Three Sheaves Stringing Block Professional Cable Pulling Equipment For Power Grid Construction

Core Design Features​​

• ​​Triple-sheave configuration​​ with 120° angular spacing for optimal conductor alignment
• ​​Forged alloy steel frame​​ with zinc-nickel alloy coating (50μm thickness)
• ​​Sealed ball bearings​​ with automatic lubrication ports (IP66 rating)
• ​​Working Load Limit (WLL):​​ 8-32 tons (tested to 4:1 safety factor per ASME B30.26)
• ​​Conductor compatibility:​​ 12mm-60mm diameter (ACSR/AAAC/ACCC/TACSR)
• ​​Integrated anti-derailment guards​​ for all sheave grooves

​​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​

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​​Optional Accessories​​

• ​​Fiber-optic cable guide attachments​​
• ​​Real-time load monitoring system (BLE 5.0)​​
• ​​Arctic-grade lubricant kit (-50°C rated)​​
• ​​Explosion-proof version (ATEX Zone 1)​​

Suntech Power Group is one of the largest Procurement, Engineering & Contracting Group companies in China.Our group branch company and factory have already engaged

in the field of electric power more than 26 years.

1.Steel structure industry especially steel towers and related products which include power towers and substation structures, telecommunication towers and related products of telecom sites, street light poles and so on.

2.Transmission line stringing tools and equipments,undergroud cable pulling tools incuded Stringing Blocks,Hoisting Tackles,Cable Rollers,Conductor Gripper,Gasoline Powered Winch,Hydraulic Puller Tensioner,Gin Poles,Inspection Trolleys and other rated machines.

3.Power fittings,transmission insulators and wires and cables included Suspension insulator,glass insulator,porcelain insulator,aluminum conductor steel reinforced,all aluminum alloy conductor,aluminum clad steel strand, aerial bounded cable,power cable,holding clamp,pulling clamp with pulley,arch plates,connector pipes and rated fittings.

And our branch company Ningbo Suntech Power Machinery Tools Co.,Ltd. as a professional global supplier

who have been exporting more than 90 countries in the world, we have been trying to focus on the comprehensive solutions like provides all related products and engineering services as client's requirement, for example from engineering consultant, design services, drawing services, manufacturing, transportation, supervision and even installation construction & maintenance services.

Insisting on business philosophy of “To be honest, To get win-win” and service concept of pursuing maximizing customer value , makes it win great reputations from both telecommunication operators and electricity power operators,we are willing to develop and share sucess with you.