GB/T 29631-2025 in English
VALIDFlexible and torsion resistant cables of rated voltages up to and including 1.8/3 kV for wind turbine
- Issued on:2025-02-28
- Implemented on:2025-09-01
- File Format:PDF
- Delivery:Via email within 8 business days
$626.00
| Standard No: | GB/T 29631-2025 |
| Document status: | VALID |
| Title in English: | Flexible and torsion resistant cables of rated voltages up to and including 1.8/3 kV for wind turbine |
| Title in Chinese: | 额定电压1.8/3 kV及以下风力发电用耐扭曲软电缆 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 8 business days |
| Issued on: | 2025-02-28 |
| Implemented on: | 2025-09-01 |
| Superseding: |
GB/T 29631-2013 Flexible and torsion resistant cables of rated voltages up to and including 1.8/3 kV for wind turbine
|
| ICS Classification: | 29.060.20-Cables |
| Chinese Classification: | K13-Cable and its accessory |
| Professional Classification: | GB-National Standard |
| Related Keywords: | wind turbine introduction core changes
torsion test cycle wind power projects actual wind farm tower height high temperature performance test methods7 items9 |
| Related Topics: | wind power
the wind flexible cable |
《GB/T 29631-2025额定电压1.8/3 kV及以下风力发电用耐扭曲软电缆》由TC213（全国电线电缆标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Core changes in the standard revision
| Technical indicators | 2013 version | 2025 version | Description of changes |
|---|---|---|---|
| Operating temperature | Maximum 90℃ | New 105℃ grade | Adapt to higher power density fans |
| Ambient temperature | -25~60℃ | Expanded to -55~60℃ | Covering applications in extremely cold areas |
| Insulation material | EPR-90 | New EPR-105/G | Improved high temperature performance |
| Test methods | 7 items | 9 new items such as torsion/load | More stringent reliability verification |
Analysis of key performance parameters
Insulation system classification
EPR-105 mixture enables conductors to operate at 105℃ for a long time and withstand short circuits of 250℃ (5s), increasing the current carrying capacity by 16.7% compared to EPR-90.
Mechanical performance requirements
| Material type | Tensile strength (MPa) | Elongation at break (%) | Hot extension (200℃) |
|---|---|---|---|
| EPR-105 insulation | ≥6.5 | ≥200 | 175%/15% |
| TPU sheath | ≥20.0 | ≥300 | - |
Implementation suggestions
- Cold-resistant cable Pay attention to -55℃ low temperature impact test data when selecting
- 105℃ model is recommended for use with class=instrument>Metal braided shielding structure (P code)
- Offshore wind power projects should add salt spray test (Appendix G) and artificial aging test (Appendix F)
- The torsion test cycle needs to be adjusted according to the actual wind farm tower height, and it is recommended to be ≥10,000 times
Typical application comparison table
| Application scenario | Recommended model | Key features |
|---|---|---|
| Normal temperature on land | FDEH-25 | Chlorosulfonated polyethylene sheath, laid at -25℃ |
| High humidity at sea | ZC-FDEG-55 | Silicone rubber sheath + flame retardant Class C |
| Alpine Regions | FDES-55 | Thermoplastic Elastomer Sheath, -55℃ Operation |
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