[Prev][Next][Index][Thread]

Re: More power



In a message dated 96-03-18 00:16:02 EST, you write:

>
>The acutal rating is, I believe, 17% over the input line voltage
>when the variac is wired for over-voltage use. You are correct in
>that the terminals are numbered 1 - 5. In "overvoltage" mode the
>variac is wired with #1 common to both input and output. Terminal
>#2 is used for the second input. Terminal #3 is the second output
>(wiper brush). Terminals #4 and #5 are not used.
>
>> With 280 volts in, at 60 : 1, I would have 16,800 volts out.  
>> Will this smoke my 15 KV Condenser Products capacitor?
>
>Good question. Personally I feel the 15KVAC rms/pulse Condenser
>Products capacitor could take it; but if it were mine I would not
>risk it unless I was sure that other factors (voltage drop from
>current limiting) were bringing the actual HV feed voltage back
>to around 15 KVAC.
>
>
>Richard Quick

Richard,

Thanks for the response.  I checked the numbering on the Powerstat again this
weekend and my current wiring.  There are 5 terminals in a row across the
face of the Powerstat in kind of a V formation.  From left to right they are
numbered 4, 2, 5, 1, 3.  I currently have one side of the line in connected
to # 4 and the other side of the line to # 1.  My load is connnected to # 1
and to the fused terminal # 3.  I think you are saying all I need to do is
move the line wire from # 4 to # 2 - is this correct?  At 17% increase with
240 volts in, the output would be 280 volts.  Is there a way to get less than
280 volts?  Like what is terminal # 5 used for?  Do you have a book on this
beast?  Anyone else?

I agree, I should try not to exceed the rated 15KV on my capacitor.  Once I
get the coil fired up again, I will measure the primary voltage on the pig
with the current set up.  At 60 : 1 turns ratio in the pig, I want to get the
primary voltage up to 250 volts, but not much higher.

Ed Sonderman