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Re: very long sparks
to: Bert
Could you enlighten the TC list with the ISBN number and publisher of this
book? Available in the USA from?
Dr. Resonance
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Thursday, January 06, 2000 12:17 AM
Subject: Re: very long sparks
>Original Poster: Bert Hickman <bert.hickman-at-aquila-dot-com>
>
>Tesla List wrote:
>>
>> Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net>
>>
>> to: Jim
>>
>> If this was an impulse test, question: Was the spark in free air or
across
>> a string of insulators? If across a string of insulators I have
stretched
>> 1,000,000 volts to over 23 feet, but that doesn't count as a free air
spark.
>> 1 MEV in free air at 250 KHZ with a break rate of 450 PPS at a power
level
>> of 7.5 KVA will stretch to approx 9 feet.
>>
>> Perhaps someone on the list that has a copy of the book could comment on
>> whether it was a 100 meter free air discharge or 100 meters creepage
>> flashover along an insulator string.
>>
>> Regards,
>>
>> Dr. Resonance
>>
><SNIP>
>
>Dr. Resonance and all,
>
>I can confirm that it is indeed a free-air negative discharge
>originating off the flat top of what appears to be a huge cylindrical
>impulse generator, and is shown on page 4 of Bazelyan and Raizer's
>"Spark Discharge". The picture and associated text indicates it's from
>(only!) a 5 MV pulse, done at the Siberian Institute for Power
>Engineering (complete with snow on the ground). It's arcing to a 110 kV
>transmission line about 100 meters away. A BIG, lightning-like
>discharge. GREAT book.
>
>-- Bert --
>
>
>
>