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Reactive load AC Amp meter for reactive load?

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Reactive load AC Amp meter for reactive load? stu 10-16-2006
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Posted by on October 16, 2006, 7:32 am
To measure the current of an HVAC condenser fan motor, I used an old
Simpson analog shunt (non clamp-on) meter.



Assuming that the meter is operating as designed, is there any reason
why this meter would not give a correct reading?


Posted by Jeff Wisnia on October 16, 2006, 4:25 pm
stu@aaronj.com wrote:

> To measure the current of an HVAC condenser fan motor, I used an old
> Simpson analog shunt (non clamp-on) meter.
>
>
>
> Assuming that the meter is operating as designed, is there any reason
> why this meter would not give a correct reading?
>

Assuming the motor is powered directly from a sinusoidal line source and
not from some undefined exotic solid state speed controller, the answer
to your question is yes.

Amps are amps. Reactive current comes into play when you are figuring
real and imaginary power.

HTH,

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
"Rudeness is the weak man's imitation of strength."

Posted by DIMwit on October 16, 2006, 6:39 pm
Is your meter an Iron core or D'arsonval movement? AC or DC?
why am I responding to a plonkee? I must be crazy too.

> stu@aaronj.com wrote:
>
>> To measure the current of an HVAC condenser fan motor, I used an old
>> Simpson analog shunt (non clamp-on) meter.
>>
>>
>>
>> Assuming that the meter is operating as designed, is there any reason
>> why this meter would not give a correct reading?
>>
>
> Assuming the motor is powered directly from a sinusoidal line source and
> not from some undefined exotic solid state speed controller, the answer to
> your question is yes.
>
> Amps are amps. Reactive current comes into play when you are figuring real
> and imaginary power.
>
> HTH,
>
> Jeff
>
> --
> Jeffry Wisnia
> (W1BSV + Brass Rat '57 EE)
> "Rudeness is the weak man's imitation of strength."



Posted by on October 16, 2006, 8:59 pm

DIMwit wrote:
> Is your meter an Iron core or D'arsonval movement? AC or DC?
> why am I responding to a plonkee? I must be crazy too.
>
> > stu@aaronj.com wrote:
> >
> >> To measure the current of an HVAC condenser fan motor, I used an old
> >> Simpson analog shunt (non clamp-on) meter.
> >>
> >>
> >>
> >> Assuming that the meter is operating as designed, is there any reason
> >> why this meter would not give a correct reading?
> >>
> >
> > Assuming the motor is powered directly from a sinusoidal line source and
> > not from some undefined exotic solid state speed controller, the answer to
> > your question is yes.
> >
> > Amps are amps. Reactive current comes into play when you are figuring real
> > and imaginary power.
> >
> > HTH,
> >
> > Jeff
> >
> > --
> > Jeffry Wisnia
> > (W1BSV + Brass Rat '57 EE)
> > "Rudeness is the weak man's imitation of strength."


I inheritred this meter from my father-in-law who repaired air
conditioners.


The 0-30 Amp meter is built into a box with a receptacle cord on one
end and a plug on the other.

You plug it in and then plug you appliance in to measure its current
draw.


Thanks for you ample advice!


Posted by Jake on October 16, 2006, 9:41 pm
> I inheritred this meter from my father-in-law who repaired air
> conditioners.
>
>
> The 0-30 Amp meter is built into a box with a receptacle cord on one
> end and a plug on the other.
>
> You plug it in and then plug you appliance in to measure its current
> draw.
>
>
> Thanks for you ample advice!
>


Geeze, Stu....

You got a 'Wiggy' from him, too?

Jake

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