Parasitic drain

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Parasitic drain

Postby PeterM » Tue Feb 14, 2012 8:53 pm

Hi,

Could someone tell me if I can use the PP218 current clamp to check for parasitic drain?

Thanks

Peter
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Re: Parasitic drain

Postby Robski » Tue Feb 14, 2012 8:57 pm

yes of course you can......

Low Amps clamp parasitic draw.JPG
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Re: Parasitic drain

Postby Darren Cotton » Tue Feb 14, 2012 10:49 pm

Nice pointy things Robski....

oh and was that an alternator fault causing your drain?

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Re: Parasitic drain

Postby Robski » Tue Feb 14, 2012 11:09 pm

Darren Cotton wrote:Nice pointy things Robski....

oh and was that an alternator fault causing your drain?

Darren


Hello Darren :D

Yes they are nice pointy things aren't they :lol:

And yes the alternator was drawing from the battery, in hind sight i think i would have been on it quicker had i done a ripple test maybe ? :roll:
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Re: Parasitic drain

Postby PeterM » Thu Feb 16, 2012 7:36 pm

Hi,(pointy things).
Thanks for the reply. Are you sure its the PP218 that you are using, as it does not appear to work for me. How would you connect it. We are talking milli-amps. Thanks a lot,
Peter.
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Re: Parasitic drain

Postby Robski » Thu Feb 16, 2012 7:45 pm

How are you connecting & what scope are you using ?
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Re: Parasitic drain

Postby PeterM » Thu Feb 16, 2012 8:16 pm

Hi,
Appreciate your reply. If i connect my multimeter between battery positive terminal and the positive lead , it tells me i have approx 0.5 amp drain (500 m/a).I have an adapter that fits between battery positive or battery negative so that a current clamp meter will fit around nicely between the terminal post and the relevant lead. Perhaps i need something else other than the PP218. This is just a query . Thanks. Scope is a 3223,
Peter
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Re: Parasitic drain

Postby Robski » Thu Feb 16, 2012 8:28 pm

Peter

When i measure parasitic drains i take the neg lead off & use a fly lead with strong croc clips between batt post & terminal then the clamp goes round the fly lead.

I use the preset amps scale,if when the amperage is dropping low enough i may change the scale to mV.
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Re: Parasitic drain

Postby Dave Hill » Thu Feb 23, 2012 11:45 pm

Hi Peter

Here is an example of what you are trying to achieve....

https://www.picoauto.com/tutorials/battery-discharge-problem.html

This was performed with the PP264 60 A Current Clamp that came bundled with my Automotive kit.

I used the same "fly lead" method that Rob mentioned.

When I doubt or question my test results, I try to challenge the equipment. In the case of battery discharge testing, I find it useful to turn on a "consumer" such as the headlights, if only to confirm that my measuring device is working correctly.

"Test your test methods" is something that I have learned the hard way.

HTH
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