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dielectric oil test fixture




 
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June 27, 2022, 06:53:58 AM *
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Author Topic: dielectric oil test fixture  (Read 265 times)
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Opcom
Patrick J. / KD5OEI
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« on: June 07, 2022, 12:33:11 PM »

This nice fixture was had at a vintage radio swap meet. It is part of a dielectric oil tester. What is shown is the top panel/cover of an oil-filled HV transformer (no longer present). The tap switch controls the primary, and the secondary voltage appears through the insulators. It is presumed that the primary AC line voltage is regulated.

The cup is to be filled with oil, and the micrometer sets the immersed ball gap spacing precisely. The voltage is then increased in rough steps with the tap switch until the dielectric oil arcs through, at which point the power is turned off and the gap widened until it no longer arcs under test. This way, the withsanding voltage is known in volts per inch with 0.001" accuracy.


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Radio Candelstein - Flagship Station of the NRK Radio Network.
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Brrrr- it's cold in the shack! Fire up the BIG RIG


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« Reply #1 on: June 08, 2022, 11:58:17 AM »

Neat.

Wonder what the seals are?
Leather?
O rings?
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_-_- bear WB2GCR                   http://www.bearlabs.com
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« Reply #2 on: June 08, 2022, 04:11:20 PM »

All the coolest toys will someday end up at the "Bunker of Doom"

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