NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant IEC 62052 or IEC 62059 standards. For accuracy requirements and other requirements specific to class indices, see the relevant IEC 62053 standards.

NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, and recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.

NOTE 5 Product requirements for Power Metering and Monitoring Devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557‑12. However, devices compliant with IEC 61557‑12 are not intended to be used as billing meters unless they are also compliant with IEC 62052‑11 and one or more relevant IEC 62053‑xx particular requirements (accuracy class) standard.

NOTE 6 Product requirements for Power Quality Instruments (PQIs) are covered in IEC 62586‑1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000‑4‑30. Requirements for testing of the power quality measurement functions are covered in IEC 62586‑2.

NOTE 7 The IEC TC13 strives to consider EMC phenomena that may occur in practice in meter installations and to amend its standards to ensure that an appropriate level of electromagnetic compatibility is specified for electricity metering equipment. To this end, IEC TC13 cooperates with the relevant IEC technical committees to characterize electromagnetic phenomena, to define emission limits, immunity levels and immunity verification methods based on which the appropriate test methods and requirements can be developed in the TC13 electricity metering equipment standards.

NOTE 8 Some examples include pulse inputs and outputs, control inputs and outputs, and energy test outputs.

NOTE 10 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to agreement between the manufacturer and the purchaser.

NOTE 11 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.

NOTE 12 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.

NOTE 13 Billing systems, such as smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.