• Designed for 100% continuous duty cycle
  • Compact design for space saving
  • Minimum load losses resulting low power consumption
  • Reduction in electricity bill
  • Liberal designing & rigorous testing of each equipment
  • Negligible Maintenance
  • Trouble free operation
  • Long service life
  • Low production losses and better efficiency
  • Easy to install, operate and maintain
  • Tailored configuration to meet customer specific requirements
  • Low replacement cost of spare parts.

    Power transformers are key components in power networks. Their availability and longevity have a major impact on grid reliability and profitability. Firstly, let me tell you “what is transformer”? Transformer is an electrical device which transfers one electrical circuit to one or more circuit. Mainly, Transformer is used to increase or decrease voltage into circuit as per the requirement. It works on the principle of Faraday’s law of Electromagnetic Induction which states that “the magnitude of voltage is directly proportional to the rate of change of flux.” Now let me acquaint you with Power Transformer.

    Power Transformers are used to “transform” voltage from one level to another, usually from a higher voltage to a lower voltage. They do this by applying the principle of magnetic induction between coils to convert voltage and/or current levels. Generally, the higher voltage falls into the range of 11-22-33kV whereas lower voltage into 250 or 433V range. The frequency remains identical before and after the transformation of the current.

    We, Tirupati Transformers are always proceeding towards development by providing quality products to our customers. Considering the modern technology, we construct our transformers as per international & National standards. We are one of the leading power transformer manufacturers in Delhi, NCR. To earn goodwill in the transformer industry, our key objective is to provide the best services for our customers so that sustainable relationships can be maintained.

    Power transformers are generally used in transmission network for stepping up or down the voltage level. It operates mainly during high or peak loads and has maximum efficiency at or near full load. Being a power transformer manufacturer, Tirupati transformers have manufactured a tried and tested products that works best under any condition and accuracy that leads to perfection.

    We are trying our best to be the winner in the race to become one of the best power transformer suppliers. For this, Tirupati transformers have strictly followed their tag line i.e. Epitome of quality. We launch our product with many technical specifications that have evolved over time supported by practice and proficiency in transformers.

  • Routine Measurements and Tests
    Routine tests shall be carried out on all transformers conducted accordance with standards as applicable. The following routine measurements and tests shall be carried out:

    • Measurement of winding resistance
    • Measurement of voltage ratio and check of polarity and vector group
    • Measurement of impedance voltages
    • Measurement of load losses
    • Measurement of no load losses and no load current
    • Measurement of harmonics induced overvoltage withstand test
    • Separate source voltage-withstand tests on HV and LV windings
    • Bushing routine tests
    • Oil Leakage Test
    • Relief Device Test
    • Dielectric Routine Tests
    • Galvanizing Tests
    • Magnetic Balance Tests
    • Induced over voltage withstand Tests
    • Tap changer Tests
    • Oil Tests.

  • Fittings and Accessories
    We provide following fittings and accessories with all transformers:

    • Oil Temperature Indicator (OTI)
    • Winding Temperature Indicator (WTI)
    • Magnetic Oil-level Gauge (MOG)
    • Pressure Relief Device (PRD)
    • Marshalling Box
    • Forced Fan Cooling
    • OLTC & RTCC Panel with AVR
    • Bi-directional Rollers
    • Radiator Valves
    • Dehydrating Breather
    • Current Transformer
    • Additional Neutral Terminal.


    Brand Tirupati Transformer
    Rating Upto 10 MVA
    Applicable Standards IS, IEC, BIS etc.
    Cooling ONAN, ONAF
    Insulating Fluid Mineral Oil To Specification
    Frequency 50 Hz, 60 Hz
    Primary Voltage 11KV/ 22 KV/ 33 KV
    Winding Material Copper
    ping On Load Tap Changer, Off Circuit Tap Changer
    Impedance Upto 8.35%,  tolerance  +10%
    Insulation Class ‘A’
    Rated Voltage HV 33 KV
    LV 11 KV
    Highest Continuous system voltage Maximum system voltage ration (HV/LV) 36 KV / 12 KV
    Rated Voltage Ration (HV/LV) 36 KV / 11 KV
    Method of Connection HV Delta
    LV Star

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