Re: 15kVA 12.6kV pole pig (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 16 Jun 2007 10:28:24 -0400
From: timjroche@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: 15kVA  12.6kV pole pig (fwd)


david,


   yes, i am sorry, it is Tim, thank you. according to the factory
nameplate, it is a 120/240 LV. FYI - HV has a 5 position switch for
incramental voltages from 12,600 down to 10,500 VAC.

-----Original Message-----
From: Tesla list <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Sent: Sat, 16 Jun 2007 6:40 am
Subject: Re: 15kVA 12.6kV pole pig (fwd)





--------- Forwarded message ----------
ate: Sat, 16 Jun 2007 14:08:31 +0000
rom: David Rieben <drieben@xxxxxxxxxxx>
o: Tesla list <tesla@xxxxxxxxxx>
c: drieben@xxxxxxxxxxx
ubject: Re: 15kVA  12.6kV pole pig (fwd)
Hi , is it Tim?
Are you sure that your newly aquired pole transformer isn't rated for 240/
80 on its low voltage terminals instead of 120/240 since you are getting
etter performance by center tapping the LV terminals?

avid Rieben
-------------- Original message -------------- 
rom: "Tesla list" <tesla@xxxxxxxxxx> 
> 
 ---------- Forwarded message ---------- 
 Date: Sat, 16 Jun 2007 01:57:34 -0400 
 From: timjroche@xxxxxxx 
 To: tesla@xxxxxxxxxx 
 Subject: 15kVA 12.6kV pole pig 
 
 i have recently went from two Westinghouse PT's (about 5kVA) to a 15kVA 
 pole XFR. Holy Squirrelly!! i am running SRSG 3600 RPM 4flying (.5" 
 tung.)/2 station (.5" german silver). 0.1 uf hipotronics 70kV RMS tank 
 cap. 
 
 my biggest issue, besides the obvious current limiting, is getting the gap 
 to quench. went to 8 pole flying and basically made a jacobs ladder around 
 the rotor. like no quench at all. so back to 4 flying. am i way off or is 
 this a impedance problem on the LV side of pole XFR? BTW - i get nothing 
 but 60 cycle hum or saturation using 220 VAC RMS across the LV windings. 
 yet if i hook up my 220 VAC RMS with one leg on the CT or hooking it up 
 like 110 VAC RMS, i get much better performance. for those interested, i 
 was using a 1256 variac as voltage control and a 1156D as phase ajustment. 
 Now i have put a 3-stack 60 amp inline current limit. i first put 220 
 across it and turned the wipers till i was pulling 40 amp. then put it in 
 series. it is still only a 3 to 4 foot streamer. with my PT's, i can get 2 
 -3 streamers 6 to 7 foot long. 
 
 Thoughts? 
 Suggestings? 
 Ideas? 
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