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Electrical materials

Distribution transformers

Oil-immersed or dry-type transformers that step 22 kV or 35 kV grid voltage down to 0.4 kV for factories, warehouses and buildings.

Category
Electrical materials
Standards
IEC 60076 · TCVN 6306-1:2015 · IEC 60076-11
Distribution transformers
Illustration

Overview

Oil-immersed transformers are common in outdoor substations for their cost and overload capacity; cast-resin dry-type units are used indoors, in basements and data centres because they contain no oil and reduce fire risk.

Rating follows the calculated load plus expansion allowance. Efficiency and no-load and load losses must meet current regulations; substations need fire protection, oil pits and adequate ventilation.

Uses

  • 01Plant and warehouse substations
  • 02Basement transformer rooms in towers
  • 03Data centres (dry-type)
  • 04Step-up substations for solar farms

Selection and acceptance checks

  • Check factory test reports and losses
  • Site tests before energising
  • Check oil pit, ventilation and substation fire protection

Reference standards

  • IEC 60076
  • TCVN 6306-1:2015
  • IEC 60076-11

For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.

Sectors and solutions

Sectors

FDI factories Energy Data centers High-rise buildings

World Steel services

MEP general contracting EPC contracting Warranty and maintenance

Keywords

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