How to Interpret the Suffix “-FO” or “LWL” in VDE Cable Designations
Technical Analysis by Anhui Feichun Special Cable Co., Ltd.
Specialists in Mining, Port Machinery, and Heavy-Duty Industrial Cables
1. The Core Meaning of “-FO” and “LWL”
In the context of VDE (Verband der Elektrotechnik) cable standards, the suffixes “-FO” and “LWL” unequivocally refer to the inclusion of Fiber Optic elements within the cable structure.
在VDE（德国电气工程师协会）电缆标准中，后缀 “-FO” 和 “LWL” 明确表示电缆结构中包含光纤元件。
| Designation (型号标识) | Full Name (全称) | Origin Language (源语言) | Technical Definition (技术定义) |
|---|---|---|---|
| LWL | Lichtwellenleiter | German (德语) | Waveguide for light; specifically referencing DIN VDE 0888 standard for optical fiber transmission. |
| -FO | Fiber Optic | English (英语) | International designation often used in export models to indicate the same optical capability as LWL. |
2. Application in Hybrid Cables (Power + Data)
These suffixes rarely appear on standard optical cables (which start with ‘A-‘ or ‘J-‘). Instead, they are most critical when appended to Heavy-Duty Hybrid Cables. These cables combine high-voltage power conductors with sensitive fiber optic cores for data transmission in dynamic machinery.
这些后缀很少出现在标准光缆（通常以’A-‘或’J-‘开头）上。相反，它们主要用于重型混合电缆。这些电缆结合了高压动力导体和用于动态机械数据传输的敏感光纤芯。
Common Industry Examples (常见工业示例):
- Reeling Cables (卷盘电缆): Used in port cranes (STS/RTG) where the cable must carry power to the hoist while simultaneously transmitting camera/sensor data via the FO element.
- Mining Trailing Cables (矿用拖曳电缆): Used in tunnel boring machines (TBM) or shearers requiring real-time control data.
Technical Note: In a designated model like
(N)TSCGEWÖU-FO, the cable complies with VDE 0250 for the electrical components, while the integrated optical unit complies with VDE 0888.
技术说明： 在如 (N)TSCGEWÖU-FO 的型号中，电缆的电气部分符合 VDE 0250 标准，而集成的光纤单元则符合 VDE 0888 标准。3. Structural Comparison: Standard vs. Hybrid
| Feature (特性) | Standard Electrical Cable (普通电力电缆) | Hybrid Cable with -FO/LWL (光纤复合电缆) |
|---|---|---|
| Core Components | Copper conductors only (Phase + Earth). | Copper Phase/Earth + Optical Module (62.5/125µm or 9/125µm). |
| Dynamic Stress | Designed for tension and torsion. | Requires specialized strain relief (aramid yarn) to protect fragile glass fibers during reeling. |
| Electromagnetic Interference (EMI) | Susceptible to EMI if not shielded. | Immune to EMI. The -FO element allows interference-free data transfer right next to high-voltage power cores. |
4. Why Choose Anhui Feichun for Special FO Cables?
Anhui Feichun Special Cable Co., Ltd. specializes in engineering these complex hybrid cables. Integrating glass fiber into a heavy rubber mining cable requires precise manufacturing to prevent fiber breakage under extreme tension (tensile loads often exceeding 2000N).
安徽飞纯特种电缆有限公司专注于设计这些复杂的混合电缆。将玻璃光纤集成到重型橡胶矿用电缆中需要精密的制造工艺，以防止光纤在极端张力（拉伸载荷通常超过2000N）下断裂。
Our Capabilities (我们的能力):
- Manufacturing to DIN VDE 0250 (Power) and DIN VDE 0888 (Optical) standards.
- Custom hybrid designs for Ship-to-Shore (STS) Cranes and Underground Mining.
- Options for Single-mode (E9/125) and Multi-mode (G50/125, G62.5/125) fibers.
Contact Anhui Feichun Special Cable Co., Ltd.
Global Technical Support & Sales:
| WhatsApp: | +86 13855123218 |
| Technical Email: | [email protected] |
| Sales Email (Zihao Yang): | [email protected] |
| Sales Email (Ziyu Huang): | [email protected] |
Authoritative References: DIN VDE 0250 (Mining Cables), DIN VDE 0888 (Optical Cables).
