IEC 62053-41:2021 pdf free download

IEC 62053-41:2021 pdf free download Electricity metering equipment – Particular requirements – Part 41: Static meters for DC energy (classes 0,5 and 1)
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 IEC 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 of
the 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 (IT) 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,LPlTs as defined in the
IEC 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 electicity 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 outsidethe scope of this document.
This document does not apply to:
meters for which the voltage between the two poles, where one of the poles is connecte earth, exceeds 1 500 V DC;
meters to be used in networks other than with two poles in which one of the poles isconnected to earth;
meters intended for connection with low power instrument transformers (LPlTs as definedin the lEC 61869 series) when tested without such transformers;
metering systems comprising multiple devices physically (except LPITs) remote from one another;
portable meters;