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  • Guindy, Chennai - 600 032, India
  • Plot No: 1&2, The Lords 4th Floor, Jawaharlal Nehru Road
  • +91-44-40193333
  • Email

4A Design & Engineering Pvt Ltd is the State of the Art of Design Engineering Centre setup at Chennai, India. 4A Design has a team of 100+ Engineers and CAD Engineers, with experience in Engineering Design, Detailing and Optimum Design headed by Dr Natarajan, who has 25 years of experience in design/detail engineering.

4A Design is ISO 9001-2008 certified by Bureau Veritas, focused on Substation Designs, Testing & Commissioning and Transmission Line Designs.

Substation Services

4A Design's engineers have comprehensive knowledge on international codes and vast design engineering experience. Our company provide substation Services like tendering encompassing preparation of tender drawings after collection of details and estimations of tendering bill of materials.

Our company's expertise on detail engineering designs extends to multiple disciplines like electrical and civil engineering with tremendous calculation capabilities using all the latest tools (software).

Testing & Commissioning Services

4A Design has a dedicated team which is competent to execute various types of Testing & Commissioning Projects, complying all stringent work specification and time schedules. Our team undergoes specialized training programs periodically, to acquire wide ranging skills and expertise with recent trends in Electrical testing & commissioning. In past we have handled

  • Testing & commissioning of all electrical equipment up to 400kV System
  • Handled transformer up to 315MVA
  • Reactors up to 63MVAR

Along with this we have capabilities of inspecting, testing & commissioning of all types of control & relay panels.

Transmission Line Services

4A Design has expertise in calculations of transmission line mediums such as Conductor Length , Conductor/Shield wire sizing, Parameter sizing, Sag & Tension and earthing calculation for Tower.

Our range also expands to structural design of Towers as per ASCE 10-97, IS802, BS8100 IEC60826 using PLS Tower & STAAD-Pro.