Power transformer manufacturer in India.

A specification-led enquiry

A power transformer enquiry is more than an MVA rating. Its relationship with the supply network, downstream equipment and operating conditions determines the specification that should be quoted. Start with the electrical duty and the installation brief, rather than selecting a design from an illustrative picture.

Om Shakti Transformers Limited manufactures power and distribution transformers within a confirmed company range of up to 10 MVA and up to 66 kV. Our transformer manufacturing unit is in Howrah, West Bengal, with the corporate office in Kolkata. The limits describe the overall range; a particular rating-and-voltage combination still needs technical confirmation.

Loading and dispatch

Larger units leave our works by crane onto road transport. Share the delivery location, site access and unloading arrangements with your enquiry so dispatch can be planned.

Installed at site

A 5000 kVA (5 MVA) OSTL power transformer in service at an outdoor substation. For a comparable project, share the network duty, voltages and site conditions with your enquiry.

Start with the network duty

Identify whether the enquiry is for a new installation, a replacement or an extension. For a replacement, include the existing nameplate and approved drawings; do not assume that matching the MVA alone makes two units interchangeable.

Describe intended parallel operation, system fault-level information and protection interfaces if relevant. Your project engineer should identify the design conditions; these are specification inputs, not automatically included features.

State access restrictions, unloading arrangements and the required dispatch destination. Electrical suitability and physical installation suitability need to be considered together.

Confirmed range. Details to request.

Copper, aluminium and configuration choices

Copper and aluminium windings are available from OSTL, with selection confirmed for the particular design. A material preference should be evaluated alongside losses, space, interfaces and the project specification. It is not a substitute for a completed technical design. ONAN cooling and a CRGO core may be included as requirements to discuss, but neither should be assumed to be an already confirmed option for every enquiry.

Compare the whole power-transformer offer

Compare quotations against the same technical schedule. A lower headline price is not a useful comparison if losses, accessories, test scope or delivery responsibilities differ. Ask the supplier to identify exclusions and deviations in writing, rather than relying on a general catalogue statement.

OSTL states routine tests per IS 1180 / IS 2026 and BIS licensing in five major transformer categories. Confirm the standard and licence applicability for the actual product; these statements do not establish that every power-transformer design falls under the same licence. Any witnessed, type or special testing requirement needs a separately confirmed scope.

Useful next steps