TENSION CLAMPS(DEAD END CLAMPS)
About The Product
Tension clamps, also referred to as dead end clamps, are mechanical devices used in overhead electrical transmission and distribution systems to anchor conductors or cables at terminal points, pole ends, or tension sections. These clamps securely grip the conductor or ABC (Aerial Bundled Cable) and withstand the mechanical loads due to conductor tension, wind, or line sag.
Dead end clamps are critical for ensuring mechanical and electrical integrity of overhead lines, especially where the conductor ends or changes direction.
featueres
1. High Tensile Strength: Designed to withstand full line tension without slipping or damaging the conductor.
2. Corrosion Resistance: Made of hot-dip galvanized steel, aluminum alloy, or UV-resistant polymer materials.
3. Wide Compatibility: Available for bare conductors and insulated ABC cables.
4. Electrical Conductivity (for bare conductor types): Maintains electrical continuity in transmission lines.
5. Anti-slip Design: Grooved or shaped jaws prevent conductor slippage.
6. Compact and Lightweight: Easy to transport and handle on-site.
7. Weather Resistant: Withstands UV exposure, rain, snow, and other environmental conditions.
usage
1. Anchoring conductors or cables at the end of a span or section.
2. Terminating lines on poles or towers.
3. Corner/Angle Sections: Where lines change direction or require tension reinforcement.
4. Supporting insulated ABC systems in LV networks.
5. Providing mechanical support without damaging insulation (for ABC type).
size and range
standardization
1. IEC 61284 - Overhead lines – Requirements for fittings
2. EN 50483-4 - For tension clamps in ABC systems
3. ASTM A153 - Galvanized coatings on iron/steel products
4. IEEE C119.4 - Connectors for aluminum and copper conductors
5. IS 398 / IS 5561 - (India) Conductors and line hardware standards
6. NFC 33-042 / NFC 33-209 -French standards for LV ABC accessories
application
1. Anchoring conductors or cables at the end of a span or section.
2. Terminating lines on poles or towers.
3. Corner/Angle Sections: Where lines change direction or require tension reinforcement.
4. Supporting insulated ABC systems in LV networks.
5. Providing mechanical support without damaging insulation (for ABC type).
installation
a. Installation Steps (Bolted Type):
1. Position the conductor into the clamp groove.
2. Place the keeper (top part) and insert bolts.
3. Tighten bolts uniformly to specified torque.
4. Connect the clamp to the insulator string using appropriate hardware.
b. Installation Steps (Compression Type):
1. Insert conductor into the compression sleeve.
2. Use a hydraulic press with the right die to crimp as per manufacturer's sequence.
3. Markings on the clamp body guide correct crimping zones.
4. Finish with sealing and anti-corrosion application.
c. Installation for Preformed (Helical) Type:
1. Wrap the inner rods on the conductor per manufacturer's instructions.
2. Align and wrap outer rods or fittings.
3. Check alignment and secure dead end on pole or tower eye.