Distribution Transformer manufacturers in India

Two windings on a laminated steel core transfer power by magnetic induction, with the turns ratio setting the voltage change. In an oil-immersed transformer, the core and windings sit in insulating oil that insulates and carries heat away. A dry-type transformer uses air and solid insulation and is used indoors where oil is a risk. Tap changers adjust the voltage, and protection devices guard against faults and overheating.

An oil-immersed transformer is generally cheaper and cools well, so it suits outdoor and large installations, but oil needs care for fire and leakage. A dry-type transformer avoids oil and suits buildings and indoor locations, at higher cost for the same rating.

• Rating in kVA, primary and secondary voltages and frequency.
• Type: oil-immersed or dry type, and the cooling method.
• Losses at no load and at load, and the efficiency level required.
• Vector group, impedance and the tap changing range.
• Insulation level, enclosure and protection devices, and the standards it follows.
• Type-test and routine-test reports, and the warranty and service.

• ElectricalPower distribution networks and substations.
• Renewable EnergySolar and wind plant step-up and distribution.
• ConstructionPower supply to buildings and industrial plants.