Brand: YILONG
Materials: Phenolic Resin + Kraft Paper
Process: Laminated
Color: Black
Wall thickness: 2-200mm
OD: 10-1200mm
Length: 1000mm
Packaging: Pallet, Wooden Box
Description
3520 phenolic resin paper-based laminated tube is created by insulating winding paper and phenolic resin, mostly suitable for insulating structural spares for motors and electrical equipments under dry condition and transformer oil.
We have tubes of below standards:
GOST Standard: 3520
IEC Standard: PFCP21, PFCP22, PFCP23
DIN: HP2065, HP2066, HP2067
NEMA Standard: X, XX, XXX
Features
High mechanical strength: excellent compressive and flexural resistance
Excellent electrical insulation
Good thermal stability, withstands high temperatures
Moderate chemical and oil resistance
Dimensional stability under varying conditions
Lightweight, easy to handle
Applications
Electrical insulation for transformers, motors, and generators
Bushings and insulating sleeves in electrical equipment
Structural supports and components in machinery and equipment
Insulating spacers and standoffs in electronic assemblies
Handles and grips for tools and equipment
Rollers and guides in conveyor systems
Technical Data Sheet
| No. | Item | Unit | Range | Phenolic Paper Lanimates | |||
| PFCP21 | PFCP22 | PFCP23 | 3520 | ||||
| X | XX | XXX | — | ||||
| HP2065 | HP2066 | HP2067 | — | ||||
| 1 | Flexural Strength (Perpendicular to Laminations) | MPa | ≥ | 100 | 100 | 100 | 90 |
| 2 | Compressive Strength (Axial) | MPa | ≥ | 100 | 80 | 100 | 60 |
| 3 | Shear Strength (Nominal Dia ≤100 mm) | MPa | ≥ | 70 | 70 | 70 | 15 |
| 4 | Electric Strength ⊥ (in oil at 90°C, wall thickness 1.6 mm) | kV/mm | ≥ | — | 11.6 | 7.8 | 8 |
| 5 | Breakdown Voltage Parallel to Laminations (in oil at 90°C) | kV | ≥ | 15 | 50 | 25 | 25 |
| 6 | Dissipation Factor (1 MHz) | — | ≤ | — | — | — | — |
| 7 | Dissipation Factor (48–62 Hz) | — | ≤ | — | — | — | 0.03 |
| 8 | Dielectric Constant (1 MHz) | — | ≥ | — | — | — | — |
| 9 | Insulation Resistance After Water Immersion (Nominal thickness ≥10 mm, nominal inner dia ≥8 mm) | MΩ | ≥ | 1 | 1 | 5 | 1 |
| 10 | Heat Resistance | ℃ | ≤ | 120 | 120 | 120 | 120 |
| 11 | Water Absorption | mg/cm² | ≤ | 10 | 10 | 5 | 8 |
| 12 | Density | g/cm³ | — | 1.3-1.4 | 1.3-1.4 | 1.3-1.4 | 1.3-1.4 |
| 13 | Flammability | Class | — | — | — | — | — |
| 14 | Standard | IEC 61212-3-1:2006 | GB | ||||
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