Steel & metal plants. Power shaped by the process.

Typical power needs

The following describes general planning considerations for this sector, not a record of a particular installation or an operating-performance promise.

• Melting, refining and other process duties can differ from motors, drives, lighting and auxiliary supplies.
• Provide process-equipment data, operating cycles and the expected coincidence of major loads.
• Ask the electrical designer to define waveform, fault, thermal, protection and network requirements for each duty.

OSTL products to discuss

Arc, induction and ladle furnace transformer categories are confirmed, but the furnace-system specification still governs the offered design. A converter-fed process also needs the relevant converter-interface data. Do not use a plant’s connected load alone as the furnace-transformer specification.

Range and project boundaries

OSTL’s confirmed overall power and distribution transformer range is up to 10 MVA and up to 66 kV. Dry-type transformers are manufactured up to 3 MVA. These are company-range ceilings, not a guarantee of every rating/voltage combination. Special-duty transformer limits, compact-substation component ratings and panel ratings are confirmed per project; 66 kV is not a dry-type or panel rating.

Related SAIL supply record

OSTL supplied transformers to SAIL for the Durgapur Township Project in 2024. This is a township supply milestone—not evidence of a furnace, melting or steel-production installation.

Read the confirmed case record ↗

BIS, ISO and project-specific documentation

OSTL has held BIS licences in all five major transformer categories since 2020. This is a company credential, not a blanket BIS certification claim for this product line. Ask for the exact licence scope and the standards and documentation applicable to the proposed equipment.

OSTL is ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certified; copies available on request. Management-system certification does not establish a particular product rating, enclosure class, efficiency level or test approval. Agree the technical requirements and supporting records in the written offer.

Prepare the industry-specific enquiry

Include the single-line diagram, electrical duty, rating and voltages required, equipment quantities, site conditions, supply boundaries, requested documentation and dispatch destination. State any process or equipment interfaces and identify who is responsible for the electrical design.

For general manufacturing context, see OSTL’s manufacturing units in Howrah. For another sector, use the industries index.

Send a clearer quotation brief

Contact the Kolkata corporate office with the equipment category, duty, rating required, supply/interface voltages, quantity, site conditions and requested dispatch destination. Unknown items can be marked for technical discussion; do not assume a standard configuration.

Landline: 033 4061 3200 · ostltd@hotmail.com. The quotation checklist can help organise the brief.