FXL Lacquer Wire and FXLP Aircraft Shielded Lacquer Wire are special cables specially designed for aviation field, suitable for wiring of low-voltage power system inside aircraft.
Scope of application
FXL Lacquer Wire and FXLP Aircraft Shielded Lacquer Wire are mainly used for low-voltage line connection on aircraft with AC rated voltage not exceeding 250V.
Usage characteristics
The long-term allowable operating temperature of the conductive wire core should not exceed 60℃.
FXL type wire has rubber insulation, with cotton yarn braided on the outside and coated with lacquer.
FXLP type wire adds tinned copper wire braid as shielding layer on the basis of FXL to provide better electromagnetic interference (EMI) protection.
Technical performance
The cotton yarn braid is tightly wrapped on the wire insulation layer, and the braiding density is not less than 90%.
The diameter range of tinned copper wire is 0.12~0.3mm, and the shielding braiding density is not less than 80%, which helps to improve the anti-interference ability.
The lacquer coating is flexible and resistant to flame, cold, heat, moisture, and the effects of a mixture of mineral oil and gasoline.
Special requirements
There are certain regulations on the delivery length. For example, for some types of small-section wires, the shortest acceptable delivery is 10 meters or even shorter, but the number of these short segments should not exceed 10% of the total delivery.
Manufacturers
These wires are produced by professional special cable manufacturers, such as TST CABLES and other companies.
Implementation standards
Different manufacturers may follow different corporate standards or industry standards to ensure that product quality meets the requirements of the aviation field.
Models and specifications
A variety of nominal cross-sectional areas are available, ranging from 0.5 mm² to 95 mm². Specific specifications such as conductor structure, insulation thickness, maximum outer diameter, etc. will vary depending on the cross-sectional area. Products of different lengths can be selected as needed. Usually there is a standard manufacturing length, but TST CABLES also supports customized lengths on demand.
Models and specifications
Model and specification table of wires
- Table 1 Models and names of cables
| model | Name |
| FXL | Low voltage lacquer wire for aircraft |
| FXLP | Low voltage shielded lacquer wire for aircraft |
2. The specifications of the wires should comply with the requirements of Table 2. Table 2 Cable specifications
| Serial number | 2. Specifications Nominal cross-sectional area (mm) | Structure Number of roots/single root diameter (mm) | Insulation thickness（mm） | Maximum outer diameter of wire（mm） | 20℃ Conductor ResistanceΩ/km (No more than) | Reference weight max. kg/km | ||
| FXL | FXLP | FXL | FXLP | |||||
| 1 | 0.5 | 16/0.2 | 0.6 | 3.2 | 4.3 | 37.9 | 13.3 | 30.7 |
| 2 | 0.75 | 19/0.23 | 0.6 | 3.5 | 4.95 | 24.20 | 19.0 | 33.2 |
| 3 | 1.0 | 19/0.26 | 0.6 | 3.6 | 5.06 | 18.50 | 22.4 | 37.4 |
| 4 | 1.5 | 19/0.32 | 0.6 | 4.0 | 5.5 | 12.21 | 28.7 | 45.2 |
| 5 | 2.5 | 19/0.41 | 0.6 | 4.7 | 6.05 | 7.44 | 40.3 | 58.5 |
| 6 | 4.0 | 49/0.32 | 0.6 | 5.7 | 6.6 | 4.73 | 58.9 | 80.7 |
| 7 | 6.0 | 49/0.39 | 0.6 | 8.7 | 7.37 | 3.19 | 80.5 | 104.6 |
| 8 | 10 | 49/0.52 | 0.8 | 8.4 | 9.9 | 1.79 | 140.6 | 182.4 |
| 9 | 16 | 84/0.49 | 0.8 | 9.4 | 11.44 | 1.18 | 203.4 | 253.0 |
| 10 | 25 | 133/0.49 | 1.0 | 11.0 | 13.2 | 0.760 | 305.4 | 364.0 |
| 11 | 35 | 133/0.58 | 1.2 | 13.9 | 16.61 | 0.531 | 421.5 | 510.8 |
| 12 | 50 | 133/0.68 | 1.4 | 16.3 | 19.25 | 0.386 | 553.6 | 656.9 |
| 13 | 70 | 189/0.68 | 1.4 | 17.8 | 20.9 | 0.272 | 788.8 | 909.0 |
| 14 | 95 | 259/0.68 | 1.6 | 21.4 | 23.54 | 0.198 | 1051.0 | 1186.4 |
3. Main technical performance
1. FXL type wires should have cotton yarn braiding and wax coating outside the rubber insulation.
2. FXLP type wires should use tinned copper wire braiding as a shielding layer outside the cotton yarn braided wax coating layer.
3. The cotton yarn braiding should be tightly wrapped on the wire insulation layer, and the braiding density should be not less than 90%. The diameter of the tinned copper wire is 0.12~0.3mm, and the braiding density of the tinned copper wire shielding should be not less than 80%.
4. The wax layer of the wire should be elastic and have the properties of flame retardancy, cold resistance, heat resistance, moisture resistance and resistance to mineral oil and gasoline mixture.
4. Delivery length
1. The manufacturing length of the wire should comply with the provisions of Table 4. Short wire segments are allowed to be delivered, but their number should not exceed 10% of the total delivery length. Table 4 Manufacturing length
| model | 2 Nominal cross section（mm） | Wire length（m） | The length of the short line segment is not less than（m） |
| FXL | 0.5～1.5 | 45～250 | 15 |
| 2.5～6.0 | 35～150 | 15 | |
| 10～95 | 25～100 | 10 | |
| FXLP | 0.5～1.5 | 25～150 | 10 |
| 2.5～6.0 | 15～100 | 7 | |
| 10～95 | 10～50 | 5 |
FXL and FXLP cables are specially designed for aerospace applications. They not only meet the electrical performance requirements, but also take into account the special working conditions of aircraft, such as temperature changes, humidity, chemical exposure, etc. If you are looking for such products, it is recommended to contact TST CABLES professional suppliers directly to obtain the latest technical information and quotation information.
