JJF 1245.4-2019 in English

This standard provides detailed guidelines for the evaluation of installed AC energy meters, focusing on specific requirements and safety considerations. It outlines the necessary procedures and criteria to ensure the performance and reliability of these devices under various operating conditions. The document covers essential aspects such as electrical safety, mechanical stability, and environmental adaptability. It also includes test methods and acceptance criteria to verify compliance with established benchmarks. The standard is structured to support both manufacturers and regulatory bodies in maintaining consistent quality and safety standards. It serves as a reference for conducting type evaluations and ensuring that products meet the required specifications.