Electrical interference from SW2512 [RE-wrenches]

[Kurt Nelson, SunWise]

Windy Dankoff, Dankoff Solar wrote:
> 
> Here's a mystery.
> 
> We have a customer with a Trace SW2512, and one of our SunRise pumps
> with the battery system controller (which steps the voltage up, along
> with control functions).
> 
> Whenever his inverter is under a load of more than about 400 watts,
> his pump won't start (the controller freaks out).

Hey Windy,

I've had problems with other PWM charge controllers putting gunk onto
the line and screwing up other controllers.  Those of you with
Heliotrope charge controllers and older Wattsun trackers may want to
listen to the tracker and watch its (smooth?) movement when the charge
regulator is regulating.  Array Tech. has corrected for the problems
that some noisey charge controllers put on the line on their newer
electronics pachages, but if you hear funny noises from the tracker
motor and jerky movements, maybe give Ron a call.  Step up PWM charge
regulators might be putting even more out there and even (maybe more so)
when not charge regulating.  Where did you put the caps, on the PV
circuit or at the pump? -- Kurt Nelson


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