Ningbo Suntech Power Machinery Tools Co.,Ltd.
Ningbo Suntech Power Machinery Tools Co., Ltd. Professional Manufacturer and Exporter of Electric Power Field
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Three Sheaves Stringing Block Professional Cable Pulling Equipment For Power Grid Construction
Core Design Features
Operational Advantages
✔ 40% faster stringing speed compared to dual-sheave blocks
✔ 3-point contact system prevents conductor twisting during pulls
✔ Reduced fleet angle (<2°) minimizes conductor surface wear
✔ Quick-change sheave system (tool-free replacement in <5 minutes)
✔ Modular design allows adding grounding rollers as optional accessories
Safety Certifications
✓ IEEE 524-2020 compliant for conductor installation
✓ OSHA 1910.269 certified for live-line work
✓ EN 13414-1:2020 load testing certification
✓ Non-magnetic stainless steel hardware for substation environments
✓ Dual-locking swivel hook with 360° rotation capability
Maintenance Specifications
• Self-cleaning sheave grooves with UHMWPE liners (replaceable)
• Magnetic particle inspected load-bearing components
• Corrosion warranty: 5 years in coastal environments (C5-M class)
• RFID tracking tag embedded in frame for asset management
• 3D-printed spare parts program available
Typical Applications
➔ ±800kV UHV DC line construction
➔ Bundle conductor stringing (4x/6x/8x)
➔ Transposition tower section pulls
➔ Submarine cable landing operations
➔ High-altitude (>3000m) line projects
Optional Accessories
| Item Number | Model | Rated Load (kN) | Weight (kg) | Remark |
| 10226 | SH80S | 5 | 2.8 | Nylon sheave |