High-Temperature Resistant Nomex Paper Insulated Wire - China Suppliers & Factory for Oil-Immersed Transformers
| Product | Wrapping Process | Number of Wraps | Insulation Thickness / mm | Breakdown Voltage ≥ |
|---|---|---|---|---|
| Nomex | 1.5–2mm self locking Lapping 1.5–2mm | 1 | 0.12 ± 0.05 | 600V |
| 1.5–2mm self locking Lapping 1.5–2mm | 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, and has full compatibility with all kinds of varnish, adhesive, transformer liquid, lubricant and coolant. Transformer with Nomex wrapped wire can bring clients significant economic, environmental and security benefits.
Even if the temperature reaches 220℃, the insulation property remains the same, ensuring long-term performance stability.
Temperature can rise up to 180℃ — fewer wires and ferrite cores result in smaller size, lighter weight, and reduced capital construction expense.
A smaller ferrite core means smaller no-load loss and easier transformer installation on-site.
Compatible with varnish, adhesive, transformer fluid, lubricant, and coolant — resists insects, mold, and fungal attack.
With Nomex wrapped wire, the electrical specification and mechanical properties are outstanding throughout the transformer's entire service life. Nomex wrapping magnet wire is not easy to age and has strong contraction and elasticity — ensuring transformer winding stays tight with no cracks. Nomex insulation paper is not sensitive to temperature or dust, significantly improving transformer reliability.
Nomex's high thermal resistance means insulation properties remain constant even at 220℃. Rank C (220℃) replaces Rank H (180℃) in transformer design — enabling it to handle unexpected load surges and expansions, while greatly reducing the need for backup planning.
NOMEX is chemically stable, safely flame retardant, and anti-radiation. Even in 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 — the waste can be degraded and will not cause environmental pollution. Nomex is an environmentally friendly high-tech product.