Re: The right Cap for the job

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Robin Copini by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rcopini-at-merlin-dot-net.au>

Matt,

 I have had great success with this cap series on both my pigs. The final
cap
operates on a 33kv pig and is bullet proof.

take a look at

 http://www.geocities-dot-com/rcopini/tcap.html

Mail me if you have any questions.

BTW Terry,

 Great work on the OLTC .. very interested in how you get on.

Best Regards

 Robin in OZ.



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, August 23, 2002 9:49 AM
Subject: The right Cap for the job


> Original poster: "Matt Skidmore by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <fox-at-woozle-dot-org>
>
> Since today was my last day at the summer job i took the oppertunity to
> research the right cap to use for a pole pig. i've be able to locate some
> very compelling deals and decided to figure out what capacitance i would
> need.
>
> Ive been searching for 2 different types of pig voltages to see what i
> could find. ive looked for 14400 and 19900 volt pigs both at 10kva. for
> the 14400v pig i just ran a loose va divided by voltage to get 694mA
> output and 502 mA output for the 19900 pig.
>
> i started configuring MMCs using the geek cap specs and then tried
> selecting various other caps from the cornell dub 942C cap series. i based
> my prices off of the Richardson Electronics website (catalog.rell-dot-com) and
> tried to find the cheapest possblie capacitor for the above mentioned
> transformers.
>
> my calculations show that for the 14400v 10kva pig the 1600v 0.56uF cap
> (942C16P56K) yeilds the lowest cost. and the 1600v 0.69uF cap (942C16P68K)
> would be the better for 19900 pigs.
>
> no research was performed on the performance of the overall capaitor.
> since all of these capacitors are of the same series and type i would
> expect similar results from the group.
>
> by request i have a color coded html table too.
>
>
> Transformer 10 KVA 10 KVA
> Output (V) 14400 19900
> Output (mA) 694 502
> Input (V) 240 240
> Input (A) 42 42
> Capacitance Reqired (uF) 0.128 0.067
>
>
>
> 942C20P15K
> Voltage 2000
> Capacitance (uF) 0.15
> Price ($) 2.52
>
>
> 942C16P68K
> Voltage 1600
> Capacitance (uF) 0.68
> Price ($) 4.27
>
>
> 942C16P56K
> Voltage 1600
> Capacitance (uF) 0.56
> Price ($) 3.69
>
>
> 942C16P47K
> Voltage 1600
> Capacitance (uF) 0.47
> Price ($) 3.38
>
>
>
> Transformer 14400 19900
>
> 942C20P15K
> Caps Per String 11 15
> Number of Strings 10 7
> Total Number of Caps 110 105
> Total Capacitance (uF) 0.1364 0.07
> Rated Voltage (V) 22000 30000
> Total Cost ($) 277.2 264.6
>
> 942C16P68K
> Caps Per String 13 18
> Number of Strings 3 2
> Total Number of Caps 39 36
> Total Capacitance (uF) 0.1569 0.0756
> Rated Voltage (V) 20800 28800
> Total Cost ($) 166.53 153.72
>
>
> 942C16P56K
> Caps Per String 13 18
> Number of Strings 3 3
> Total Number of Caps 39 54
> Total Capacitance (uF) 0.1292 0.0933
> Rated Voltage (V) 20800 28800
> Total Cost ($) 143.91 199.26
>
>
> 942C16P47K
> Caps Per String 13 18
> Number of Strings 4 3
> Total Number of Caps 52 54
> Total Capacitance (uF) 0.1446 0.0783
> Rated Voltage (V) 20800 28800
> Total Cost ($) 175.76 182.52
>
>
>