High-Temperature Resistant Nomex Insulated Paper Wire from China Suppliers and Factory for Transformers
| Product | Wrapping Process | The number of wraps | Insulation Thickness / mm | Breakdown Voltage ≥ |
| Nomex | 1.5–2mm self locking Lapping | 1 | 0.12 ± 0.05 | 600V |
| 1.5–2mm self locking Lapping | 2 | 0.24 ± 0.05 | 1500V | |
| 50% lapping 50% | 1 | 0.22 ± 0.05 | 1200V | |
| 50% lapping 50% | 2 | 0.4 ± 0.05 | 1300V | |
| 1.5mm Reverse lapping | 3 | 0.33 ± 0.05 | 2500V |
NOMEX's electrical, chemical and mechanical properties are extremely high, and its elasticity, flexibility, anti-tearing, moisture resistance and wear resistance are very good. Moreover, it has acid and alkali corrosion resistance. It is not easily destroyed by insects, molds and fungi. It has compatibility with all kinds of varnish, adhesive, transformer liquid, lubricant and coolant. Even if the temperature reaches 220℃, the insulation property remains the same. Transformer with Nomex wrapped wire can bring clients a lot of economic, environmental and security benefits.
Lower cost, smaller size, lighter weight — The temperature of transformer with Nomex insulation can rise up to 180℃ because the transformer needs fewer wires and ferrite cores, resulting in smaller size and lighter weight. This reduces capital construction expenses and makes installation easier. Smaller ferrite core also means smaller no-load loss.
With Nomex wrapped wire, the electrical specification and mechanical property are outstanding throughout the transformer's entire service life. Nomex wrapping magnet wire resists aging and maintains strong contraction and elasticity, ensuring the transformer winding stays close with no cracks. Nomex insulation paper is not sensitive to temperature or dust, improving overall reliability.
Nomex's thermal resistance is high — even at 220℃, the insulation property remains unchanged. Rank C of 220℃ replaces Rank H of 180℃ in transformer design, enabling the system to handle urgent load situations and unexpected expansion, greatly reducing the need for backup planning.
NOMEX is chemically stable, safely flame retardant, and anti-radiation. Even in the event of a fire, it will not release toxic gases. It does not react with solvents and resists acid and alkali corrosion. After its service life, it is convenient to recycle — waste can be degraded without causing environmental pollution. Nomex is a truly environmentally friendly high-tech product.