BIS Scheme X Certification for Transformers and Their Components

bis-scheme-x

Transformers serve as the backbone of power transmission and distribution systems. Whether in industrial setups, commercial buildings, or utility grids, these critical components must meet stringent safety and performance benchmarks. To standardize and enhance the reliability of electrical equipment across India, the Bureau of Indian Standards (BIS) has made Scheme X Certification mandatory for all types of transformers, including their assemblies, subassemblies, and parts.

This guide outlines everything manufacturers need to know about BIS certification for transformers under Scheme X—including the scope, process, and benefits—while highlighting how to stay compliant ahead of the looming deadline.

What Is BIS Scheme X Certification?

Launched on 16th March 2022, BIS Scheme X is a regulatory compliance framework established under the BIS Conformity Assessment Regulations, 2018. It targets machinery and electrical equipment to ensure they align with relevant Indian Standards (IS) for quality, safety, and functional performance.

To enforce this certification, the Ministry of Heavy Industries issued the Omnibus Technical Regulation (OTR) Order, 2024, making BIS certification compulsory for all transformer manufacturers—both Indian and international—by 28th August 2025.

Scope: Products Covered Under Scheme X

The certification applies to a wide array of transformer products and their components, including:

Power Transformers
Distribution Transformers
Instrument Transformers (Current & Voltage)
Dry-Type Transformers
Oil-Immersed Transformers
Auto Transformers
Special-Purpose Transformers (e.g., welding, rectifier)
Transformer Components: cores, windings, bushings, tap changers, enclosures, cooling units, and control assemblies

Also Read: Quality Control Order for Scheme-X

Any transformer or related part falling under relevant HS Codes and electrical machinery classifications must adhere to this mandate.

Why Is BIS Certification Crucial for Transformers?

Electrical Safety Compliance: High-voltage transformers pose serious risks if not designed properly. BIS-certified units are tested to meet established safety norms, reducing chances of fire, electrocution, or system failure.
Consistent Performance & Reliability: BIS testing ensures operational stability, energy efficiency, and minimal losses—critical for uninterrupted power delivery.
Regulatory Approval: From 28th August 2025, only BIS-certified transformers and parts may be sold, imported, or used in India. Non-compliance may result in fines, seizures, or restricted access to the Indian market.
Competitive Market Access: Certification boosts brand credibility and helps manufacturers qualify for government tenders and private-sector projects requiring BIS compliance.

Also Read: Safety Regulations for Machinery and Electrical Equipment

Step-by-Step BIS Certification Process for Transformers

Step 1: Verify Applicability: Confirm that your product is covered under the Scheme X scope by cross-referencing BIS lists and HS codes.
Step 2: Prepare Required Documentation: Compile essential documents such as:
- Technical drawings and design specs
- Internal testing protocols
- Factory layout and licensing
- Quality control procedures
- BIS-approved lab test reports
Step 3: Submit Application Online: Apply via the official BIS portal, upload documentation, and pay the applicable fees.
Step 4: Product Testing: Send product samples to BIS-accredited labs to evaluate conformity with Indian Standards.
Step 5: Factory Audit: BIS inspectors will visit the manufacturing facility to assess infrastructure, production practices, and safety systems.
Step 6: Certification Grant: Once testing and inspection are complete, BIS issues the certification and authorizes use of the Standard Mark.
Step 7: Post-Certification Surveillance: Ongoing audits and sample testing ensure continuous compliance with Scheme X guidelines.

Also Read: FOREIGN MANUFACTURER CERTIFICATION SERVICES

;

Conclusion

The mandatory BIS Scheme X Certification for transformers is more than a compliance checkbox—it’s a pathway to enhanced product reliability, market trust, and long-term growth in the Indian electrical sector.

With the 28th August 2025 deadline fast approaching, transformer manufacturers must initiate the certification process without delay. From preparing technical documents to coordinating lab testing and factory inspections, aligning with BIS standards is essential for business continuity.

Need help navigating the process? Absolute Veritas, a trusted BIS compliance consultancy, can streamline your certification journey—ensuring accuracy, speed, and full regulatory alignment.

For more information contact us at cs@absoluteveritas.com