DL/T 802.2-2017 in English
VALIDTechnical requirements for electric cable conduits.Part 2:Cable conduits of fiberglass reinforced plastics
- Issued on:2017-08-02
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$271.00
| Standard No: | DL/T 802.2-2017 |
| Document status: | VALID |
| Title in English: | Technical requirements for electric cable conduits.Part 2:Cable conduits of fiberglass reinforced plastics |
| Title in Chinese: | 电力电缆用导管 第2部分：玻璃纤维增强塑料电缆导管 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-08-02 |
| Implemented on: | 2017-12-01 |
| ICS Classification: | 29.060.20-Cables |
| Chinese Classification: | K13-Cable and its accessory |
| Professional Classification: | DL-Electricity |
| Related Keywords: | key technical requirements
technical requirements standard revision technical elements electric cable conduits.part cable conduits |
Introduction
Core changes in the standard revision
| Technical elements | 2007 edition | 2017 edition | Description of changes |
|---|---|---|---|
| Reinforcement materials | No clear restrictions | Mandatory use of alkali-free glass fiber (alkali metal oxide ≤0.8%) | Prohibition of high/medium alkali glass fiber to improve corrosion resistance |
| Process type | Mechanical winding only | New BWFRP braided winding pultrusion process | Expanded production process diversity |
| Tensile strength | Not specified | ≥200MPa (≥170MPa after immersion in water) | New key mechanical indicators |
Analysis of key technical requirements
4.1 Raw material specifications
The resin matrix must be unsaturated polyester resin (in accordance with GB/T 8237), and the reinforcement material is strictly limited to alkali-free glass fiber roving, with an alkali metal oxide content of ≤0.8%. High/medium alkali fibers produced in clay crucibles are prohibited.
4.4 Performance Index System
• Ring stiffness ≥50MPa (GB/T 5352 test)
• No structural damage after drop hammer impact (10kg/2m)
• No leakage after 0.1MPa water pressure sealing of joints for 15 minutes
Implementation Suggestions
Key Points of Quality Control
1. Raw Material Traceability: Establish a testing report system for alkali metal oxide content of glass fiber suppliers
2. Process Verification: The new BWFRP process must pass special tests for ring stiffness (Appendix A) and joint sealing
3. Dimensional control: Wall thickness deviation shall be in accordance with Table 3, and the positive deviation limit of SN100 grade conduit is +1.4mm
Standard connection instructions
Key specifications used in conjunction with this standard include:
• DL/T 802.1-2017 General technical requirements
• GB/T 5352-2008 Test method for axial properties of fiber reinforced plastic thermosetting plastic pipes
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