A Comprehensive Guide to Choosing Phenolic Paperboard for Electrical Insulation

Various models of Phenolic Paperboard PFCP and 3020 series for insulation

Phenolic paperboard is a vital thermosetting laminated insulating material created by impregnating insulating paper with phenolic resin under heat and pressure. Known for its mechanical strength and cost-efficiency, it is a staple in motors, transformers, and instrumentation.

Understanding the PFCP Series (IEC Standard)

The PFCP series is the mainstream choice complying with international IEC standards. Depending on your specific application, different sub-models offer unique advantages:

  • PFCP201 (NEMA X): Optimized for mechanical properties and suitable for hot punching.
  • PFCP202 (NEMA XX): Specifically designed for power-frequency high-voltage scenarios, offering superior electrical strength in oil.
  • PFCP207 (Cold-Punching Board): Features excellent low-temperature punching capabilities, though with lower electrical performance.

The 3020 Series: Versatile and Economical

Complying with domestic industry standards, the 3020 series is widely recognized for its economy and reliability in industrial fields.

  • 3020: High electrical performance and oil resistance, making it ideal for transformer oil environments.
  • 3021 & 3021B/C: 3021 balances mechanical strength with oil resistance. The B and C variants provide cost-effective solutions for less demanding applications.
  • 3022: Your primary choice for humid environments due to its enhanced moisture resistance.

Technical Standards and Specifications

All phenolic paperboard models supplied by RDS follow the GB/T 1303.6-2009 standard.

  • Temperature Index: Uniformly rated at 120°C.
  • Physical Consistency: Core indicators like density and flexural strength remain consistent across the range, allowing for predictable performance in diverse designs.

Summary: How to Select the Right Model?

Choosing the correct model is critical for equipment reliability:

  1. Mechanical Parts: Prioritize PFCP201 or PFCP207.
  2. High-Voltage/Oil Scenarios: Use 3020 or PFCP202.
  3. Humid Environments: Opt for 3022 or PFCP206.

Conclusion

As electrical equipment trends toward miniaturization, our phenolic paperboard formulas continue to evolve, offering improved flame retardancy and moisture resistance.

RDS is a professional manufacturer of electrical insulation materials. We provide a full range of phenolic paperboard models tailored to your specific industrial needs.

Contact RDS today for a quote or custom production requirements!