From: "Terrell W. Fritz"
Date: Wed, 11 Sep 2002 21:53:24 -0600
Subject: [TSSP] Top Voltage
Hi All,
I have gotten some round brass spheres for the top of the OLTC. The sit on a
0.375 inch diameter brass rod on top of the coil. A current sensor is
connected to the rods base.
http://hot-streamer.com/temp/PaulArc/020911/P9110013.jpg
http://hot-streamer.com/temp/PaulArc/020911/P9110012.jpg
I have three spheres. Their diameter is (inches):
#1 0.981
#2 1.354
#3 1.833
http://hot-streamer.com/temp/PaulArc/020911/P9110014.jpg
The secondary coil's specs are:
LsecDC = 0.487H
#28 wire
10.75 inches diameter
Base height = 3.5 inches
Winding length = 41 inches
Toroid center 50 inches
Toroid 23.5 diameter 6.5 inch cord
Height of ball center above toroid center
#1 13.5
#2 13.7
#3 13.95
Rod diameter 0.375
I pinged the coil with the toroid and without:
PK FREQ kHz (Error +/-) Q FACTOR (Error +/-) LEVEL
1 37.801 (0.01%,5Hz) 42.94 (0.41%, 0.2) -0.3dB
2 113.550 (0.01%,16Hz) 19.45 (0.83%, 0.2) -13.5dB
3 171.773 (0.01%,24Hz) 14.32 (3.32%, 0.5) -19.2dB
Accounted for 99.36% of input signal
PK FREQ kHz (Error +/-) Q FACTOR (Error +/-) LEVEL
1 52.203 (0.02%,8Hz) 27.72 (13.28%, 3.7) -0.2dB
2 125.605 (0.02%,19Hz) 15.29 (1.97%, 0.3) -12.4dB
3 179.477 (0.02%,28Hz) 13.18 (5.58%, 0.7) -17.1dB
4 228.129 (0.02%,35Hz) 13.20 (9.39%, 1.2) -21.1dB
5 275.953 (0.02%,43Hz) 13.83 (13.28%, 1.8) -25.2dB
Accounted for 98.00% of input signal
I tried a little first test tonight and got the following base current wave
forms:
http://hot-streamer.com/temp/PaulArc/020911/S1.gif
http://hot-streamer.com/temp/PaulArc/020911/S2.gif
http://hot-streamer.com/temp/PaulArc/020911/S3.gif
So I think it is ready to go.
Cheers,
Terry
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.