BIS CERTIFICATION FOR A.C. STATIC TRANSFORMER OPERATED WATT HOUR AND VAR-HOUR SMART METERS, CLASS 0.2S, 0.5S AND 1.0S IS 16444 PART 2

Published Date: March 18, 2025 4 min Read

BIS certification is essential for A.C. Static Transformer Operated Watt Hour and Var-Hour Smart Meters of Class 0.2S, 0.5S, and 1.0S as per IS 16444 (Part 2). This standard ensures that these transformer-operated smart meters meet stringent accuracy, reliability, and security requirements for energy measurement and billing applications. Certification guarantees that the meters undergo rigorous testing for metrological accuracy, communication protocols, data integrity, and environmental durability, ensuring efficient integration into advanced metering infrastructure (AMI) and smart grid systems. Compliance with IS 16444 (Part 2) signifies a manufacturer’s commitment to delivering high-precision metering solutions that enhance energy monitoring and distribution efficiency.

IS 16444 (Part 2) – A.C. Static Transformer Operated Watt Hour and Var-Hour Smart Meters

This standard specifies the technical requirements and testing methods for transformer-operated smart meters used for accurate measurement of active and reactive energy. It defines essential parameters such as accuracy class, communication capabilities, data logging, and power consumption to ensure seamless operation in utility networks. The standard also includes security features to prevent tampering, remote communication functionalities, and interoperability with smart grid applications. Meters conforming to IS 16444 (Part 2) must support bidirectional energy measurement, offer robust protection against voltage surges, and ensure secure data transmission. Testing procedures assess performance under varied load conditions, electromagnetic interference, and compliance with national power distribution standards, making BIS certification a critical requirement.

Benefits of BIS Certification for Transformer Operated Smart Meters

BIS certification under IS 16444 (Part 2) ensures compliance with national quality and safety standards, strengthening product credibility and acceptance in the market. For manufacturers, certification facilitates regulatory approval, enhances competitiveness, and builds trust among utility providers and consumers. For end users, certified smart meters guarantee accurate billing, seamless communication with energy management systems, and enhanced security against unauthorized access. Certification also streamlines procurement processes for government and private-sector power distribution networks, ensuring standardized and efficient energy metering solutions.

Key highlights

Product Name	A.C. Static Transformer Operated Watt Hour and Var-Hour Smart Meters, Class 0.2S, 0.5S and 1.0S
Applicable Indian Standard	IS 16444 Part 2
Applicable Certification Scheme	Product Certification Scheme (ISI Mark Scheme) Scheme 1 - Schedule 2
Compliance Requirement	Mandatory
Quality Control Order	Click here
Scope as per Standard	This standard, IS 16444 (Part 2), specifies the requirements for A.C. static transformer-operated watt-hour and var-hour smart meters of accuracy class 0.2S, 0.5S, and 1.0S. These meters are designed for measuring alternating current (A.C.) electrical active and reactive energy at a frequency of 50 Hz for both single-phase and three-phase balanced and unbalanced loads. The standard also defines the type tests, routine tests, and acceptance tests to ensure compliance with performance, accuracy, and reliability requirements.

Note

For Detailed Information about the Procedure for BIS ISI Certification, Visit :

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Procedure for Domestic Manufacturer
Procedure for Foreign Manufacturer

Timeline for BIS Certification

The estimated timeline for obtaining BIS certification under IS 16444 (Part 2) is:

For Indian Manufacturers (Standard Timeframe – 30 days)
For Foreign Manufacturers (Standard Timeframe – 180 days)

Conclusion

BIS certification under IS 16444 (Part 2) is crucial for ensuring the accuracy, security, and reliability of transformer-operated smart meters in energy distribution systems. Adhering to this standard enables manufacturers to supply high-precision metering solutions that meet industry and regulatory requirements.

Partner with Aleph INDIA for expert assistance in obtaining BIS certification and ensuring compliance with national standards for smart meters.