Preformed Helical Vibration Damper for Line Protection
Qingdao Powtech Electronics Co., Ltd.- Name：Helical Vibration Damper
- Transport Package：Wooden Case
- Specification：CE, RoHS, SGS, ISO
- Trademark：Powtech
- Origin：China
Base Info
- Model NO.：FTL
- HS Code：39269090
- Production Capacity：100000PCS,Month
Description
Basic Info.
Model NO. FTL HS Code 39269090 Production Capacity 100000PCS/MonthProduct Description
Preformed Helical Vibration Damper for line protection
PVC spiral vibration damper is made of high-strength, antigenic and high-elasticity PVC plastic, easy to install
and operate. The shock absorber damper is an interference type damper to attenuate vibration amplitude by
impact with its damping section and especially designed for ADSS cable and OPGW cable of diameter less than 12mm.
| Product Model | Cable Diameter (mm) | Gripping Length L1 (mm) | Total Length L (mm) | Weight (Kg) |
| FTL-11 | 8.3~11.7 | 250 | 1300 | 0.28 |
| FTL-14 | 11.71~14.30 | 250 | 1350 | 0.30 |
| FTL-16 | 14.31~19.30 | 330 | 1670 | 0.66 |
Application Guide:
1. Select the Specification Model according to cable diameter.
2. Installed Spiral Vibration Damper may be several along the cable or at the same point. Gripping section is close to pole
or tower and the length from Damping Section to Inner Protection Rods end of Tension Set or Suspension Set is 12 cm.
3. The quantity of damper per span is confirmed according to cable stress and span length. The normal specification is followed:
| Span Length | Quantity |
| <100m | 0 |
| 100-250m | 2 |
| 250-400m | 4 |
| 400-800m | 6 |
