Mining projects. Define the installation conditions.

Typical power needs

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

• Crushing, conveying, pumping and associated site services can involve different load and starting duties.
• Provide the load schedule, drive data, site distribution diagram and any planned relocation or expansion requirements.
• Identify exposure, dust, moisture, access and statutory site requirements through qualified project teams.

OSTL products to discuss

Equipment for surface installations must not be treated as suitable for underground or hazardous locations without an agreed design and evidence. No flameproof, underground-mine, mobile-package or hazardous-area certification is claimed here. The intended site and applicable requirements need explicit review.

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.

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.