8:35 AM, Hugh Piggott wrote:
>
>>
>>I normally recommend using a water heater on the tristar 
>>controllers I install.  It's well worth the hassle if there is a 
>>significant amount of power being dumped.  I use a relay (battery 
>>or inverter powered) via the thermostat to transfer the current to 
>>a space heater when the water is hot.  Obviously the relay needs to 
>>be able to handle the current, which tends to be high.  Also you 
>>will need a suitable wire run from the battery shed to the hot 
>>water tank.  A bit of power loss in this wire run is no big deal.
>>--
>>Hugh
>>
>>Scoraig Wind Electric
>>http://www.scoraigwind.co.uk/
>>
>
>
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-- 
Hugh

Scoraig Wind Electric
http://www.scoraigwind.co.uk/


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