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2. Key Specifications
|
Specification Category |
Details |
|
Product Name |
Pre-Compress Pressed Board (Electrical Insulation Grade) |
|
Base Material |
Cellulose (Kraft) Paper, Aramid Paper, or Composite Materials |
|
Standard Thickness |
0.5mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm (Custom thicknesses available) |
|
Density |
1.1 - 1.3 g/cm³ (Adjustable based on application) |
|
Moisture Content |
≤ 6% (Standard), can be supplied with lower moisture for specific applications |
|
Dielectric Strength |
≥ 35 kV/mm (Typical, varies with thickness) |
|
Tensile Strength |
Machine Direction: ≥ 80 MPa; Cross Direction: ≥ 40 MPa |
|
Thermal Class |
Class B (130°C), Class F (155°C), Class H (180°C) available |
|
Compressibility |
Pre-compressed to minimize thickness variation under operating pressure |
|
Standard Sheet Size |
1000mm x 2000mm, 1250mm x 2500mm (Other sizes upon request) |
|
Surface Finish |
Smooth, Calendered (Can be treated with varnish or resin for enhanced properties) |
|
Certifications |
RoHS Compliant. Produced under ISO 9001:2015 quality management system. |
|
MOQ |
500 kg or 1 pallet (Mixed specifications allowed for trial orders) |
|
Lead Time |
20-30 days for standard specifications; 35-50 days for customized orders. |
|
Key Applications |
Layer insulation in power transformers and distribution transformers, slot liners and phase separators in electric motors and generators, insulation barriers in switchgear and busbars, and as a structural component in Composite Cable accessories. |
3. Why Choose Us
Precision Customization: We tailor our Pre-Compress Pressed Boards to your exact blueprints—custom thickness, density, sheet size, thermal class, and impregnation treatments to meet the specific demands of your transformer or motor design.
Guaranteed Supply Chain Stability: Our strategic partnerships with premier raw material producers ensure a steady, uninterrupted supply of high-quality cellulose and aramid materials, safeguarding your production schedules against market volatility.
Uncompromising Quality Control: From raw material inspection to final calendering and slitting, every batch undergoes rigorous testing for dielectric strength, thickness uniformity, and moisture content, ensuring performance you can trust in critical applications like Optical Fiber Cable splice box insulation or Phase Conductor supports.
Predictable & Efficient Logistics: Leveraging our extensive export expertise, we manage international shipping, documentation, and customs clearance seamlessly, providing reliable delivery windows that help you plan your production with confidence.
Global Trade Expertise: Over ten years of focused B2B export experience means we are fluent in international trade practices, documentation, and Incoterms, making cross-border procurement straightforward and transparent for our partners.
Technical Partnership Approach: Our support extends beyond the sale. Our team provides technical consultation during material selection and responsive after-sales service to ensure the product integrates perfectly into your manufacturing process, especially for complex assemblies like OPPC (Optical Phase Conductor) accessories.
4. Customer Case
Client: A medium-sized electric motor manufacturer in Central Europe.
Background & Challenge: The client was upgrading their line of industrial motors to achieve higher efficiency (IE4 class). A key hurdle was the consistent performance of slot liners under the high mechanical pressure of automated winding. Their previous insulation boards exhibited thickness variation and occasional delamination after varnish impregnation, leading to inconsistent slot fill and potential short-circuit risks.
Our Solution: We analyzed their winding process and varnish system. We proposed a customized 1.0mm thick, high-density aramid-based Pre-Compress Pressed Board with a specific thermal class (155°C) and a calibrated surface treatment to optimize varnish adhesion and flow. We supplied multiple sample batches for their prototype motor testing.
The Result: The new boards demonstrated exceptional dimensional stability. Post-impregnation thickness variation was reduced by over 70%, and the delamination issue was completely eliminated. This allowed for more precise automated winding, contributing to a measured 2% improvement in motor efficiency. Satisfied with the performance, the client has established us as their sole supplier for this component, placing quarterly orders for over 5 tons annually.
5. FAQ
Q1: How does "Pre-Compress" processing benefit my transformer manufacturing process?
A: The pre-compression process subjects the board to controlled pressure during manufacturing. This pre-stabilizes the material, significantly reducing subsequent thickness variation and shrinkage when the board is subjected to the clamping forces in a transformer core or during varnish treatment. This results in more predictable and consistent insulation gaps, improved heat transfer, and ultimately, a more reliable and longer-lasting transformer.
Q2: Can your boards be used in applications requiring very high-frequency performance, such as in some High-Speed Fiber communication equipment power supplies?
A: Yes, absolutely. While our standard boards excel in power frequency applications, we can produce variants using specialized low-loss dielectric materials (like certain aramid or composite blends) that maintain stable dielectric properties at higher frequencies. Please share your specific frequency range and loss tangent requirements, and our technical team can recommend a suitable material formulation.
Q3: What packaging options do you offer to ensure the boards arrive flat and undamaged?
A: We take great care in packaging to preserve the integrity of our pressed boards. Standard packaging involves interleaving sheets with protective paper, stacking them on a sturdy wooden pallet, tightly wrapping the stack in moisture-resistant plastic, and finally securing it with edge protectors and steel strapping. For ultra-sensitive or very large orders, we can provide reinforced crating. We tailor the packaging to the shipping method and destination to ensure your product arrives in perfect condition.
6. CTA
Looking for a reliable insulation component that brings stability and precision to your electrical manufacturing? Let's discuss how our Pre-Compress Pressed Board can meet the exact specifications of your next project. Contact our technical sales team for a detailed datasheet, free samples, or a competitive quotation tailored to your volume needs.
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