SESTFt

RIS Transformer outdoor bushings

SESTFt

RIS Transformer outdoor bushings

  • Not sensitive to humidity
  • Highly stable dielectric properties
  • Homogeneous material properties
  • Reduced ageing effect compared to paper
  • Optimized production process
  • Positive effect on service life
  • Lower weight of the bushing with composite insulator
  • No dangerous fragments if the housing is damaged
  • Flame-resistant properties

SESTFt is an oil-free transformer bushing with a solid active part made of resin-impregnated paper and a condenser control. The air side housing is a silicone composite material. This bushing with dry filling is designed for rated voltages of 24 to 550 kV and rated currents up to 6000 A.

Design

The insulating body of the RIS condenser bushing (RIP = Resin Impregnated Synthetic) is made of plastic web vacuum-impregnated with epoxy resin. During the winding process, conductive layers made of aluminum foil are inserted between the paper for grading the electric field. Thanks to their good conductivity, optimum voltage distribution is guaranteed even in case of rapid voltage changes.

All bushings are designed to comply with IEC Standard 60137 and tested accordingly. Bushings that comply with IEEE Standard or other national regulations are available on request.

Technical Data
Electric current

AC

Applications

Transformer outdoor bushing

Insulation

RIS

Housing

Silicone insulator

Standard

IEC

Voltage Levels

24 - 550 kV

The product shown depicts the standard versions. Modifications to this are possible and can be easily requested from us. We will be happy to advise you and find a suitable solution together with you.
  • Not sensitive to humidity
  • Highly stable dielectric properties
  • Homogeneous material properties
  • Reduced ageing effect compared to paper
  • Optimized production process
  • Positive effect on service life
  • Lower weight of the bushing with composite insulator
  • No dangerous fragments if the housing is damaged
  • Flame-resistant properties

SESTFt is an oil-free transformer bushing with a solid active part made of resin-impregnated paper and a condenser control. The air side housing is a silicone composite material. This bushing with dry filling is designed for rated voltages of 24 to 550 kV and rated currents up to 6000 A.

Design

The insulating body of the RIS condenser bushing (RIP = Resin Impregnated Synthetic) is made of plastic web vacuum-impregnated with epoxy resin. During the winding process, conductive layers made of aluminum foil are inserted between the paper for grading the electric field. Thanks to their good conductivity, optimum voltage distribution is guaranteed even in case of rapid voltage changes.

All bushings are designed to comply with IEC Standard 60137 and tested accordingly. Bushings that comply with IEEE Standard or other national regulations are available on request.

Technical Data
Electric current

AC

Applications

Transformer outdoor bushing

Insulation

RIS

Housing

Silicone insulator

Standard

IEC

Voltage Levels

24 - 550 kV

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We’ll advise you personally.

If you have several questions or would like detailed advice over the phone, give us a call:

+49 2241 2526-0

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