prEN IEC 63474:2025

This document specifies methods of measurement of electrical power in networked standby mode and the reporting of the results for edge equipment.
The measurement of power and energy use in non-active mode, other than networked standby mode, is covered by IEC 62301, including the input voltage range.
This document applies to edge equipment that are powered by:
– low voltage mains AC power (𝐿𝐿𝐿𝐿 ≤ 1000 𝑉𝑉 𝐴𝐴𝐴𝐴), or
– an external power supply that provides low voltage (𝐿𝐿𝐿𝐿 ≤ 1000 𝑉𝑉) or extra low voltage (𝐸𝐸𝐸𝐸𝐸𝐸 ≤ 50 𝑉𝑉) AC or DC power, or
– a separate source of extra low voltage DC power (𝐸𝐸𝐸𝐸𝐸𝐸 ≤ 50 𝑉𝑉 𝐷𝐷𝐷𝐷), or
– an internal main battery.
Conditions that are out of scope:
– active mode (primary function),
– other non-active mode (which are either covered by IEC 62301 or by specific product group standards),
– conditions where main batteries are being charged other than maintenance mode,
– disconnected condition of the equipment.
This document applies to the following product groups where a networked standby mode is present:
– edge equipment with a network reactivation function, such as household appliances, information technology equipment, audio, video and multimedia systems and equipment,
– digital radio receivers with an emergency warning function,
– gas burning equipment.
NOTE 1 The measurement of power, energy use and performance of products during their intended use (when performing their primary functions) are generally specified in product standards and are not covered by this document.
NOTE 2 Networked standby mode for lighting equipment and the measurement of power is specified in IEC 63103.
NOTE 3 interconnecting equipment (equipment that provides network infrastructure and function) is out of scope.
Measurement of electrical power in networked standby mode for interconnecting equipment is the subject of ETSI standard EN 303 423 [2].
This document also provides a method to test power management and to test whether it is possible to deactivate wireless network connection(s).
NOTE 4 Edge equipment can also include auxiliary battery.
This document has the status of a horizontal publication in accordance with IEC Guide 108.