Transformer Laminations, Stampings and Cores BIS Certification

Who needs it

Any manufacturer making transformer laminations, stampings and cores for the Indian market, and any importer bringing it in, needs the product covered by a valid BIS Certificate of Conformity (CoC). BIS grants the Certificate of Conformity to the manufacturer for a named factory. No other firm or factory can use it, and if production moves, the CoC can be used again only after BIS has inspected the new premises. Overseas manufacturers can apply; BIS’s visit to a factory outside India normally takes two days.

Without it, the goods cannot be manufactured, imported, sold, distributed or stored for sale. Contravening Section 17 of the BIS Act, 2016 can lead to imprisonment of up to two years, or a fine of at least ₹2 lakh (₹5 lakh for repeat contraventions) that can reach ten times the value of the goods, or both.

How to get BIS certification for transformer laminations, stampings and cores

1. Confirm the essential requirement and the product varieties to cover
2. Get a test report from a laboratory BIS accepts, or arrange testing in the factory
3. Apply to BIS with the application form, inspection and testing plan and documents
4. BIS factory visit, testing in the factory and drawing of a verification sample
5. Grant of the Certificate of Conformity for the factory

Testing. The application carries a test report, no more than 180 days old, from a laboratory BIS accepts (its own or BIS-recognised labs, or government labs it has empanelled), unless BIS assesses the product by testing in the factory. BIS then visits the factory to assess production, quality control and testing, and draws a verification sample.

Timeline. BIS’s guidelines expect a Certificate of Conformity to be granted within 60 days of the application, not counting time spent testing in the factory, and within 180 days where it is the first CoC for the product anywhere in India.

Fees. An annual CoC fee of ₹50,000 for large enterprises, paid in advance, with concessions until 31 May 2029 of 80% for micro enterprises and start-ups, 50% for small and 20% for medium enterprises; plus inspection fees for BIS’s factory visits and the cost of testing.

Validity. Under the 2026 amendments to the BIS Conformity Assessment Regulations, a Certificate of Conformity is granted for up to 5 years and can be renewed for further periods of up to 5 years, with fees paid annually.