Self-Bunded Transformer
TX Name for Web Self Bunded
ELECTRICAL CHARACTERISTIC
TRANSFORMER
RATED POWER Up to 8.8MVA
RATED VOLTAGE 33kV to 0.4kV
VECTOR GROUP Dyn11, YNyn0+d1, ZNyn11, ZN
COOLING ONAN, KNANN
INSULATION CLASS CLASS A, CLASS E
INSULATION LEVEL AS 60076.3-2017
DESIGN AND TEST STANDARD IEC/AS 60076
AS 2067
AS/NZS 3000
AS 2374.1.2-2003
BUND
BUND MATERIAL S235 STEEL
PROTECTIVE COATING C5H WATERPROOF
SELF-BUNDED VOLUME Up to 120%
OIL-WATER FILTER DrainEezy Bund Filter
DESIGN STANDARD AS 1940
SPILL ANGLE 26.5 degrees

Product Details

Exnovo’s Self-Bunded Transformer features an integrated bunding system with splash guards designed in accordance with AS 1940. The geometry is engineered to manage spill angles, directing oil back into the bund to prevent overflow and external contamination.

Compared to traditional on-site concrete bunds, this design reduces installation costs and simplifies deployment.

The unit is custom-built to allow bottom cable entry via conduit, eliminating penetrations and preserving containment integrity. The bund is fabricated from S235 steel, finished with anti-rust powder coating, and equipped with an integrated oil-water separator.

Advantages & Benefits
• Post-fixed anchor (chemset) or cast-in-place anchor bolts
  may be used, subject to civil & foundation design by others.
• Fixing accessories shall be provided by others.
• Concrete apron shall be a minimum of 100mm all round, from
  the extremities of the bund.
• Power coated paint standard colour is RAL 7033.
• Bund bottom base is elevated from ground.
• Crane lifting from transformer only.
• Crane lifting only.

Standard Equipment

• IEC Type C HV bushings
• Low voltage bushings (Porcelain, Busbar)
• Off load tap changer
• Pressure Relief Device
• Oil sampling valve
• Self-Bund with Oil/Water Filter
• Monitoring & Protection
• Earth bar and terminals
• Instrument Junction Box

Optional Accessories

• Winding temperature indicator
• HV & LV CTs
• Surge arresters
• Oil Level Indicator
• DGPT2 or DMCR
• MCCB or Fuse Switch
• Cable Ladder

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