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Long-Rod Suspension Porcelain Insulator (Solid Core)

Long-Rod Suspension Porcelain Insulator | Solid Core | Vuulcan
Long Rod Suspension Porcelain Insulator Solid Core
// Transmission Solutions

Long-Rod Suspension Porcelain Insulator

Advanced Solid Core design that is strictly puncture-proof. Offers superior reliability compared to cap-and-pin insulators by eliminating internal cement interfaces. Ideal for heavy pollution areas.

Mechanical Load 40kN - 70kN
Standard IEC 60383
Construction Solid Core (Puncture Proof)
Porosity Test 180 Mpa·h
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Zero Puncture Risk | High Mechanical Integrity

Solid Core Technology: Puncture Proof

The defining feature of the Long-Rod insulator is its solid core construction. Unlike cap-and-pin insulators, the distance between the metal fittings is less than the shortest distance through the insulation material. This makes the insulator strictly puncture-proof (Class B acc. to IEC 60383).

Advantages over Cap & Pin Strings

Long-rod insulators offer significant operational advantages:

  • Self-Cleaning: The aerodynamic profile allows wind and rain to clean the surface effectively.
  • No Radial Stress: Absence of cement between head and shed eliminates radial stress cracking.
  • Reduced Maintenance: Zero risk of internal puncture means simple visual inspection is sufficient.
Cat. No. Failing Load (kN) H (Height mm) D (Diameter mm) Creepage (mm) Coupling
150024043813586316L
150037042318055016L
150047039015050016B
150057044016065016B

* All units undergo 180 Mpa·h Porosity Test.
* Dry Lightning Impulse Withstand: 170kV - 213kV.

Detailed drawings (Fig 1, Fig 2, Fig 3) available in PDF.

Download PDF Drawings

FAQ: Long-Rod Insulators

What is the main advantage of Long-Rod vs Cap-and-Pin?
The main advantage is the "Puncture-Proof" characteristic. Because it is a solid core, electrical puncture cannot occur through the porcelain body, eliminating the risk of dropped lines due to internal insulation failure.
What does "180 Mpa·h Porosity Test" mean?
This is a rigorous quality test (as per IEC) where the porcelain is subjected to high pressure to ensure the material is completely dense and free of internal voids, guaranteeing long-term dielectric strength.
Are these suitable for polluted areas?
Yes. The open profile of long-rod insulators (like Cat. 15002 with 863mm creepage) provides excellent self-cleaning properties, making them highly effective in polluted environments.