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BS EN IEC 62052-11:2021

BS EN IEC 62052-11:2021

$245.25

Electricity metering equipment. General requirements, tests and test conditions – Metering equipment

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BSI 2021 128
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IEC 62052-11:2020 (E) specifies requirements and associated tests, with their appropriate conditions for type testing of AC and DC electricity meters. This document details functional, mechanical, electrical and marking requirements, test methods, and test conditions, including immunity to external influences covering electromagnetic and climatic environments. 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, or 1 500 V DC; • have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays; • operate with integrated displays (electromechanical or static meters); • operate with detached indicating displays, or without an indicating display (static meters only); • be installed in a specified matching sockets or racks; • 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 tested for compliance with this document and the relevant IEC 62053 series documents only if such meters and their LPITs are tested together as directly connected meters. This document is also applicable to auxiliary input and output circuits, operation indicators, and test outputs of equipment for electrical energy measurement. This document also covers the common aspects of accuracy testing such as reference conditions, repeatability and measurement of uncertainty. This document does not apply to: • meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC, or 1 500 V DC; • meters intended for connection with low power instrument transformers (LPITs as defined in the IEC 61869 series of standards) when tested without such transformers; • metering systems comprising multiple devices (except of 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 2003, 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: a) Removed all meter safety requirements; the meter safety requirements are covered in IEC 62052-31:2015; b) Included requirements for meter power consumption and voltage requirements from IEC 62053-61; IEC 62053-61 is withdrawn; c) Included requirements for meter symbols from IEC 62053-52; IEC 62053-52 is withdrawn; d) Included requirements for meter pulse output devices from IEC 62053-31; IEC 62053-31 is withdrawn; e) Added new requirements and tests including: meters with detached indicating displays, and meters without indicating displays, meter sealing provisions; measurement uncertainty and repeatability; time-keeping accuracy; type tes

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
9 CONTENTS
15 FOREWORD
17 INTRODUCTION
20 1 Scope
21 2 Normative references
24 3 Terms and definitions
3.1 General definitions
28 3.2 Definitions related to the functional elements
31 3.3 Definitions of meter ports
32 3.4 Definitions of mechanical elements
34 3.5 Definitions related to measurements
37 3.6 Definitions related to external influences
40 3.7 Definition of tests
3.8 Definitions related to electromechanical meters
41 3.9 Definitions related to meter marking and symbols
42 4 Nominal electrical values
4.1 Voltages
4.1.1 Nominal voltages
Tables
Table 1 – Nominal voltages
43 4.1.2 Voltage ranges
4.2 Currents
4.2.1 Nominal currents
4.2.2 Starting current
4.2.3 Minimum current
Table 2 – Voltage ranges
Table 3 – Preferred values of nominal currents
44 4.2.4 Maximum current
4.2.5 Current ranges
4.3 Frequencies
4.3.1 Nominal frequencies
4.3.2 Frequency ranges
4.4 Power consumption
Table 4 – Current ranges
Table 5 – Frequency ranges
45 Table 6 – Maximum power consumption
46 5 Construction requirements
5.1 General
5.2 Mechanical tests
5.2.1 Shock test
47 5.2.2 Vibration test
5.3 Window
5.4 Terminals – Terminal block(s) – Protective conductor terminal
5.5 Sealing provisions
5.5.1 General
5.5.2 Meter case
48 5.5.3 Meter terminals
5.5.4 Sealing of detached indicating displays
5.5.5 Sealing of LPIT connections
49 5.5.6 Sealing of meter configuration
5.6 Display of measured values
5.6.1 General
5.6.2 Meters without indicating displays
5.6.3 Meters with indicating displays
50 5.7 Storage of measured values
5.8 Pulse outputs
5.8.1 General
5.8.2 Optical test output
52 5.8.3 Electrical pulse output
5.8.4 Operation indicator
53 5.9 Electrical pulse inputs
5.9.1 General characteristics
5.9.2 Functional tests of electrical pulse inputs
5.10 Auxiliary power supply
54 6 Meter marking and documentation
6.1 Meter accuracy class marking
6.2 Meter marking
56 Table 7 – Marking and documentation requirements
58 6.3 Connection diagrams and terminal marking
6.4 Symbols
6.4.1 General
59 6.4.2 Symbols for the measuring elements
6.4.3 Symbols for transformer-operated meters
6.4.4 Identification of the displayed information
60 6.4.5 Marking of the measured quantity
6.4.6 Symbols of principal units used for meters (see Table 8)
Table 8 – Symbols of principal units used for meters
61 6.4.7 Symbols for auxiliary devices
6.4.8 Symbols for details of the suspension of the moving element
6.4.9 Symbols for communication ports
6.5 Documentation
6.5.1 Installation manuals
6.5.2 Instruction for use
7 Metrological performance requirements and tests
7.1 General test conditions
62 Table 9 – Voltage and current balance
Table 10 – Reference conditions
63 7.2 Methods of accuracy verification
7.3 Measurement uncertainty
64 7.4 Meter constant
7.5 Initial start-up of the meter
65 7.6 Test of no-load condition
7.7 Starting current test
66 7.8 Repeatability test
7.9 Limits of error due to variation of the current
Table 11 – Repeatability test points
67 7.10 Limits of error due to influence quantities
7.11 Time-keeping accuracy
8 Climatic requirements
8.1 General
8.2 Environmental conditions
8.3 Tests of the effects of the climatic environments
8.3.1 General test requirements
Table 12 – Environmental conditions
68 8.3.2 Acceptance criteria
8.3.3 Dry heat test
8.3.4 Cold test
8.3.5 Damp heat cyclic test
69 8.3.6 Protection against solar radiation
8.4 Durability
9 The effects of external influence quantities and disturbances
9.1 General
70 Table 13 – Summary of the tests of immunity to influence quantities
71 9.2 Acceptance criteria
Table 14 – Summary of the tests of immunity to disturbances
72 9.3 Electromagnetic compatibility (EMC)
9.3.1 General
Table 15 – Acceptance criteria
74 9.3.2 Voltage dips and short interruptions
Table 16 – Voltage dips, short interruptions and voltage variations immunity tests
75 Table 17 – Voltage dips, short interruptions and voltage variations on DC input power port immunity tests
76 9.3.3 Electrostatic discharge immunity test
9.3.4 Radiated, radio-frequency, electromagnetic field immunity test – test without current
77 9.3.5 Radiated, radio-frequency, electromagnetic field immunity test – test with current
9.3.6 Electrical fast transient/burst immunity test
78 9.3.7 Immunity to conducted disturbances, induced by radio-frequency fields
9.3.8 Test for immunity to conducted, differential mode disturbances and signalling in the frequency range 2 kHz to 150 kHz at AC power ports
79 9.3.9 Surge immunity test
80 Table 18 – Surge immunity test voltage
81 9.3.10 Ring wave immunity test
9.3.11 Damped oscillatory wave immunity test
82 9.3.12 External static magnetic fields
83 9.3.13 Power frequency magnetic field immunity test
9.3.14 Emission requirements
84 9.4 Tests of immunity to other influence quantities
9.4.1 General
9.4.2 Harmonics in the current and voltage circuits
85 9.4.3 Voltage variation
86 9.4.4 Ambient temperature variation
9.4.5 Interruption of phase voltage
Table 19 – Evaluation of primary meter functions under influence of voltage variation
87 9.4.6 Frequency variation
9.4.7 Reversed phase sequence
9.4.8 Auxiliary voltage variation
88 9.4.9 Operation of auxiliary devices
9.4.10 Short-time overcurrents
89 9.4.11 Self-heating
9.4.12 Fast load current variations
90 9.4.13 Earth fault
10 Type test
10.1 Test conditions
91 10.2 Type test report
92 Annexes
Annex A (normative) Optical test output
Figures
Figure A.1 – Test arrangement for the test output
Figure A.2 – Waveform of the optical test output
93 Annex B (normative) Class A and class B electrical pulse outputs
B.1 Electrical characteristics of pulse output
Figure B.1 – Physical interface of the electrical pulse output
Table B.1 – Specified operating conditions
94 B.2 Electrical output pulse waveform
B.3 Test of electrical pulse output
B.4 Test of pulse input
Figure B.2 – Electrical output pulse waveform
Figure B.3 – Pulse output test set-up
Table B.2 – Test of pulse output
95 Figure B.4 – Pulse input test set-up
Table B.3 – Test of pulse input device
96 Annex C (normative) Electrical pulse output for special applications and long distances according to IEC 60381-1:1982
C.1 Specified operating conditions and output pulse waveform
Table C.1 – Specified operating conditions
97 C.2 Test of pulse output
Figure C.1 – Output pulse waveform
Figure C.2 – Pulse output test set-up
98 C.3 Test of pulse input
Figure C.3 – Pulse input test set-up
Table C.2 – Test of pulse output device
Table C.3 – Test of pulse input device
99 Annex D (informative) Meter symbols and markings
Table D.1 – Examples of voltage marking according to network voltage
Table D.2 – Symbols for measuring elements
100 Table D.3 – Marking of the measured quantity (examples)
Table D.4 – Inscriptions indicating the accuracy class and the meter constant (examples)
101 Table D.5 – Symbols for transformer-operated meters (examples)
Table D.6 – Tariff function symbols (examples)
Table D.7 – Symbols for tariff function (examples)
102 Table D.8 – Symbols for auxiliary devices (examples)
Table D.9 – Symbols for details of the suspension of the moving element (examples)
103 Table D.10 – Symbols for communication ports (examples)
104 Annex E (informative) Meter ports
Figure E.1 – Typical port configuration of a directly connected meter (example)
105 Figure E.2 – Typical port configuration of a transformer operated meter (example)
Figure E.3 – Typical port configuration of a LPIT operated meterwith a detached indicating display (example)
107 Annex F (informative) Test set-up for EMC tests
Figure F.1 – Test set-up for the electrical fast transient/burst immunity test for transformer operated meters: each port (Mains, CT, HLV, ELV) is tested separately by adding the coupling device to the respective port
108 Figure F.2 – Test set-up for the electrical fast transient/burst immunity test for directly connected meters: each port (Mains, HLV, ELV) is tested separately by adding the coupling device to the respective port
109 Annex G (informative) Test for immunity to conducted, differential mode disturbances and signalling in the frequency range 2 kHz to 150 kHz at AC power ports
Figure G.1 – Example of a test set-up for immunity to conducted, differential mode disturbances and signalling in the frequency range 2 kHz to 150 kHz at AC power ports (from IEC 61000-4-19: 2014)
110 Annex H (normative) Test circuit diagrams for testing influence of harmonics and interharmonics
Figure H.1 – Test circuit diagram (informative, test of influenceof interharmonics and odd harmonics)
111 Figure H.2 – Burst fired wave-form (interharmonics)
Figure H.3 – Informative distribution of interharmonic content of burst-fired waveform (the Fourier analysis is not complete)
112 Figure H.4 – Phase fired waveform (odd harmonics) – 90° fired waveform
Figure H.5 – Informative distribution of harmonic content of 90° phase fired waveform (the Fourier analysis is not complete)
113 Figure H.6 – Phase fired waveform (odd harmonics) – 45° fired waveform
Figure H.7 – Phase fired waveform (odd harmonics) – 135° fired waveform
114 Figure H.8 – Test circuit diagram for half-wave rectification (DC and even harmonics)
Figure H.9 – Half-wave rectified waveform (DC and even harmonics)
115 Figure H.10 – Informative distribution of harmonic content of half-wave rectified waveform (the Fourier analysis is not complete)
116 Annex I (informative) Short time overcurrent test waveform
117 Annex J (informative) Fast load current variation test
118 Annex K (normative) Electromagnet for testing the influence of externallyproduced magnetic fields
K.1 Permanent magnet for testing the influence of external static magnetic field
K.2 Electromagnet for testing the influence of external static magnetic field with magneto-motive force of 1 000 At (ampere-turns) (see Figure K.1)
119 Figure K.1 – Electromagnet for testing the influence of external static magnetic field with magneto-motive force of 1 000 At (ampere-turns)
120 Annex L (normative) Test circuit diagram for the test of immunity to earth fault
Figure L.1 – Circuit to simulate earth fault condition in phase 1
Figure L.2 – Voltages at the meter under test
121 Annex M (informative) Meter current range
Figure M.1 – Meter current range
122 Annex N (informative) Application to Branch Circuit Power Meters
N.1 Overview
N.2 Definitions
N.3 General
123 N.4 Cross-channel influences
N.5 Channel configuration and sealing for multi-branch meters
N.6 Verification for multi-branch meters
Table N.1 – Cross-channel influence test conditions for multi-circuit meters
124 Annex O (informative) Overview of the technical changes
125 Annex P (informative) Test schedule – Recommended test sequences

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BS EN IEC 62052-11:2021
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