- Expertise
Excellence That Powers Progress
Our Technical Leadership
TATL’s capabilities span precision manufacturing, accredited high voltage testing, advanced design engineering, and dedicated R&D, creating transformers engineered for long life, safety, and consistent performance across demanding grid environments.
Our integrated infrastructure, specialist teams, and industry validated processes ensure every transformer meets rigorous national and international standards, empowering utilities and industries with dependable, future ready power technology.
In-house Testing
All In-House facilities are available for carrying out following Type Tests:
- Di-Electric Type Tests (IEC 60076-3)
- Temperature Rise (IEC 60076-2)
- Noise Measurement (IEC 60076-10)
- No Load Loss and Current at 90 % and 110% of rated Voltage (IEC 60076-1)
- Power Taken by Fan
As per IEC 60076-1, Short Circuit test comes under Special Test Category. Transformers supplied up to 220 kV have been successfully short circuit tested in accordance with IEC 60076 and IS 2026, in Central Power Research Institute (CPRI), a member of STL International group of testing laboratories.
All In-House facilities are available for carrying out following Special Tests, except short circuit test:
- Dielectric special tests (IEC 60076-3)
- Winding hot-spot temperature-rise measurements
- Determination of capacitances windings-to-earth, and between windings
- Measurement of dissipation factor (tan d) of the insulation system capacitances
- Determination of transient voltage transfer characteristics (Annex B of IEC 60076-3:2000).
- Measurement of zero-sequence impedance(s) on three-phase transformers (11.6)
- Measurement of d.c. insulation resistance each winding to earth and between windings
- Vacuum deflection test on liquid immersed transformers (11.9)
- Pressure deflection test on liquid immersed transformers (11.10)
- Vacuum tightness test on site on liquid immersed transformers (11.11)
- Frequency response (Frequency Response Analysis or FRA)
- Check of external coating (ISO 2178 and ISO 2409 or as specified)
- Measurement of dissolved gasses in dielectric liquid
- Mechanical test or assessment of tank for suitability for transport
- INNOVATION
Design and Engineering Excellence
TATL’s design philosophy is rooted in precision and rigorous engineering discipline. Every transformer is crafted to meet global standards, deliver high efficiency, and ensure long operational life with minimal failure risk. With five decades of experience and more than 1,000 prototype designs, our engineering capability continues to set industry benchmarks.
TATL uses advanced FEM based design software for high quality transformer design conforming to IS & CBIP, IEC, BS, DIN and ANSI, supported by short circuit and impulse voltage capability validation through internationally acclaimed simulation software, along with 3D visualisations of manufacturing drawings for improved accuracy.
Our reliability record includes in FIRST ATTEMPT successfully conducted twelve number short circuit tests in CPRI India (a STL member), with transformers upto 160 MVA, 220 kV successfully clearing short circuit testing in the very first attempt, demonstrating strong design integrity and manufacturing precision.
TATL drives in-house technology development upto 400 kV class, backed by more than five decades of transformer design and engineering experience and over 1000 design prototypes, ensuring continuous enhancement of high voltage design capability.
- R&D
Research and Development
Technical Associates Transformers Ltd. (TATL) drives engineering innovation through a dedicated R&D unit supported by a highly skilled design team. The group develops transformers across 400 kV, 220 kV, and 132 kV ratings using fully computerised, proprietary software and advanced mechanical design tools. All designs undergo rigorous validation, including dynamic short circuit capability, impulse withstand performance, and noise reduction, with third-party testing at accredited laboratories such as CPRI. This international software-based design approach enables customised, reliable, and cost-efficient solutions. Guided by industry experts, TATL invests consistently in R&D, focusing on developing and commercialising technologies vital to future growth and the evolving power sector.
