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Flexible Sheet
Grade 3 Diamond Dotted Kraft Presspaper
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10 Mil (0.25 mm thick) Grade 3 Diamond Dotted Kraft Press-Paper Flexible Laminate 105°C, blue, 48" wide roll
Part: KRAFTGR3DDP.WEID.010
Manufacturer: Weidmann Electrical Tech. Inc.
Diamond Dotted Presspaper improves the mechanical strength of oil-filled transformer windings without reducing partial discharge levels. WEIDMANN manufactures this paper by applying discrete dots of B-stage resin on both sides in a diamond pattern. The size and shape of the dots are carefully chosen to avoid interfering with vacuum drying and oil impregnation.
During B-stage, the resin dots are dry and tack-free, permitting storage and handling similar to normal presspaper. When the winding is heated for drying purposes, the adhesive dots melt and cure, thus creating permanent bonding sites unaffected by further heating cycles that may occur in service. The bonding strength is adequate to support effective gluing in unsupported coil design.
The pinhole-free multi-ply paper allows single layer application in LV foil windings. Temperature rise time in the drying oven is important, particularly during the final transition to the temperature at which the resin starts to melt. To obtain maximum bond strength, this transition should be completed as swiftly as possible. The drying requirements of the transformer normally provide for adequate curing of the resin. Nevertheless, WEIDMANN recommends careful monitoring of oven performance.
Electrowind Converting Solutions can custom slit-to-width, die cut and punch press custom parts, and sheet Kraft paper to your specification, along with other customized solutions. Request your quote for custom parts today!
- improves mechanical strength of oil-filled transformer windings without reducing partial discharge levels
- allows single layer application in LV foil windings
| Size-Thickness | .010" (10 mil) |
|---|---|
| Product Type | Grade 3 Diamond Dotted Kraft Presspaper |
| Colour | Blue |
| Temperature Class | Class A-105°C |
| Material | Kraft with B-Stage Resin Dots |
| Apparent Density | 1.0 g/cm3 |
| Moisture Content | <8% |
| Bond Strength | 54 N/cm2 |
| Electric Strength in Oil >0.2mm | 55 kV/mm |
- oil-filled transformers
WEIDMANN is the global leader in electrical insulation for transformer manufacturers and transformer users. Our core competence is the development and production of tailor-made solutions for high-temperature applications and cellulose based insulation systems.
Electrowind is a supplier partner of Weidmann. If you don't see the specific Weidmann product you are looking for on our website, request your quote from Electrowind today.
- Packaging Description: 48" width roll
- Product Weight: 350.00 LB
- Product Size: 14.00 x 48.00 x 14.00
Shipping Details
This item is oversized. Oversized items are not eligible for free shipping.
This product is oversized and/or not available for shipping via courier. Please contact Electrowind for shipping rates or we will contact you if shipping rates aren’t available for this product and you place an order for this product on our website.
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If you are not fully satisfied with your order (15) days after you receive it, you can return it for a full refund. Some conditions apply.
Full Refund Conditions
- item is not as described or represented.
- The item does not work.
- The item was damaged during shipping.
- We failed to meet our quoted lead time.
*Item must be returned in reasonably sound, unopened, unaltered and resalable condition.
*Item must be returned with original packaging.
*Special order or custom-made items do not apply.
Conditional Refund Conditions
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*10% restocking fee will apply.
*Special order or custom-made items do not apply.
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Call us at 519.836.2280 or email ontario@electro-wind.com to submit your return request and we will work with you to process your request fast and painless!
To request a return, you must contact us within 15 days of receiving your goods at your facility.
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