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Manufacturing Process

The Core

 

The Core

Our iron core has exceptionally low level noise, no load losses and good flux distribution at the joints which is achieved by using high grade, high permeability and cold-rolled grain oriented (CRGO) silicon steel laminations. The effect of harmonics is taken care by using low flux density in the core.

Windings

Windings are the most critical component of the transformer. Mehi Power uses high quality and smooth Electrolytic grade copper conductors for its windings. Our windings are designed to withstand electromechanical stresses exerted during the adverse electrical conditions.

Core-Coil Assembly

We maintain an intensive quality control process due to which Core-Coil assembly of our transformer can withstand tremendous electromechanical stress for a long life span. This is the result of our meticulous workmanship and sturdy design that our every transformer has shown 100% success in type tests at CPRI/ERDA, nationally accredited laboratories.

Tank and Fittings

Our transformer tank consists of robust construction with proper reinforcement to ensure no bulging occurs during transformer’s long life span. Every tank undergoes intensive pressure and vacuum tests as per C.B.I.P. standards to ensure no oil leakage in the tank.

Protection from corrosion is very important to us. The transformer tank is sandblasted and then it is multicoated with superior quality Epoxy primer and Polyurethane paint.

High quality fittings and accessories are sourced from leading suppliers for use in our transformers as per relevant IS and IEC standards.

Testing

Mehi Power dispatches the transformers to our customers only after successfully passing intensive final inspection and testing process. This process ensures that our customers will receive a safe and reliable transformer.

We perform routines tests on all units manufactured in accordance with IS 2026 standards.

  • Measurement of winding resistance
  • Measurement of voltage ratio and check of phase displacement
  • Measurement of short-circuit impedance and load loss
  • Measurement of no-load loss and current
  • Dielectric tests
  • Tests on on-load tap-changers

We also perform several types of special tests such as temperature rise test and magnetic balance test upon customer request.

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