FAQ

How to plan for emergency recovery when a drone-assisted pull fails?+

For drone pull failures have backup ropes, tether/recovery kits and a trained retrieval crew. Establish abort procedures and practice drills pre-job.

Pre-plan recovery: include backup ropes, tether options, a grab/retrieval kit, and a trained retrieval crew. Define abort procedures, safe stand-down zones and a communications plan. Conduct practice drills during pre-job safety briefings.

What is the recommended reel/payout braking practice?+

Calibrate payout brakes to conductor type and speed; use CTCS and feed sheaves to avoid slack or surges. Test settings at setup.

Use controlled braking calibrated to the conductor type and payout speed to prevent slack and sudden surges. Combine braking with CTCS and feed sheaves to guide conductor. Test brake settings during setup and monitor during continuous payout.

What warranty and after-sales support do you provide?+

We offer standard and extended warranties, global spare shipments, on-site service and preventive maintenance contracts to reduce downtime.

Standard warranty covers manufacturing defects; extended warranty options available. We provide worldwide spare parts shipments, technical support, and reconditioning services. On-site service and preventive maintenance contracts are available to minimize downtime.

Is helicopter-assisted stringing still used and when is it better than drones?+

Helicopters are used for heavy payloads and long spans; drones are best for light pilot-line tasks. Select by payload, span and regulatory constraints.

Yes — helicopters lift heavy pilot lines and equipment for very long spans or large-scale projects where heavier payloads and wind tolerance are needed. Drones are best for light pilot-line work and in locations where helicopter use is not viable or too expensive. Choose per payload and regulatory constraints.

How to choose a cable-locating/route planning tool for underground pulls?+

Pick route tools with bend counts, duct surveys and GIS integration. Use pulling calculators that include bends, ducts and lubricant for tension estimates.

Choose tools offering accurate mapping, conduit condition surveys and bend-count calculators; integrate with GIS for project planning. Use vendor pulling calculators that account for duct type, bends and lubricant to estimate tension and staging needs.

What are common failure modes in stringing machines and prevention tips?+

Failures include worn sheaves, hydraulic leaks and bad tension control. Prevent with inspections, scheduled maintenance and spare parts on hand.

Common failures: worn sheaves/bearings, hydraulic leaks, rope slippage, and bad tension control. Prevent with routine inspections, scheduled oil/ filter changes, correct sheave sizing, and calibrating dynamometers. Keep spares for critical wear parts.

How to manage thermal expansion and sag with HTLS conductors?+

HTLS needs higher tension capacity and sag tables for operating temps. Use correct dead-ends, dampers and supplier guidance to manage expansion.

HTLS conductors have higher operating temps; design sag tables for operating temperature extremes and select tensioners that handle higher tensions. Use expansion allowances in dead-ends and fit vibration dampers where needed. Follow conductor supplier installation guidance.

How do I choose ropes: synthetic vs wire rope for bullwheels?+

Synthetic ropes are lighter and safer to handle; wire ropes are durable. Choose rope type per bullwheel design and manufacturer recommendations.

Synthetic rope offers lighter weight, easier handling and lower stored energy on failure; wire rope is durable but heavier. Choose per environment, manufacturer recommendations and bullwheel design—ensure the rope type matches the machine’s groove and grip system.

How to perform pre-job safety checks for a stringing operation?+

Pre-job checks: inspect gear/load ratings, verify payout brakes, test radios, confirm grounding and do a JHA. Document findings and PPE checks.

Verify equipment load ratings, inspect sheaves/blocks, confirm reel and payout brake operation, test radios/communications, confirm grounding/earthing plan, and do a job-hazard analysis (JHA) with crews before work. Document results and ensure PPE and rescue plans are in place.

What is the best configuration for multi-phase bundle stringing?+

For bundles use simultaneous stringing, matched conductor lengths, synchronized payout and controlled tensioning to ensure consistent sag.

Use simultaneous bundle stringing methods, matched-length subconductors, and matched tension across subconductors to avoid differential sag. Multi-roller fairleads, synchronized payout and controlled tensioning systems are required for consistent results. Follow bundle manufacturer instructions.

What are the hazards with using drones near power lines and how to mitigate them?+

Drone hazards: RF interference, wind, collision risk. Use certified pilots, safety corridors and emergency retrieval plans for pilot-line missions.

Drones near powerlines face RF interference, wind gusts, and collision risk. Mitigate with certified pilots, safety corridors, tethering/backup, and maintain safe distances unless specifically operating as a pilot-line mission with approved procedures and safeguards. Have an emergency retrieval plan.

How should I plan logistics for remote stringing projects?+

For remote projects plan heavy transport, staging, local labor, spares, permits and weather windows. Use modular, transport-friendly equipment.

Plan transport for heavy equipment (road/sea permits), staging areas, local labor, spare parts, and on-site commissioning. Factor in weather windows, helicopter or drone permits, and contingency for component delays. Use modular equipment that’s easy to transport and assemble in the field.

What cable types need special sheaves or rollers?+

HTLS/ACCC/OPGW/ADSS benefit from specialized sheaves and multi-roller fairleads to prevent deformation or fiber damage.

HTLS/ACCC, ADSS, and fiber-optic OPGW require particular groove profiles, larger diameters, and non-damaging roller surfaces to prevent strand deformation or fiber crush. Use manufacturer-recommended sheaves and multi-roller fairleads for special conductors.

What training is needed for drone-assisted stringing?+

Drone pilots need local UAV certification plus utility-specific stringing training; ground crews must learn rope handling and emergency recovery.

Drone pilots must hold required local certifications (e.g., FAA Part 107 in US) and receive utility-specific training on operations near energized lines, rope-handling procedures, emergency recovery and crew coordination. Ground crews must train on drone safety zones and rope secures.

How do I measure sag accurately during stringing?+

Measure sag with laser tools, sag-meters or DGPS under set tensions and reference temperatures. Verify final sag after stabilization.

Use laser range tools, precision sag-meters, or differential GPS and measure under set conductor tensions and temperatures. Apply conductor-specific sag tables and measure at reference temperatures. For highest accuracy, perform final sag checks after tension set and temperature stabilization.

What are recommended practices for pulling OPGW and fiber over long spans?+

Pull OPGW with dedicated grips and controlled tension; respect tensile and bend-radius limits, and use fiber-compatible sheaves and staged pulls if needed.

Use dedicated OPGW grips, controlled tensioning, and intermediate support where needed. Avoid exceeding manufacturer tensile and bend-radius limits, and use fiber-compatible rollers and sheaves; document fiber installation test results. Consider staged pulls for very long spans.

How to reduce conductor damage during payout and stringing?+

Prevent damage with correct sheaves/ fairleads, CTCS, controlled payout braking and following conductor installation guidelines.

Use correct sheave sizes, CTCS (constant tension), proper payout-stand braking, smooth fairleads, and avoid abrupt accelerations. Ensure sheaves are clean and matches groove profile; use conductor-protecting grips and follow the conductor manufacturer’s installation guidelines.

What approvals or certifications should I request for exported equipment?+

Request CE/ISO, factory test reports, FAT documentation and RoHS/EMC where needed. Third-party inspections are supported.

Request CE and ISO certificates, factory test reports (load tests), material certificates, and FAT documentation. For electrical/electronic controls confirm RoHS/EMC compliance if required. We support third-party inspection and will include certificate packages per customer needs.

How do environmental conditions affect stringing equipment selection?+

Altitude, heat, cold, wind and coastal corrosion affect equipment choice. Choose coatings, seals and hydraulics rated for the project environment.

High altitude, extreme heat, cold or corrosive coastal conditions require specific cooling, materials and seals. Wind and icing impact drone use and helicopter operations. Select units with appropriate material coatings, hydraulic ratings and temperature-tolerant components for reliable performance.

What information should I include in an RFQ for tensioning equipment?+

For accurate RFQs include conductor datasheet, longest span, target tension, climate, remote features, usage and delivery port.

Provide conductor type and datasheet, longest span, typical span lengths, required stringing tension, project altitude/climate, desired remote-control features, and estimated annual usage. Include delivery port and required certifications so we can give an accurate quote.

1 < ... 111213 14 15 ... > 186

Get the latest price? We'll respond as soon as possible(within 12 hours)