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Voltage Rating of Kraft Transformer Insulating Paper vs Kraft Diamond Epoxy Paper

thread248-508077

Voltage Rating of Kraft Transformer Insulating Paper vs Kraft Diamond Epoxy Paper

Voltage Rating of Kraft Transformer Insulating Paper vs Kraft Diamond Epoxy Paper

(OP)
In terms of volts/mil, are these two equal in their voltage ratings. When oil soaked following a full vpi and when not soaked.

RE: Voltage Rating of Kraft Transformer Insulating Paper vs Kraft Diamond Epoxy Paper

I haven't heard of kraft diamond paper but I guess it's this
https://www.electro-wind.com/3-mil-0076-mm-thick-g...

Clicking specs at the bottom of that page, shows 50 kV/mm oil soaked for that product.

I don't think the phrase vacuum pressure impregnation (VPI) applies to any of this, but I gather you mean filling with oil under a vacuum.

RE: Voltage Rating of Kraft Transformer Insulating Paper vs Kraft Diamond Epoxy Paper

No difference in KV/mm between the two. BDV in oil is approximately 5-7 times more than in air.

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