On Jul 24, 2005, at 5:04 AM, R.Measures wrote:
> Winding the secondary closest to the core reduces the length of wire
> used, which secondary Cu loss. This is also done on the SB-220.
(correcton -- should say which =s less secondary Cu loss)
>
> On Jul 23, 2005, at 6:14 PM, Will Matney wrote:
>
>> Bill,
>>
>> It definately has a high-ohm short in the secondary. They've wound the
>> primary on the outside which I dont like to do. That way the
>> secondaries leaking to the core instead of the primary. If the primary
>> had been the first coil and it did that, it would blow a fuse most
>> likely. The best check to find it is use a megger or a hipot, and it
>> would make it show quickly.
>>
>> Best,
>>
>> Will
>>
>>
>> ----- Original Message -----
>> From: "Bill Smith" <ko4nrbs@yahoo.com>
>> To: amps@contesting.com
>> Subject: [Amps] Transformer core shorted to secondary winding??
>> Date: Sat, 23 Jul 2005 17:54:02 -0700 (PDT)
>>
>>>
>>> Transformer is a 3400vac CT
>>>
>>> All Secondary leads lifted and using a HV Probe (Fluke
>>> 80K-40)
>>>
>>> CT to chassis- 843 volts
>>> One side of secondary to chassis- 2450
>>> Other side of secondary to chassis- 863
>>>
>>> No continuity between secondary windings and the
>>> chassis when checked with an ohm meter.
>>>
>>> 73,
>>> Bill
>>>
>>>
>>>
>>> Bill Smith KO4NR
>>>
>>>
>>>
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>>
>>
>> --
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>
> Richard L. Measures, AG6K, 805.386.3734. www.somis.org
>
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>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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