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Specialty bushings type GSA-AA

GSA-AA is a resin impregnated indoor-outdoor wall bushing available for system voltages of 52 to 123 kV. Current ratings are available up to 4,000 A.
The GSA bushing can be installed at any angle from horizontal to vertical, and is equipped with a 2 kV test tap. Conductor arrangement can be either of draw lead or solid rod type.

Product scope

Voltage: 52 - 123 kV
Current: ≤ 4,000 A. Higher current ratings on request.
Technology: Resin impregnated paper (RIP) with silicone insulator

Why Hitachi ABB Power Grids?

  • The bushing is partial discharge free and has a very low dissipation factor, which results in a lifetime equal to that of the transformer
  • The insulator sheds are made from high temperature vulcanization (HTV) silicone for unsurpassed erosion resistance
  • A very comprehensive testing programme has been performed in addition to what is required by international standards

Get to know more

Catalogs and instructions  
Benefits of using the GSA bushing 1ZSE 2750-117
Technical guide 1ZSE 2750-112
Installation and maintenance guide 2750 515-133

General information, resin impregnated bushings  
Ordering data form (.doc format)
Please note that this is an interactive form, which can be filled in, saved and sent to us by e-mail.
1ZSC 2750-119
Bushing diagnosis and conditioning 2750 515-142
Different insulation systems in condenser bushings 2750 515-143
Electrical routine testing of high voltage bushings 2750 515-148
Resin impregnated paper bushings 2750 515-130
Seismic calculations on ABB bushings mounted on a transformer tank cover 2750 515-88
Temperature dependency for C1 and tan d for resin impregnated paper bushings 2750 515-134
Comparison between porcelain and silicone rubber for use as outdoor insulation on high voltage bushings 2750 515-136
Silicone rubber 2750 515-131

Pro/E models
Pro/E models (compressed zip file)

Dimension drawings        
Type designation Lightning impulse
Rated current
Bushing Drawing
GSA 52-AA/4000 250 4000 LF 130 052-CA 2751 362-BCA
GSA 73-AA/4000 350 4000 LF 130 073-CD 2751 362-BCD
GSA 123-AA/2000 550 2000 LF 130 123-BD 2751 362-DBD


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