I believe the DC/DC has built in isolation, but don't quote me on that.
I'm at least pretty sure that the DCP model does...
Seth
On Wednesday, October 9, 2002, at 01:49 PM, [EMAIL PROTECTED] wrote:
> Question: how do you isolate your system when the pack is attached to
> DC/DC
> and 12v is always on?
>
> -Ed T
>
> -----Original Message-----
> From: Seth Murray [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, October 09, 2002 10:20 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Yet another charger question
>
>
> unless I'm mistaken, what Rich is saying is that if you properly design
> the car, isolating the charger isn't really an issue. The reasons for
> isolating your battery pack from the frame and body of the car is, of
> course, to prevent electric shock of the innocent bystander or
> yourself. Your main battery pack should not be connected directly to
> the frame of the car, obviously, but in addition to that, there are a
> few other ways in which your traction pack could become connected to
> your frame, posing a potential issue. The simplest reason is through
> faulty wiring, second, battery shmutz makes the connection through your
> batt boxes, and third, which Rich was indirectly mentioning, is through
> carbon dust buildup in the motor. In a properly designed car, both
> sides of your traction pack are disconnected from the drive system (and
> hence the motor) when the car is turned off, eliminating the potential
> for there to be a connection through the motor. Have dual contactors,
> do your wiring well, take care of your batteries (or use sealed ones),
> and your pack is completely isolated from the frame of your car, hence
> no issue with charging. Am I mostly right here? Personally, I think I
> would use a GFI breaker with my future PFC, just in case.
>
> Seth
>
>
>
>
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