ENERGETICS

INSULATORS AND SUPPORTS

INSULATORS AND SUPPORTS

They are divided into support, tension and so-called pin and shekel insulators. Ceramic insulators have weather and heat resistance. They have a certain flexibility and are widely used in various types of voltage. They are made of high-quality ceramic mass C-130 with different physical and chemical properties. They can be exposed to the long-term effects of the electric field, mechanical loads and the effects of sunlight and winds. The insulators are designed for external mounting. According to its dimensions, shape, and electrical and mechanical properties, it corresponds to the IEC standards.

SILICONE INSULATORS

The application of polymer insulators is greater, and silicone rubber is usually widely used as polymer insulators. Therefore, the efficiency and reliability of these systems will directly depend on the performance of the silicone rubber. The high-temperature effects of polymer insulators depend on the type of application, and the technique we use is high-temperature vulcanization of silicone, better known as HTV rubber. HTV rubber as a finished product has excellent electrical properties such as: high electrical insulation, water resistance, moisture resistance, pollution resistance, anti-seismic characteristics, chemical resistance, good resistance to high voltage corona discharge and arc discharge. Also, silicone rubber film has better breathability than ordinary rubber and plastic wax, and resistance to cold and heat from -55 to 300°C

GLASS INSULATORS

They are used for insulator chains, they usually have a larger number of suspension insulators (insulator links), but they can consist of only one link. Insulators are not mechanically stressed for bending, but only for traction, so long chains (even several meters) can be used if desired, as required by the voltage of the transmission line. If one link is damaged or punctured, the other links will provide sufficient mechanical strength to the transmission line until the first repair opportunity.

INSULATOR SPINDLE

The insulators are fastened to the insulator supports. Based on their shape, they are divided into:
  • bent spindles
  • straight spindles
Bent supports are used for wooden or concrete poles, in the way that they are fixed directly into wood or concrete. The straight spindles are mounted on the crossarm of wooden or concrete columns and other steel structures.

INSULATOR CHAINS AND SUSPENSION ACCESSORIES

Depending on the type of poles for which the insulator chains are mounted, there are single insulator chains on a load-bearing or tension pole, double insulator chains on a load-bearing or tension pole, or four- fold insulator chains on a tension pole if the tension forces are high. Insulator chains consist of glass or porcelain or silicone insulators, upper and lower spark points, turnbuckles and connecting parts, clevises and extensions that are mounted according to the technical drawings for each pole

CABLES AND GUIDES

  • Aluminum-steel and copper ropes
  • Galvanized steel strip
  • Installation guides
  • LV, MV and HV cables
  • Submarine cables
  • Semi-insulated conductors
  • Self-supporting cable bundles

SURGE ARRESTERS

  • Metal oxide LV and MV surge arresters
  • Devices for atmospheric discharges
  • Spark gaps

AUTOMATIC REMOTE CONTROLLED SWITCHES

  • Reclosers
  • Disconnectors and disconnect switches
  • Vacuum switches

MEASURING INSTRUMENTS

  • Fault indicators for cable and overhead networks
  • Voltage indicators
  • Measuring transformers
  • Measuring and testing equipment

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