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BS EN IEC 62053-24:2021

BS EN IEC 62053-24:2021

$142.49

Electricity metering equipment. Particular requirements – Static meters for fundamental component reactive energy (classes 0,5S, 1S, 1, 2 and 3)

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BSI 2021 28
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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

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
12 1 Scope
13 2 Normative references
14 3 Terms and definitions
4 Standard electrical values
4.1 Voltages
4.2 Currents
4.2.1 General
4.2.2 Starting current (see Table 1)
4.2.3 Minimum current (see Table 2)
4.2.4 Maximum current
Tables
Table 1 – Starting current
Table 2 – Minimum current
15 4.3 Frequencies
4.4 Power consumption
5 Construction requirements
6 Meter marking and documentation
7 Accuracy requirements
7.1 General test conditions
7.2 Methods of accuracy verification
7.3 Measurement uncertainty
7.4 Meter constant
7.5 Initial start-up of the meter
7.6 Test of no-load condition
7.7 Starting current test
7.8 Repeatability test
7.9 Limits of error due to variation of the current
16 7.10 Limits of error due to influence quantities
Table 3 – Acceptable percentage error limits(single-phase meters and poly-phase meters with balanced loads or single-phase loads)
17 Table 4 – Acceptable limits of variation in percentage error due to influence quantities
18 7.11 Time-keeping accuracy
19 8 Climatic requirements
9 The effects of external influences
10 Type test
20 Annexes
Annex A (informative) Comparison of acceptable percentage error limits at reference conditions for meters
Figures
Figure A.1 – Acceptable percentage error limits, transformer operated (S) and directly connected meters, In = 5 A, Imax = 10 A, PF = 1,0
Figure A.2 – Acceptable percentage error limits, transformer operated (S) and directly connected meters, In = 5 A, Imax = 10 A, PF = 0,5 inductive / 0,8 capacitive
21 Annex B (informative) Geometric representation of active and reactive power
Figure B.1 – Recommended geometric representation
22 Figure B.2 – Alternative geometric representation
23 Annex C (informative) Influence of the phase displacement of current and voltage transformers on reactive energy measurement
Table C.1 – Phase displacements for current transformerconnected meters without voltage transformers andcorresponding maximum measurement errors for reactive energy
Table C.2 – Phase displacements for current and voltage transformer connected meters and corresponding maximum measurement errors for reactive energy
24 Annex D (informative) Treatment of harmonics and tests for harmonics
D.1 Non- sinusoidal conditions and reactive power definition
D.2 Tests for accuracy under non-sinusoidal conditions
25 D.3 Fifth harmonic test
26 Annex E (informative) Summary of changes

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BS EN IEC 62053-24:2021
$142.49