BIS Scheme X Certification for Diesel Generators and Their Components

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Diesel generators (DG sets) are essential across numerous industries, offering dependable backup power during outages and serving as standalone energy sources in remote or infrastructure-limited areas. Given their widespread use and importance in critical systems, ensuring their operational safety, performance consistency, and compliance with recognized standards is vital. To enforce these standards, the Bureau of Indian Standards (BIS) has introduced Scheme X Certification, a regulatory mandate under India’s conformity framework for machinery and electrical equipment—including diesel generator systems.

What is Scheme X Certification?

Introduced on 16th March 2022, Scheme X falls under the BIS Conformity Assessment Regulations, 2018. It provides a structured process to evaluate, certify, and regulate machinery for safety, quality, and standard compliance. As per the Omnibus Technical Regulation Order, 2024, issued by the Ministry of Heavy Industries, compliance with Scheme X will be mandatory from 28th August 2025 for diesel generators and their related components—whether manufactured in India or imported.

What Does the Certification Cover?

BIS Scheme X applies to a wide range of equipment related to diesel generator sets, including:

Complete diesel generators
Engines and alternators
Control panels and switchgear
Fuel storage and delivery systems
Cooling and exhaust systems
Subassemblies and spare parts

Also Read: Quality Control Order for Scheme-X

This comprehensive coverage ensures safety and quality at both the system and component levels.

Why BIS Certification is Crucial for Diesel Generators

Operational Safety: Diesel generators operate under high loads, temperatures, and electrical stress. Certification ensures adherence to stringent safety standards to prevent accidents, fires, or equipment failure.
Assured Quality and Efficiency: BIS-certified machines are tested for mechanical durability, energy efficiency, and electrical stability—resulting in reliable performance across diverse environments.
Legal Market Entry: Starting 28th August 2025, only BIS-certified diesel generator sets and their components will be legally permitted for manufacture, sale, or import in India. Businesses failing to comply may face penalties, confiscation of non-certified products, and restrictions on market access.
Enhanced Consumer Confidence: The BIS Standard Mark assures buyers that the product meets Indian regulatory and performance benchmarks—boosting brand credibility and acceptance.

Also Read: FOREIGN MANUFACTURER CERTIFICATION SERVICES

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BIS Scheme X Certification Process for DG Sets

Step 1: Eligibility Check: Identify whether your products (diesel generators or any subcomponents) fall under the mandatory certification category.
Step 2: Documentation Preparation: Compile detailed documents, including:
- Product specifications and technical drawings
- Factory license and production layout
- Quality assurance and process flow
- Internal testing protocols
- BIS lab test reports (if available)
Step 3: Application Submission: Register and submit the application via the BIS online portal, upload all supporting documents, and pay applicable fees.
Step 4: Product Testing: Submit product samples to BIS-recognized laboratories for rigorous testing in line with applicable Indian Standards (IS).
Step 5: Factory Evaluation: BIS officials conduct an on-site audit to assess production processes, testing setups, safety measures, and quality controls.
Step 6: Certification Grant: Upon passing all evaluations, BIS issues a license to affix the Standard Mark (ISI mark) on certified units.
Step 7: Ongoing Surveillance: BIS conducts periodic audits, re-testing, and certification renewals to maintain long-term compliance and product integrity.

Conclusion

BIS Scheme X Certification is a regulatory cornerstone for improving the quality, safety, and standardization of diesel generators in India. With the 28th August 2025 compliance deadline drawing near, it is imperative for manufacturers, importers, and OEM suppliers to align their products with Indian Standards, upgrade production processes, and begin the certification journey without delay.

Compliant businesses won’t just meet legal requirements—they’ll gain a competitive edge in domestic and international markets while earning the trust of consumers and regulatory authorities alike.

For more information contact us atcs@absoluteveritas.com