Description of BS EN IEC 62053-24:2021 2021
IEC 62053-24:2020 applies only to static var-hour meters of
accuracy classes 0,5S, 1S, 1, 2 and 3 for the measurement of
alternating current electrical reactive energy in 50 Hz or 60 Hz
networks and it applies to their type tests only. This document
uses a conventional definition of reactive energy where the
reactive power and energy is calculated from the fundamental
frequency components of the currents and voltages only. This
document applies to electricity metering equipment designed to: •
measure and control electrical energy on electrical networks
(mains) with voltage up to 1 000 V AC; • have all functional
elements, including add-on modules, enclosed in, or forming a
single meter case with 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 electrical energy. Meters designed for
operation with low power instrument transformers (LPITs as defined
in the IEC 61869 series) may be considered as compliant with this
document only if such meters and their LPITs are tested together
and meet the requirements for directly connected meters. This
document does not apply to: • meters for which the voltage
line-to-neutral derived from nominal voltages exceeds 1 000 V AC; •
meters intended for connection with low power instrument
transformers (LPITs as defined in the IEC 61869 series) when tested
without such transformers; • metering systems comprising multiple
devices (except LPITs) physically remote from one another; •
portable meters; • meters used in rolling stock, vehicles, ships
and airplanes; • laboratory and meter test equipment; • reference
standard meters; • data interfaces to the register of the meter; •
matching sockets or racks used for installation of electricity
metering equipment; • any additional functions provided in
electrical energy meters. This document does not cover measures for
the detection and prevention of fraudulent attempts to compromise a
meter’s performance (tampering). This second edition cancels and
replaces the first edition published in 2014 and its amendment
1:2016. This edition constitutes a technical revision. This edition
includes the following significant technical changes with respect
to the previous edition: see Annex E
About BSI
BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.