31.3 kV Breakdown Voltage and 198% MD Elongation from a Trusted PET Motor Insulation Film Supplier
Product Overview
As electric motors evolve toward higher voltages and heavier loads, the insulation film must keep pace. The 350um PET Motor Insulation Film is a heavy-gauge solution engineered for these demanding environments. It delivers a massive 31.3 kV breakdown voltage, ensuring safety in high-voltage systems, while its 198% MD elongation means it stretches rather than cracks under extreme winding tension. With a hazy surface for excellent anti-blocking and high stiffness for secure slot insertion, this is the grade that heavy-duty motor manufacturers rely on.
Technical Characteristics
The following values are typical data for the 350um specification. They are not intended as limiting specifications.
- Material: PET (Polyethylene Terephthalate)
- Thickness: 350 um
- Tensile Strength: MD 175 MPa / TD 173 MPa
- Elongation at Break: MD 198% / TD 167%
- Thermal Shrinkage at 150°C, 30min: MD 0.9% / TD 0.5%
- Breakdown Voltage: 31.3 kV
- Volume Resistivity at 20°C: 3E+17 Ω·cm
- Dissipation Factor at 20°C, 1kHz: 43
- UL746B: RTI Electrical 105°C, Mechanical 105°C
Key Properties
- 31.3 kV breakdown voltage for high-voltage motor designs
- 198% MD elongation for ultimate mechanical toughness
- Hazy surface for excellent handling and anti-blocking
- High stiffness ensures the film stays firmly in the motor slot
Applications
350um PET Motor Insulation Film is used for heavy-duty electrical insulation such as motor slot liners, wedges, and thick die-cut insulation parts. It is ideal for high-voltage motor manufacturing, EV traction motors, and demanding industrial machinery.
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a 350um PET Motor Insulation Film Supplier, Manufacturer, and Factory with factory-direct pricing, stable thickness control, and guaranteed dielectric performance. As a factory-backed supplier, we support custom slitting and sheet cutting, export-grade packing, and global shipping. If you are comparing PET Motor Insulation Film suppliers, request a sample and check our batch data against the spec sheet.
