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AC bushings type GSBK

GSBK is a dry resin impregnated transformer bushing intended for immersed oil-SF6 or oil-oil service and is available for voltages from 170 to 550 kV. Maximum rated current is 2500 A depending on conductor type.
 
GSBK can be installed at any angle from horizontal to vertical and is equipped with a 2 kV test tap; 20 kV test tap available upon request. Conductor arrangement can be either of draw rod or fixed bottom contact type.

Product scope

Voltage: 170 - 550 kV
Current: ≤ 2,500 A
Technology: Resin impregnated paper (RIP)

Why Hitachi ABB Power Grids?

  • Our unique draw rod system facilitates easy field installation and removal without lowering the oil level
  • The bushing is free from partial discharges and has a very low dissipation factor, which results in a lifetime equal to that of the transformer
  • Excellent performance in seismic active areas
  • A very comprehensive testing programme has been performed in addition to what is required by international standards
  • Possible to use with alternative insulating fluids
  • Unique sealing system RIPCOAT drastically reduces the risk of moisture ingress during handling. Easier to keep the SF6 side free from dust

Get to know more

Catalogs and instructions  
Technical guide 1ZSC000563-AAA
Installation and maintenance guide 1ZSC000563-AAB

 

Document title ID
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)

Type designation Lightning impulse
(kV)
Rated current
(A)
Space for current transformer
(m)
Bushing Drawing
GSBK 170/0.3 750 1600
2500
0.3 1ZSC900170-AAA
1ZSC900170-ACA
2753 016-1
GSBK 170/0.6   1600
2500
0.6 1ZSC900170-AAB
1ZSC900170-ACB
2753 016-2
GSBK 245/0.3 1050 1600
2500
0.3 1ZSC900245-AAA
1ZSC900245-ACA
2753 016-3
GSBK 245/0.6   1600
2500
0.6 1ZSC900245-AAB
1ZSC900245-ACB
2753 016-4
GSBK 362/0.3 1300 1600
2500
0.3 1ZSC900362-AAA
1ZSC900362-ACA
2753 016-5
GSBK 362/0.6   1600
2500
0.6 1ZSC900362-AAB
1ZSC900362-ACB
2753 016-6
GSBK 420/0.3 1550 1600
2500
0.3 1ZSC900420-AAA
1ZSC900420-ACA
2753 016-7
GSBK 420/0.6   1600
2500
0.6 1ZSC900420-AAB
1ZSC900420-ACB
2753 016-8
GSBK 550/0.3 1675 1250
2500
0.3 1ZSC900550-AAA
1ZSC900550-ACA
2753 016-9
GSBK 550/0.6   1250
2500
0.6 1ZSC900550-AAB
1ZSC900550-ACB
2753 016-10
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