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What's the difference between partial discharge and stremers? 1

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SamBones

Electrical
Joined
Aug 5, 2006
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DZ
Hello


Can you please tell me what's the difference between partial discharge and stremers?

Thank you in advance.

Regards
SamBones
 
Partial discharge is what happens in gas (mostly air) pockets inside an insulation system. It produces ozone (O3) and the ozone breaks down insulation so you get insulation breakdown after a few years.

Streamers are precursors to flash-over in air (or along a surface). If you get streamers during PD test, you probably have sharp edges on bolts, wires, connectors etcetera.

Gunnar Englund
 
Thank you skogsgurra

Sam Bones

 
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