HV OHTL Spacer Dampers

Spacer damper is used to suppress bundle conductor sub span oscillations that could cause damage to multi-conductor bundle systems & also control aeolian vibration as well as wake induced oscillation. The spacer damper is designed to maintain the original geometry of the bundle system against loads. It must also restore the bundle to normal posture after experiencing severe loads due to short-circuit currents, ice and wind. PTE has partnered with PFISTERER/IXOSIL Switzerland to manufacture spacer dampers in Jeddah, Saudi Arabia.


DESIGN FEATURES

  • Compact Design
  • IP-67 Degree of Protection.
  • Made of Stainless Steel, Fiber Glass & Brass.
  • Custom design cable glands and lugs sizes.
  • Underground & above ground installation designs.
  • Indoor & outdoor designs.
  • Removable disconnecting links for onsite testing.
  • Design Manufactured & Tested as per International Standards.

IEEE STD-575-1988

IEC 60529 for Ingress Protection.

IEC-60060-1-1989 for Insulation level.

IEC-60230 for Lighting impulse.

Short Circuit Withstand –IEC-62271-1

Sheath Voltage Limiter (SVL)

These special surge arresters are of relatively low continuous operating voltage.

The correct sheath voltage limiter (SVL) is dictated by the need to withstand the highest external transient voltages that can occur from, short circuit fault, switching surges and lightning, which generate damaging over-voltages.

The SVL used in PTE link boxes are manufactured by Insulect (AK Power) Australia, these zinc oxide SVLs are  capable of withstanding high current surges and have the capacity to absorb and dissipate this energy.

Key Features Sheath Voltage Limiters(SVLs)

These special surge arresters are of relatively low continuous operating voltage.

The correct sheath voltage limiter (SVL) is dictated by the need to withstand the highest external transient voltages that can occur from, short circuit fault, switching surges and lightning, which generate damaging over-voltages.

These ZnO (zinc oxide) SVLs are capable of withstanding high current surges and have the capacity to absorb and dissipate this energy.


SL.

NO.

Item

 Code

Single Line Diagram

Description

SVL Earthing Option

Gland Entry

Encluture

1.

 PTE-DE-1S


​ 1/1 Way-Single Phase Direct Earthing Without SVL ​​​ ​

Direct Earthing

1 in, 1 out

Stainless Steel, Brass & Fiber Glass

2.

PTE-ES-1S


​1/1 Way-Single Phase Direct Earthing With SVL

SVL Protection

1 in, 1 out

Stainless Steel, Brass & Fiber Glass

3.

PTE-DE-3S


​3/1 Way-Three Phase Direct Earthing Without SVL

Direct Earthing

3 in, 1 out

Stainless Steel, Brass & Fiber Glass

4.

TE-ES-3S


3/1 Way-Three Phase With 3 SVLs

SVL Protection

3 in, 1 out

Stainless Steel, Brass & Fiber Glass

5.

PTE-DE-6S


6/1 way-3 Phase Direct Earthing for joints-Without SVL (Coaxial Bonding Cable)

Direct Earthing

3 in, 1 out

Stainless Steel, Brass & Fiber Glass

6.

PTE-CES-6S


6/1 Way- 3 Phase Cross bonding for Joints with 3 SVLs (Coaxial Bonding Cable)

SVL Protection

3 in, 1 out

Stainless Steel, Brass & Fiber Glass

7.

PTE-CES-6S1


6/1 Way- 3 Phase Cross bonding for Joints with 3 SVLs (Single Core Bonding Cable)

SVL Protection

6 in, 1 out

Stainless Steel, Brass & Fiber Glass

8.

PTE-SES-6S


6/1 Way- 3 Phase Straight for Joints with 3 SVLs (Coaxial Bonding Cable)

SVL Protection

6 in, 1 out

Stainless Steel, Brass & Fiber Glass

9.

PTE-SES-6S1


6/1 Way- 3 Phase Straight for Joints with 3 SVLs (Single Core Bonding Cable)

SVL Protection

3 in, 1 out

Stainless Steel, Brass & Fiber Glass

10.

PTE-DE-1S


1/1 way-Single Phase Direct Earthing Without SVL

Direct Earthing

6 in, 1 out

Stainless Steel, Brass & Fiber Glass

11.

PTE-SESS-6S1


6/1 Way- 3 Phase Straight for Joints with 6 SVLs (Coaxial Bonding Cable)

SVL Protection

3 in, 1 out

Stainless Steel, Brass & Fiber Glass


A Stockbridge damper is used to protect mainly OHTL conductors from wind-induced vibrations. The most effective protection device was invented by George Stockbridge in 1924 in the form of an inertial energy absorber equipped with a stranded steel cable holding two weights. Despite many other damping devices that were invented during the last century, the Stockbridge type vibration damper is still the best technical & economical solution.