IEC 62053-41:2021 pdf free download – Electricity metering equipment – Particular requirements
1 Scope
This part of lEC 62053 applies only to static watt-hour meters of accuracy classes 0,5 and 1 forthe measurement of DC electrical energy in DC systems,and it applies to their type tests only.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant parts of lEC 62052 orIEC 62059.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks with two poles where one ofthe poles is connected to earth and with voltage up to 1 500 v DC;
NOTE 2 There are DC networks with other configurations or with more than 2 poles (for example networks withearth and both a positive and a negative pole).
– have all functional elements,including add-on modules, enclosed in, or forming a single meter case with the exception of indicating displays;
– operate with integrated or detached indicating displays,or without an indicating display;be installed in a specified matching socket or rack;
– optionally，provide additional functions other than those for measurement of electricalenergy.
The electricity metering equipment covered by this document may be used for measuring DCelectrical energy in the following, or similar, application areas:
– in EV (electrical vehicle) charging stations or in EV charging infrastructures，if themeasurement is placed on the DC side;
– in information technology (lT) server farms;
– in DC supply points for communication equipment;
– in low voltage DC networks for residential or commercial areas, if the measurement is placedon the DC side;
– in solar PV (photovoltaic) systems where DC power generation is measured;. in DC supply points for public transport networks (e.g. trolleybus,etc.).
Meters designed for operation with low power instrument transformers,LPITs as defined in theIEC 61869 series，may be tested for compliance with this document only if such meters andtheir LPITs are tested together and meet the requirements for directly connected meters.
NOTE 3 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude,current magnitude,power，etc.;measurement of power quality parameters; load control functions;delivery, time,test, accounting,recording functions; data communication interfaces and associated data security functions. Therelevant standards for these functions may apply in addition to the requirements of this document. However, therequirements for such functions are outside the scope of this document.”
NOTE 5 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant fora particular market are subject to agreement between the manufacturer and the purchaser.
NOTE 6 Specifying requirements and test methods for fraud detection and prevention would be counterproductive.as such specifications would provide guidance for potential fraudsters.
NOTE 7 There are many methods of tampering with meters reported from various markets; designing meters todetect and prevent all kinds of tampering would lead to unjustified increase in costs of meter design, verification andvalidation.
NOTE 8 Billing systems, such as,smart metering systems, are capable of detecting irregular consumption patternsand irregular network losses which enable discovery of suspected meter tampering.
NOTE 9 This document does not specify emission requirements, these are specified in lEC 62052-11:2020,9.3.14.
NOTE 10 DC meters for rolling stock are covered by other IEC standards, e.g .. from TC 9 for railway applications:IEC 62888-1:2018,EC 62888-2;2018, IEC 62888-3;2018, IEC 62888-4:2018, iEC 62888-5:2018.