Re: 15kVA 12.6kV pole pig (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 19 Jun 2007 16:04:47 -0400
From: timjroche@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: 15kVA  12.6kV pole pig (fwd)

thank you david


-----Original Message-----
From: Tesla list <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Sent: Tue, 19 Jun 2007 10:22 am
Subject: Re: 15kVA 12.6kV pole pig (fwd)




--------- Forwarded message ----------
ate: Tue, 19 Jun 2007 17:44:07 +0000
rom: David Rieben <drieben@xxxxxxxxxxx>
o: Tesla list <tesla@xxxxxxxxxx>
c: drieben@xxxxxxxxxxx
ubject: Re: 15kVA  12.6kV pole pig (fwd)
Hi Tim,
You can series two 1156 variacs and run them at 240 volts input
t the same 50 amps. 1256 variacs are just like 1156 units except
hat each 1256 variac is rated at 240 volts input instead of 120 volts
ike an 1156. From what I can tell by looking closely at these 1156/
256 series Powerstats  they are basically identical. They ap-
ear to be wound with 2 parallel coils of wire around the core. In
he 120 volt rated 1156, the 2 coils are paralleled and in a 1256, the
 coils are seriesed.
David Rieben
-------------- Original message -------------- 
rom: "Tesla list" <tesla@xxxxxxxxxx> 
> 
 ---------- Forwarded message ---------- 
 Date: Tue, 19 Jun 2007 04:59:26 -0400 
 From: timjroche@xxxxxxx 
 To: tesla@xxxxxxxxxx 
 Subject: Re: 15kVA 12.6kV pole pig (fwd) 
 
 
 
 I spent the past two days searching the archives (I'm sure I didn't 
 scratch the surface) and from what I gather to cut a core or not to is 
 based on availability to you of big variacs and like always personal 
 experience and personal design of TC. I acquired a 3 stack of variacs that 
 are 8" diameter and wound with 12 AWG. they were NOS, I took them out of 
 there original box. unfortunately the model # is so old that there is no 
 info on the web. the name plate is blank. I had 2 different electronic 
 stores try to cross ref with no results. so I am using them as a 
 adjustable ballast on the 15kVAÂ pole pig now instead of the original 
 setup I had which is a 1156D. there is a surplus store near me going out 
 of business and giving away 1156D variacs for $150. CHEAP. 1156D's are 
 rated 10kVA at 120 VAC. my question is, from my understanding, usually the 
 wire gage determines current. what makes a variac voltage limits? the 
 inductance? so that when mains voltage is put across it, it does not see 
 it as a short? is using two 1156Ds stacked for voltage control with 220 
 VAC RMS mains not a good idea? variacs are built to run at name plate 
 current but what about voltage? I have only one other experience with over 
 voltage of a variac. it was a small 120 VAC 3 Amp and when I put 220 
 across it, it would blow the breaker. but 1156D are one of the biggest on 
 market. anyone have any thoughts??? 
 
 
 -----Original Message----- 
 From: Tesla list 
 To: tesla@xxxxxxxxxx 
 Sent: Sat, 16 Jun 2007 8:37 am 
 Subject: Re: 15kVA 12.6kV pole pig (fwd) 
 
 
 


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