BIS CRS Certification for Solar Power Converters

BIS CRS Certification for Solar Power Converters under IS 16221 (Part 2) is mandatory for Indian and foreign manufacturers to ensure safety and quality compliance. Contact UMSPCS Today!

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BIS CRS Registration for Solar Power Converters under IS 16221 (Part 2):2015 and IS/IEC 61683:1999

Solar inverters form a vital component of photovoltaic (PV) systems as they convert the electricity produced by the solar panels into useful power. The fact that these devices are involved in the handling of electrical energy and function under different environmental and load conditions means that their safety and performance have to be carefully evaluated prior to their entering the market.

It is important for manufacturers who want to sell solar inverters in India to have a proper knowledge of BIS CRS Certification for Solar Power Converters. By the means of appropriate Indian Standards, such questions as the safety of inverters and the efficiency of energy conversion will be answered. At the same time, the relevant government regulation will determine whether registration is to be done for a product or not.

What Does BIS CRS Registration Involve for Solar Power Converters?

The registration of solar power converters under the Bureau of Indian Standards (BIS) Compulsory Registration Scheme applies where the product is within the ambit of the relevant government order.

The BIS is India's national standards organisation and has the responsibility for setting up standards and for running the product conformity assessment schemes. Products which have been notified for compulsory registration must satisfy the relevant requirements before they are put on the Indian market under Scheme-II.

As stated in the official BIS Scheme-II information, the power converters used in photovoltaic systems fall within the appropriate solar product category. The specific requirements involved will vary according to the product classification and the current government notifications. Manufacturers must therefore check the most recent order prior to starting the registration process.

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What are the Applicable Standards to Solar Power Converters?

The two important standards relating to solar power converters are IS 16221 (Part 2):2015 and IS/IEC 61683:1999, the latter of which deals with different aspects of inverter compliance.

16221 (Part 2):2015 IS

The standard specifies the special safety requirements that apply to inverters used in photovoltaic power systems and is based on IEC 62109-2:2011; it should therefore be read in conjunction with the general safety requirements given in IS 16221 (Part 1):2016.

IS/IEC 61683:1999

The standard known as Photovoltaic Systems - Power Conditioners - Procedure for Measuring Efficiency specifies a method for measuring the efficiency of power conditioners used in photovoltaic systems.

Which Solar Power Converters Might Need to be Registered with BIS?

The registration requirements that apply will vary according to the product's intended use, its technical specifications, its rated capacity, and the appropriate government order.

Products that may need assessment include:

Grid-connected solar inverters.
Stand-alone photovoltaic inverters.
Hybrid solar inverters.
Inverters that are designed for photovoltaic systems incorporating battery storage.
The other power converters that are included in the relevant notified product category.

The Ministry of New and Renewable Energy (MNRE) has issued regulations relating to solar photovoltaic systems, devices and components. Its 2025 regulation sets out requirements applicable to solar photovoltaic inverters having a capacity over 200 kW.

As a result, manufacturers are advised to check the present scope and the expiry dates instead of assuming that all solar inverters are subject to the same registration process.

What is the Importance of BIS CRS Certification for Solar Power Converters?

In cases where registration is required, complying with the rules enables manufacturers to satisfy the relevant regulatory requirements of India and to demonstrate that their products have been subject to the required conformity assessment.

Key benefits include:

Electrical safety
Performance assessment
Regulatory compliance
Market readiness
Product reliability

The registration itself does not take the place of any other approvals or requirements which may apply to a solar installation, a grid connection, or a specific government programme.

BIS CRS Registration Process for Solar Power Converters

Step 1: Online Registration on the BIS CRS Portal

To start with, the applicant must sign up on the BIS CRS portal in order to get their login details and begin the registration process.
Key Points:

Input the details of the manufacturer and the applicant.

Get the login details in order to continue.

Step 2: Product Testing at a BIS-Recognized Laboratory

The solar power converter is tested in an appropriate laboratory which is recognized by the BIS to ensure that it conforms to the requirements of IS 16221 (Part 2):2015 and to other relevant standards.
Key Points:

Find out which testing requirements apply.

Choose a laboratory that has the relevant testing scope.

Submit representative product samples.

Get the test report that has been prescribed.

Step 3: Submission of the BIS CRS Application

The applicant then submits the CRS application together with the test report and the supporting documents, having completed the necessary testing.
Key Points:

Upload the test report and technical documents that apply.

Make sure product and manufacturer details match.

Submit the required declarations.

Pay the applicable fees.

Step 4: BIS Application Scrutiny

The BIS checks the application, the test report and the supporting documents to see whether the submission conforms to the relevant registration requirements.
Key Points:

Have a look at the test report and the product details.

Verify the submitted documents.

Reply to BIS questions or requests for more information.

If further information is needed, provide it.

Step 5: Grant of BIS CRS Registration

When the application has met the relevant requirements, BIS will process it and grant registration under the Compulsory Registration Scheme.
Key Points:

The BIS grants registration for the product in question.

A distinct R-number is assigned.

The manufacturer is required to comply with the relevant BIS marking and labelling requirements.

The product may only be labelled in accordance with the registration and the applicable regulations.

Documents Required for BIS CRS Registration

The documents needed will vary according to the product, the manufacturer, and the relevant registration route. A typical document checklist might include:

Business Registration Certificate - Proof of company incorporation or legal entity
Product Details & Specifications - Complete technical information of the product
Test Reports - Issued by BIS-recognised labs confirming compliance
Trademark Certificate - Proof of brand ownership (if applicable)
Authorization Letter - For authorised signatory or representative
AIR Documents - Mandatory for foreign manufacturers appointing an Authorised Indian Representative

It is necessary to check the final checklist before submitting it since incomplete documentation may delay the technical review and testing.

BIS CRS Certification Cost for Solar Power Converters

The amount one has to pay for BIS CRS Certification of solar power converters is determined by the inverter's capacity, the applicable testing standards, the number of models, the laboratory charges, the documentation, and the BIS government fees.

Category	Total Cost (Excluding GST)
Indian Manufacturer	₹55,000 + GST
Overseas Client	₹90,000 + GST

The product and its testing requirements should be evaluated before the final cost can be confirmed, and extra charges might be imposed for laboratory testing or retesting.

BIS CRS Certification Timeline for Solar Power Converters

The time taken to carry out BIS CRS registration for Solar Power Converters will depend on the readiness of the documents, the availability of the laboratory, the testing requirements, and the BIS review.

Documentation: Depends on document completeness.
Product Testing: Varies with the testing scope and laboratory schedule.
BIS Approval: Depends on application review and resolution of queries.

It is advisable for manufacturers to plan in advance since incomplete documentation or further testing could cause a delay in registration.

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BIS Certification for Foreign Manufacturers

Foreign manufacturers who are supplying solar power converters to India should check if their products are subject to the compulsory registration requirements in question, and they also have to determine which documents, laboratory testing procedures, and provisions regarding representation in India apply in their particular case.

Preparation should cover:

Keep the same manufacturer and factory details in all documents.
The accurate identification of the model and its technical specifications.
Having been tested by an appropriate laboratory recognized by BIS.
The necessary authorization and documents from an Indian representative, if applicable.
Adhering to the requirements concerning registration, marking, and imports.

Since document discrepancies, delays in the shipment of samples, and variations in product configurations can have an impact on the process, careful coordination is needed for BIS certification of foreign manufacturers.

Common Challenges During Registration

There can be delays for manufacturers if the scope of the product or the technical documentation is not in line with the relevant requirements.

Common issues include:

Choosing the wrong standard or registration route.
Turning in circuit diagrams or specifications that are not complete.
The differences between the samples that were tested and the commercial models.
Not meeting one or more safety rules.
Delays in the delivery of samples or in the laboratory testing.
Wrong labels or the lack of product information.
There is uncertainty regarding the present government order and the product capacity threshold.

Checking the suitability and the documentation before carrying out tests can help in reducing delays that are unnecessary.

How UMSPCS Can Help in BIS CRS Certification

UMSPCS helps manufacturers and importers to understand the product compliance requirements and to get ready for the relevant certification process. The team, which has more than six years' experience in the field and knowledge of over 600 product compliance requirements, can provide assistance with identifying the relevant standards, reviewing the documentation, co-ordinating testing, preparing the applications, and answering any technical questions.

The support provided is based on the product and the relevant registration route, enabling businesses to pursue BIS CRS Certification for electronic products with a better understanding of the requirements.

Our support can include:

Product and standard applicability assessment
IS 16270:2023 compliance review
BIS-recognised laboratory coordination
Sample-testing coordination
Technical document preparation
BIS application preparation and filing
Documentation review
Query and clarification support
AIR coordination
Model and scope assistance
Certification and registration support
Renewal and ongoing compliance assistance

Conclusion

In order to obtain registration at the BIS CRS for solar power converters, manufacturers need to know about the appropriate government order, the relevant Indian Standards, the testing process, and the registration procedure. Before commencing any testing and submitting an application, manufacturers need to check the specific requirements for their inverter ratings.

Are you planning to register your solar power converter in India?

Contact UMSPCS today to talk about the relevant compliance requirements and the next steps.

Also, get to know more information about BIS CRS Certification for Photovoltaic Inverters.

Frequently Asked Questions (FAQs)

This will vary according to the relevant government order, the type of product, and its rated capacity. Manufacturers should check the most recent requirements from BIS and MNRE before applying.

The standards relevant to photovoltaic inverter safety are IS 16221 (Part 2):2015, and the method for measuring power-conversion efficiency is specified by IS/IEC 61683:1999. The standards that apply to the product must be verified.

It lays down specific safety requirements for photovoltaic inverters, covering protection against electrical and other hazards. Generally, the relevant safety requirements also have to be taken into account.

The standard sets out a method for measuring the efficiency of photovoltaic power conditioners and is useful for evaluating their conversion performance under the specified test conditions.

Where the applicable conformity assessment procedure requires it, product samples must be tested by a suitable laboratory recognised by BIS. The extent of the testing will vary according to the product and the applicable standards.

Yes, provided that the product is covered by the relevant registration requirements and the manufacturer satisfies the specified conditions, the Indian representative and documentation requirements should be verified before applying.

Before carrying out the test, it is helpful to check the product's technical specifications, its rated capacity, the intended application, and the most recent government order. Doing so will allow you to determine the right compliance route and prevent any unnecessary expenses.

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BIS CRS Certification for Solar Power Converters