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DDP Diamond Dotted Insulation Paper for Oil-Immersed Transformer¹

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Product Description DDP Diamond Dotted Insulation Paper For Oil-Immersed TransformerProduct DescriptionGBS Diamond Dotted Insulation Paper is one of the insulating materials, which is made of electrical kraft paper coated on one or both sides with modified B-stage heat curable epoxy resin in diamond-shaped form and then dried. It features higher electrical strength and mechanical property. And In the process of coil drying, the agglutinating and solidifying of DDP can bond the coil into a fixed unit.The diamond patterns of epoxy resin are of size 9.5mm x 9.5mm with 15.9mm center spacing.The advantage of partially coated insulation press paper lies in the internal strengthening of the coil from adhesion to the conductor, which provides passage for quick evacuation of air and moisture during the drying process. It also minimizes the risk of partial discharge, quick impregnation, and flow of oil through the channels. The bonding strength of the epoxy resin is sufficient to prevent displacement of winding layers due to short circuit forces. Features 1. Insulation class A (105 °C) according to IEC 6412. Width: 960mm or customization3. Thickness: 0.08mm,0.13mm,0.18mm,0.20mm,0.25mm or customization4. Electrical insulation paper,100% sulphate pulp5. High purity and mechanical strength6. Backed enamel coating: Epoxy resin, rhombic,one or both sides7. Good compatibility with liquid dielectic after the baked enamel coating has hardened.8. Care should be taken that the layers to be baked remain closely pressed against each other during baking9. It has been approved by UL (NO.: E310670) ,ROHS and REACH test.Productthickness0.08mm0.13mm0.18mm0.2mm0.25mmThickness & Tolerancemm0.080 ±0.0050.130 ±0.0070.180 ±0.0100.20.250 ±0.010±0.010Densityg/m20.85-1.1Moisture Content%4.0-8.0Water Extraction PH-6.5-8.5Ash Content%≤1.0Adhesive Thicknessμm6-12Oil Absorbency%≥20Contamination to Transformer Oil-No ContaminationBond StrengthNormalKPa≥650100oC±2oC≥400Tensile StrengthMDN/10mm≥60≥110≥160≥180≥230CD≥30≥50≥70≥80≥100ElongationMD%≥2.0CD≥4.0Tear StrengthMDMN≥450≥900≥1350≥1500≥2000CD≥500≥1000≥1500≥1700≥2300Breakdown VoltageIn the airKV≥0.8≥1.37≥2.00≥2.10≥2.25In the oil≥4.00≥7.00≥9.00≥9.80≥11.50Applications:1. Used in oil-immersed transformers for the insulation between coils and between layers of oil immersed power distribution transformers.2. It can also be used as a cable shielding isolation layer and an anti-corona material for high-voltage motors and electrical appliances.Company InformationGBSXiamen Guangboshi Optronics Co., Ltd has more than 15 years professional experience in adhesive tape field and we have four factories which are located in Shenzhen,Kunshan,Xiamen and Nanchang.Our main Products:Protective Films,Thermally Conductive Tape, Polyimide High-temp Tape, Polyester High-temp Tape, ESD Tape, High-temp ESD Tape, T eflon Tape, PTFE Coated Glass fabric tape,Glass Cloth Tape,PET Tape, Adhesive Transfer Tape, V HB tape,Double-sided Foam Tape,wafer dicing tape,etc.Mainly applied in Mobile phone, Computers, Electronic industry, LCD, DVD, FCB/PCB etc. We aim to satisfy the customer with high quality and good service. For years, we listen to customers'requirements and turn it into our impetus. Look forward to cooperate with you to create a bright future. If there is anything we can do for you,Pls don't hesitate to contact us.CertificationsOur Services1.Your inquiry related to our product will be replied within 12 hours. 2.OEM or ODM projects are highly welcome. 3.We can die cut or design the products according to your requirements. 4.Perfect after-sale service offered,please contact us if you got question. 5.Packing as your request and promptly delivery. Payment&Shipping FAQQ:WHY CHOOSE US? WHAT ARE OUR ADVANTAGES ?1.Professional adhesive tapes manufacturer for almost 10 years.2.A libaba assessed Gold Supplier3.OEM/ODM aVAILABLE4.Accept small MOQ5.Samples available and best service6.Good production capability and fast deliveryQ:What is your payment method?A:We prefer to T/T, 30% deposit and the balance 70% paid off before shipment.Q:What is the lead time?A:As usual, we will complete the delivery within 10 days after your order.Q:Can you make other sizes and packages for this product?A:Yes, we can make other sizes as your requirement, normally our quotation will contain the common package. If you need your own packages, you'd better advise your requirement ahead of time for an accurate quote. Q:Will you accept us to visit you?A:Warmly welcome, we can show you our company and hope for a long time corporation with you.Q:What certificates you have for your products?A:We have some patents and SGS certificates for our products.

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