IEC 62052-31:2024

Overview

IEC 62052-31:2024 is an international standard developed by the International Electrotechnical Commission (IEC). This standard specifies the general safety requirements, tests, and test conditions for type testing of electricity metering equipment. It applies to a wide range of devices, including directly connected, transformer-operated, and transducer-operated AC and DC electricity meters, as well as load control equipment. Designed to ensure product safety, IEC 62052-31 covers equipment used to measure and control electrical energy on networks with voltages up to 1,000 V AC or 1,500 V DC.

Compliance with IEC 62052-31 is key for manufacturers, utilities, and testing laboratories seeking to assure the safety, reliability, and proper installation of their metering devices in residential, commercial, and industrial environments.

Key Topics

• Scope of Application
  IEC 62052-31 applies to metering equipment designed to:

  • Measure and control electrical energy on low- and medium-voltage networks (up to 1,000 V AC or 1,500 V DC)
  • Use integrated or detached displays
  • Be wall-mounted or installed in specified sockets and racks
  • Optionally include functionalities beyond energy measurement

• Safety Requirements
  The standard addresses:

  • General product safety for typical installation and operation
  • Protective measures against electrical shock, mechanical hazards, fire, dust, water ingress, and other risks
  • Installation assumptions, such as accessibility and the use of seals or tools for opening equipment

• Testing and Verification
  IEC 62052-31 defines type tests and test conditions, including:

  • Electrical, mechanical, environmental, and marking tests
  • Test conditions for normal, extended, and extreme environments
  • Requirements for dielectric testing, overcurrent protection, and insulation

• Covered and Excluded Equipment
  Included:

  • Directly connected and transformer-operated meters
  • Transducer-operated meters and those compatible with Low Power Instrument Transformers (LPITs)
  • Products with add-on communication modules, integrated displays, and load control functions

  Excluded:

  • Meters for voltages above 1,000 V AC or 1,500 V DC
  • Portable, laboratory, or mobile test equipment
  • Meters for rolling stock, vehicles, or marine/aviation use
  • Reference standard meters and conventional instrument transformers

Applications

IEC 62052-31:2024 is essential for:

• Electricity Meter Manufacturers
  Ensuring compliance with safety requirements during product development and type testing of AC and DC meters, including smart meters and advanced metering infrastructures.
• Utilities and Grid Operators
  Specifying standards for procurement of reliable and safe metering equipment for widespread field installation.
• Testing and Certification Laboratories
  Using standardized test methods and criteria when evaluating new meter designs or modifications for regulatory or market acceptance.
• System Integrators and Installers
  Confirming that only compliant and properly tested equipment is installed in substations, buildings, and industrial facilities.

Related Standards

• IEC 62052-11 - General requirements for electricity metering equipment
• IEC 62053 Series - Accuracy classes and performance tests for electricity meters
• IEC 61869 Series - Instrument transformers including Low Power Instrument Transformers (LPITs)
• IEC 61010-1 - General safety requirements for measuring, control, and laboratory equipment
• IEC 60529 - Ingress protection ratings (dust and water)
• IEC 60364 - Electrical installations of buildings (for reference to installation practices)

Summary

Adherence to IEC 62052-31:2024 ensures the safety and reliability of electricity metering equipment worldwide. By following the outlined requirements and test procedures, stakeholders can reduce electrical and mechanical hazards, maintain operational safety, and guarantee regulatory compliance in diverse installations. For manufacturers, utilities, and testing bodies, this standard is vital to delivering safe and high-quality metering solutions for modern energy networks.