[Prev][Index][Thread]

Re: Current XFMR




Steve,

The CT s that you are looking for are the modified Rogowski type and are 
never seen at common hamfests,  I have looked for years.  These are custom 
items and new costs on the good ones are $1000.00 or so.  I make up my own 
Rowgowski type transformers, but they must be calibrated for the narrow 
frequency range they will be used in.  The modified units are special and 
have excellent bandpass and linearity over a fairly broad range.  (10hz to 
10Mhz).

  The type you might have been refering to are the power 60hz types.  These 
will not measure primary tank current,  but will measure your power 
transfomer currents to a limited degree.  The iron type CT s are not capable 
of following spikes beyond 400hz with good results and rely on fairly 
sinusoidial waveforms for accuracy.  The tesla power transformers rarely 
pull a pure sinusodial load off the line due to the spike like capacitor 
loading.

Richard Hull, TCBOR
 ----------
From: tesla
To: 73041.2215; 73663.1536; BrittB7556; JHERRON; JOHNBATES3; abourass; 
atech; av599; davide; funkadelic; jbiehler; jmonty; kg7bz; koppemha; logue; 
mackte; nwtnmike; osburnw; pinsky; richardh; rmessick; rnicker; rwstephens; 
shu95mmc; stevej; twill19; yiorgos
Subject: Re: Current XFMR
Date: Friday, March 29, 1996 2:03PM