[ARC5] Dynamotor Regulation

[DSP3]

For what it may be worth, I use a PP-4763A power supply, well known for 
its ability to trip at 1ma over 50 amps....hi!  I use a parallel battery 
and a .25 ohm 200w watt resistor as a manual operated output soft-start 
for the PP-4763.   So far no issues with either the DY-17A or the PE-73C 
dynamotors.

Jeep - K3HVG


On 7/29/2017 9:38 AM, Christopher Bowne wrote:
> For the ARC-5 /274 systems you can easily get by with 2 20 buck garden 
> tractor batteries from Walmart in series each floated with a separate 
> 10 amp 12 battery charger.  I have been using that type of set up for 
> over 30 years with two basic Sears chargers.  I also use the small 
> garden tractor batteries in series across my PP-7773 60A 28vdc supply 
> to run my ART13/DY17A setup.  However, the small batteries don't have 
> quite enough oomph to prevent the DY-17 starting surge from tripping 
> the 7773 output breaker, l usually have to reclose it once the dyno is 
> running.  With fully charged bigger deep cycle marine or car batteries 
> the breaker usually will not trip.  I have also found from experience 
> with the 7773 that you need to physically disconnect the batteries 
> from across the output of the supply when it is shut down.  There is 
> some drain on the batteries from the 7773 even with its output breaker 
> open, from at least the voltmeter circuit,  which will drag down the 
> batteries over several days.  I just disconnect the lead between the 
> two batteries to put them on open circuit.
>