Class F N-Aramid APA (Florothem)
The quality of electrical insulation is a decisive factor for functional capability and service life of electric motors, generators and other electrical rotating equipments.
Three way insulation consists of a polyester film with Aramid paper glued on both sides with high temperature adhesives. This composite (Flexible) material has special importance insulating class F electrical machines. Aramid paper has outstanding thermal characteristics and extra ordinary resistance against chemicals and solvent.
The better electrical and mechanical properties of polyester sheet are ideally complemented by high temperature resistance of the Aramid paper. Two sided covering of the Polyester film with Aramid paper, protects these laminates against influences of hydrolysis, making these laminates an importance insulation component in manufacturing insulating class F electrical equipments.
- Advantages of FLOROTHERM ® (APA)
- Class F Laminates (155°C)
- High chemical and solvent resistance
- Suitable for automatic insertion
- Laminates have good dielectric strength
- Protects from influence of hydrolysis
- High temperature resistance
- Good mechanical properties
| Property | Clause in IEC 626-2 | Unit tolerance |
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| Laminate nominal thickness | 2 | mm | 0.14 | 0.15 | 0.17 | 0.19 | 0.22 | 0.24 | 0.31 | 0.37 | 0.47 |
| Laminate nominal tolerance | 2 | ̱̉ % | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 10 | 10 |
| Laminate nominal grammage | 3 | G/m2 + 12% | 140 | 150 | 170 | 200 | 230 | 270 | 360 | 450 | 590 |
| Film nominal thickness |
| um | 23 | 36 | 50 | 75 | 100 | 125 | 190 | 250 | 350 |
| Unfolded tensile strength | 4 | N/10 mm min MD
| 100 80 | 150 90
| 160 90 | 170 105 | 190 120 | 220 150 | 270 200 | 330 300 | 400 350 |
| Folded tensile strength | 4 | N/10 mm min MD
| 80 50 | 80 70 | 90 70 | 100 90 | 110 100 | 130 120 | 200 150 | 250 200 | 300 250 |
| Elongation unfolded | 4 | % min MD
| 15 20 | 15 20 | 15 20 | 15 20 | 15 20 | 20 25 | 20 25 | 20 25 | 20 25 |
| Electric breakdown voltage (6mm diameter electrode) | 9 | Kv min. Unfolded folded | 6 5 | 7 6 | 8 7 | 11 9 | 12 10 | 14 12 | 19 15 | 23 18 | 28 20 |
Shelf Life: FLOROTHERM® Flexible materials have practically unlimited period of shelf life if properly protected from dust, moisture and direct radiation of heat. It should be stored in dry place and recommended to be unpacked before it is to be used.
NOTES: The information given in the catalogue is based on general experience but no liability will be assumed or implied in connection with the use of these.
Exceptional Temperature and Flame ResistanceWith a Class F rating, this Aramid APA insulation withstands temperatures up to 155C, making it suitable for high-heat electrical applications. Its flame-retardant properties comply with strict IEC and ASTM standards, ensuring enhanced safety and reduced fire risk for critical installations.
Versatile Forms and CustomizationAvailable in sheets, rolls, or tapes, the product can be customized in length, width, and thickness, offering tailored solutions for various industry requirements. Its high flexibility and medium hardness allow for effortless handling and installation, even in complex environments.
Long-lasting Performance and DurabilityEngineered for longevity, Class F N Aramid APA features low moisture absorption and strong resistance to acids and alkalis. This guarantees durable insulation performance and stable storage over the long term, even in harsh operating or storage conditions, without degradation.
FAQs of Class F N Aramid APA Florothem:
Q: How is Class F N Aramid APA Florothem typically used in electrical insulation systems?
A: Class F N Aramid APA Florothem is primarily utilized as insulation in electric motors, transformers, and for cable wrapping. Its excellent thermal and dielectric properties make it ideal for protecting electrical components from heat and electrical failures.
Q: What benefits does Florothem technology provide in the processing of Aramid APA insulation products?
A: Florothem technology enhances the products thermal stability, mechanical strength, and chemical resistance. This advanced process ensures a smooth finish, promotes longevity, and maintains flexibility, making installation easier across various applications.
Q: When should you select a Class F insulation material like this for your electrical projects?
A: You should opt for Class F N Aramid APA insulation when your application demands operation at elevated temperatures, up to 155C, and where high dielectric strength and flame retardancy are critical for safety and performance longevity.
Q: Where is Class F N Aramid APA Florothem most commonly installed?
A: This insulation is commonly found in electric motor windings, transformer coils, and protective cable wrappingsespecially in environments exposed to high temperatures, chemical agents, or where safety standards require flame-retardant materials.
Q: What process should be followed for installing this product in electrical systems?
A: Installation involves selecting the appropriate form (sheet, roll, or tape), sizing it to fit the application, and ensuring smooth and tight placement around electrical components. Its high flexibility and smooth surface facilitate easy installation without the need for special tools.
Q: How does this products chemical resistance benefit long-term operations?
A: The strong resistance to acids and alkalis ensures that the insulation remains intact and effective in harsh industrial settings, reducing the risks of degradation, maintenance, and unplanned downtime over the systems lifecycle.
Q: What makes Class F N Aramid APA Florothem a preferred choice in challenging environments?
A: Its combination of high thermal stability, flame retardancy, low moisture absorption, and resistance to chemicals provides superior protection. The lightweight and customizable forms, along with long-term shelf stability, make it highly adaptable for diverse industrial needs.
