Diesel generators (DG sets) are indispensable in various sectors, providing reliable backup power during outages and serving as primary power sources in remote locations. Given their critical role, ensuring their safety, quality, and conformity to standards is paramount. Recognizing this, the Bureau of Indian Standards (BIS) has introduced Scheme X Certification, a regulatory framework aimed at standardizing machinery and electrical equipment, including diesel generators, in India.

Launched on 16th March 2022, Scheme X Certification is part of the BIS Conformity Assessment Regulations, 2018. This scheme ensures that machinery and electrical equipment meet stringent Indian standards for safety and quality. The Ministry of Heavy Industries, through the Omnibus Technical Regulation Order, 2024, has mandated that all manufacturers—domestic and foreign—comply with Indian standard requirements under Scheme X Certification by 28th August 2025.

Scope of Certification for Diesel Generators

The BIS Scheme X Certification encompasses:

● All types of diesel generators

● Their assemblies

● Sub-assemblies

● Components

This includes parts such as diesel engines, alternators, control panels, fuel systems, exhaust systems, and more.

Importance of BIS Certification for Diesel Generators

1. Safety Assurance

Certified diesel generators adhere to Indian safety standards, reducing risks associated with electrical hazards, fire, and mechanical failures.

2. Quality and Performance

BIS certification ensures that diesel generators and their components meet performance benchmarks, leading to reliable and efficient operation.

3. Market Access

Post 28th August 2025, only BIS-certified diesel generators and components can be manufactured, sold, or imported in India. Non-compliance may lead to legal repercussions, including fines and product recalls.

4. Consumer Trust

The BIS mark signifies adherence to quality and safety standards, enhancing consumer confidence in the product.

BIS Scheme X Certification Process for Diesel Generators

Step 1: Determine Applicability

Identify whether your diesel generator or its components fall under the mandatory BIS certification scheme.

Step 2: Documentation

Prepare necessary documents, including:

● Technical product file

● Factory license and layout

● Manufacturing process flow

● In-house testing facility details

● Quality control procedures

● Test reports from BIS-recognized labs

Step 3: Application Filing

Submit an application on the BIS portal under the relevant scheme, uploading all required documents and paying the prescribed fees.

Step 4: Product Testing

Send samples to BIS-recognized laboratories for testing against applicable Indian Standards.

Step 5: Factory Inspection

BIS officials conduct an on-site inspection to verify manufacturing practices and quality control systems.

Step 6: Grant of License

Upon successful evaluation, BIS grants the certification, allowing the manufacturer to use the BIS Standard Mark.

Step 7: Surveillance and Renewal

Regular audits and product testing ensure ongoing compliance. Certifications are typically valid for a specific period and require renewal.

Conclusion

The BIS Scheme X Certification is a pivotal regulatory move aimed at standardizing and safeguarding the quality and safety of diesel generators and their components in India. Manufacturers must proactively align their products and processes with Scheme X guidelines to ensure compliance, gain market access, and enhance consumer trust.