Assuming the DC gound wire is grounded to the chassis, verify you don't have a voltage leak to the chassis. Measure your voltage using a multimeter from most positive to chassis ground.
The first time I plugged into a GFCI, I had that problem with my PFC20. My pack consists of T125 floodies. I found the wet dirty battery and moist insulation...cleaned it up and installed some polypropelene as an additional barrier in my battery box.
JD
--- On Thu, 5/15/08, dave cover <
davecover@...> wrote:
> From: dave cover <
davecover@...>
> Subject: [EVDL] PFC-30 Reinstallation problem
> To: "Electric Vehicle Discussion List" <
ev@...>
> Date: Thursday, May 15, 2008, 12:11 PM
> To all you Manzanita Micro fans, I have a dilema. I have a
> pack of 142
> BB600s in my car and I'm just finishing up reinstalling
> everything. Last
> year, before I took it all apart I had 144 BB600s. I had to
> move some to
> another location and fit all but two cells in the new
> location. Last year
> the PFC-30 worked fine charging the pack. Now, when I try
> and charge it runs
> fine for a minute or two and then trips the breaker.
>
> Before firing up the charger the pack was at 170 volts.
> BB600's are usually
> flat at 1 volt per cell, charged at 1.2 volts per cell, and
> charging voltage
> can easily go to 1.55 volts per cell or higher. So the pack
> was not dead,
> even though it sat a while.
>
> When I first fired up the PFC, the voltage rose like
> normal, up to around
> 189 volts. One odd clue is that my eMeter shows the correct
> voltage, but
> doesn't show any charge current. When I fired it up I
> had the charge knob
> turned down, but when I turned it up it had no effect on
> the charge current.
> I have a twisted pair running directly from the shunt to
> the eMeter, no
> breaks or connections. I think the eMeter is correct but
> have no other way
> to measure current?
>
> On top of it all I have an appointment with Motor Vehicle
> tomorrow and I'd
> really like to have a bit more of a charge on the pack
> before then.
>
> What kind of things could cause the PFC to trip my breaker?
> What might
> prevent the charge current from ramping up? Are there any
> debug codes I can
> read from the charger? (No, I don't have any RegBus.)
>
> It is a GFCI breaker, but never tripped before. It works
> fine with my
> welder.
>
> Thanks
>
> Dave Cover
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