IEC 62052-31 Electrical Measuring Equipment (AC) - General Requirements, Tests and Test Conditions - Part 31: Product Safety Requirements and Tests

The IEC 62052-31 standard published by the International Electrotechnical Commission (IEC) describes product safety requirements for equipment for electrical energy measurement and control. Designed to measure and control electrical energy in 600 Hz or 50 Hz networks with voltages up to 60 Volts, this standard applies to newly manufactured measuring equipment in which all functional elements, including additional modules, are enclosed or formed in a single enclosure.

In the application of this standard, the following mains circuits are considered dangerous live circuits:

• voltage circuits
• Current circuits of directly connected meters
• Current circuits of meters working with current transformers (considered as off-grid circuits unless grounded)
• neutral circuits
• Relays or control switches that change the mains voltage
• Auxiliary supply circuits designed for connection to the mains

The IEC 62052-31 standard also applies to measuring equipment that includes supply and load control switches, but only in electromechanical operation. When such equipment is designed to be installed in a specific compatible socket, conditions apply to equipment installed in the specified matching socket and tests are performed on that equipment. However, the requirements for plugging and unplugging sockets and meters are not covered by this standard. This international standard is also applicable to auxiliary input and output circuits. For example, pulse inputs and outputs, control inputs and outputs, circuits for meter data exchange.

This standard distinguishes between the following types of equipment :

• Electromechanical meters, static meters and equipment for tariff and load control
• Counters that are directly connected, working with current transformers, working with voltage and current transformers
• Protective class I and protective class II equipment
• Wall- or cabinet-mounted, rack-mounted, and panel-mounted equipment
• Equipment designed for indoor and outdoor use

Our organization also provides electrical measurement equipment (AC) product safety testing services within the scope of IEC 62052-31 standard, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.