Helical tension set
Helical strain clamp is used in bearing axial tension of conductor, and equipped with thimble connecting fittings and insulators etc, it could connect the conductor and ground wire on the strain pole and tower. It could replace bolt strain clamp, compression-type strain clamp and wedge shape strain clamp, It has simple structure, easy installation. It reduced the construction cost. At present, it widely used in aerial lines in domestic and abroad.
It has big grip and high safety performance. It used in electric line of steel strand wire, aluminum strand wire.steel-core aluminum strand wire and insulated conductor etc. The grip of helical strain clamp could reach to 100% strand wire calculated dragging force at break (CUTS) or above.
Helical strain clamp has characteristics of easy installation, simple construction, no special tool required, good consistency, only one person could finish the operation. It is very simple to ensure the installation quality,inspect with naked eyes on the spot.
The clamp has good corrosion resistance. The material is same with conductor, which could ensure the clamp has strong anti-electrochemical corrosion capacity.
The clamp adopts spiral design, which improve the anti-vibration capacity of conductor, distribute the stress uniformly, no damage for the conductor, prolong the service life of conductor.
Selection of Helical Tension Set for ACR Conductor
| Type | Standard DL/T
763-2001 Reference |
Available Dia.of
Conductor(mm) |
Suitable Conduct ACSR | Clamp
Length (mm) |
Color
Code |
Weight
(kg) |
Fitting |
| DN 1110 | NL-16/3 | 5.17-5.79 | 16/3 | 450 | Green | 0.12 | TC-05 |
| DN 1111 | NL-25/4 | 6.54-7.34 | 25/4 | 560 | Red | 0.12 | |
| DN 1112 | NL-35/6 | 7.35-8.26 | 35/6 | 630 | Yellow | 0.2 | |
| DN 1114 | NL-50/8 | 9.26-10.39 | 50/8 | 690 | Black | 0.25 | |
| DN 1115 | NL-70/10 | 10.40-11.68 | 70/10 | 750 | Blue | 0.42 | |
| NL-50/30 | 50/30 | ||||||
| DN 1117 | NL-70/40 | 13.12-14.66 | 70/40 | 890 | Green | 0.62 | TC-07 |
| NL-95/15 | 95/15 | ||||||
| NL-92/20 | 95/20 | ||||||
| NL-120/7 | 120/7 | ||||||
| DN 1118 | NL-120/20 | 14.67-16.59 | 120/20 | 900 | Red | 0.81 | TC-12 |
| NL-95/55 | 95/55 | ||||||
| NL-120/25 | 120/25 | ||||||
| NL-150/8 | 150/8 | ||||||
| DN 1119 | NL-150/20 | 16.60-18.77 | 150/20 | 1030 | Yellow | 1.13 | |
| NL-120/70 | 120/70 | ||||||
| NL-150/25 | 150/25 | ||||||
| NL-150/35 | 150/35 | ||||||
| NL-185/10 | 185/10 | ||||||
| DN 1120 | NL-185/25 | 18.78-21.26 | 185/25 | 1170 | Black | 1.8 | |
| NL-185/30 | 185/30 | ||||||
| NL-210/10 | 210/10 | ||||||
| NL-185/45 | 185/45 | ||||||
| NL-210/25 | 210/25 | ||||||
| NL-210/35 | 210/35 | ||||||
| NL-210/50 | 210/50 | ||||||
| DN 1121 | NL-240/30 | 21.27-24.05 | 240/30 | 1280 | Blue | 2.4 | TC-16 |
| NL-240/40 | 240/40 | ||||||
| NL-240/55 | 240/55 | ||||||
| NL-300/15 | 300/15 | ||||||
| NL-300/20 | 300/20 | ||||||
| DN 1122 | NL-300/25 | 300/25 | 1820 | Green | 3.9 | ||
| NL-300/40 | 300/40 | ||||||
| NL-300/50 | 300/50 | ||||||
| Remark: Not all products listed in the form, please contact our company if you have any requirement | |||||||
Selection of Helical Tension Set for Aluminum Stranded Conductor铝绞导线用预绞式耐张线夹选型表
| Type | Standard DL/T
763-2001 Reference |
Available Dia.of
Conductor(mm) |
Suitable Conduct ACSR | Clamp
Length (mm) |
Color
Code |
Weight
(kg) |
Fitting |
| DN 1113 | NL-50/LJ | 8.27-9.25 | 50 | 690 | Green | 0.26 | TC-05 |
| DN 1115 | NL-70/LJ | 10.40-11.68 | 70 | 750 | Blue | 0.4 | |
| DN 1116 | NL-95/LJ | 11.69-13.11 | 95 | 810 | Black | 0.4 | |
| DN 1117 | NL-120/LJ | 13.12-14.66 | 120 | 890 | Green | 0.6 | TC-07 |
| DN 1118 | NL-150/LJ | 14.67-16.59 | 150 | 900 | Red | 0.8 | TC-12 |
| DN 1119 | NL-185/LJ | 16.60-18.77 | 185 | 1030 | Yellow | 1.1 | |
| DN 1119 | NL-210/LJ | 16.60-18.77 | 210 | 1030 | Yellow | 1.1 | |
| DN 1120 | NL-240/LJ | 18.78-21.26 | 240 | 1170 | Black | 1.8 | |
| DN 1121 | NL-300/LJ | 21.27-24.05 | 300 | 1280 | Blue | 2.4 | TC-16 |
| DN 1122 | NL-400/LJ | 24.06-27.20 | 400 | 1820 | Green | 3.9 | |
| Remark: Not all products listed in the form, please contact our company if you have any requirement | |||||||
