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BS EN IEC 62052-11:2021+A12:2024

BS EN IEC 62052-11:2021+A12:2024

$215.11

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

Published By Publication Date Number of Pages
BSI 2024 134
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PDF Pages PDF Title
2 undefined
7 Blank Page
30 3.1 General definitions
34 3.2 Definitions related to the functional elements
37 3.3 Definitions of meter ports
38 3.4 Definitions of mechanical elements
40 3.5 Definitions related to measurements
43 3.6 Definitions related to external influences
46 3.7 Definition of tests
3.8 Definitions related to electromechanical meters
47 3.9 Definitions related to meter marking and symbols
48 4.1 Voltages
4.1.1 Nominal voltages
Table 1 – Nominal voltages
49 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
50 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
51 Table 6 – Maximum power consumption
52 5.1 General
5.2 Mechanical tests
5.2.1 Shock test
53 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
54 5.5.3 Meter terminals
5.5.4 Sealing of detached indicating displays
5.5.5 Sealing of LPIT connections
55 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
56 5.7 Storage of measured values
5.8 Pulse outputs
5.8.1 General
5.8.2 Optical test output
58 5.8.3 Electrical pulse output
5.8.4 Operation indicator
59 5.9 Electrical pulse inputs
5.9.1 General characteristics
5.9.2 Functional tests of electrical pulse inputs
5.10 Auxiliary power supply
60 6.1 Meter accuracy class marking
6.2 Meter marking
62 Table 7 – Marking and documentation requirements
64 6.3 Connection diagrams and terminal marking
6.4 Symbols
6.4.1 General
65 6.4.2 Symbols for the measuring elements
6.4.3 Symbols for transformer-operated meters
6.4.4 Identification of the displayed information
66 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
67 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
7.1 General test conditions
68 Table 9 – Voltage and current balance
Table 10 – Reference conditions
69 7.2 Methods of accuracy verification
7.3 Measurement uncertainty
70 7.4 Meter constant
7.5 Initial start-up of the meter
71 7.6 Test of no-load condition
7.7 Starting current test
72 7.8 Repeatability test
7.9 Limits of error due to variation of the current
Table 11 – Repeatability test points
73 7.10 Limits of error due to influence quantities
7.11 Time-keeping accuracy
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
74 8.3.2 Acceptance criteria
8.3.3 Dry heat test
8.3.4 Cold test
8.3.5 Damp heat cyclic test
75 8.3.6 Protection against solar radiation
8.4 Durability
9.1 General
76 Table 13 – Summary of the tests of immunity to influence quantities
77 9.2 Acceptance criteria
Table 14 – Summary of the tests of immunity to disturbances
78 9.3 Electromagnetic compatibility (EMC)
9.3.1 General
Table 15 – Acceptance criteria
80 9.3.2 Voltage dips and short interruptions
Table 16 – Voltage dips, short interruptions and voltage variations immunity tests
81 Table 17 – Voltage dips, short interruptions and voltage variations on DC input power port immunity tests
82 9.3.3 Electrostatic discharge immunity test
9.3.4 Radiated, radio-frequency, electromagnetic field immunity test – test without current
83 9.3.5 Radiated, radio-frequency, electromagnetic field immunity test – test with current
9.3.6 Electrical fast transient/burst immunity test
84 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
85 9.3.9 Surge immunity test
86 Table 18 – Surge immunity test voltage
87 9.3.10 Ring wave immunity test
9.3.11 Damped oscillatory wave immunity test
88 9.3.12 External static magnetic fields
89 9.3.13 Power frequency magnetic field immunity test
9.3.14 Emission requirements
90 9.4 Tests of immunity to other influence quantities
9.4.1 General
9.4.2 Harmonics in the current and voltage circuits
91 9.4.3 Voltage variation
92 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
93 9.4.6 Frequency variation
9.4.7 Reversed phase sequence
9.4.8 Auxiliary voltage variation
94 9.4.9 Operation of auxiliary devices
9.4.10 Short-time overcurrents
95 9.4.11 Self-heating
9.4.12 Fast load current variations
96 9.4.13 Earth fault
10.1 Test conditions
97 10.2 Type test report
98 Annex A (normative) Optical test output
Figure A.1 – Test arrangement for the test output
Figure A.2 – Waveform of the optical test output
99 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
100 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
101 Figure B.4 – Pulse input test set-up
Table B.3 – Test of pulse input device
102 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
103 C.2 Test of pulse output
Figure C.1 – Output pulse waveform
Figure C.2 – Pulse output test set-up
104 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
105 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
106 Table D.3 – Marking of the measured quantity (examples)
Table D.4 – Inscriptions indicating the accuracy class and the meter constant (examples)
107 Table D.5 – Symbols for transformer-operated meters (examples)
Table D.6 – Tariff function symbols (examples)
Table D.7 – Symbols for tariff function (examples)
108 Table D.8 – Symbols for auxiliary devices (examples)
Table D.9 – Symbols for details of the suspension of the moving element (examples)
109 Table D.10 – Symbols for communication ports (examples)
110 Annex E (informative) Meter ports
Figure E.1 – Typical port configuration of a directly connected meter (example)
111 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)
113 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
114 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
115 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)
116 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)
117 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)
118 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)
119 Figure H.6 – Phase fired waveform (odd harmonics) – 45° fired waveform
Figure H.7 – Phase fired waveform (odd harmonics) – 135° fired waveform
120 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)
121 Figure H.10 – Informative distribution of harmonic content of half-wave rectified waveform (the Fourier analysis is not complete)
122 Annex I (informative) Short time overcurrent test waveform
123 Annex J (informative) Fast load current variation test
124 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)
125 Figure K.1 – Electromagnet for testing the influence of external static magnetic field with magneto-motive force of 1 000 At (ampere-turns)
126 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
127 Annex M (informative) Meter current range
Figure M.1 – Meter current range
128 Annex N (informative) Application to Branch Circuit Power Meters
N.1 Overview
N.2 Definitions
N.3 General
129 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
130 Annex O (informative) Overview of the technical changes
131 Annex P (informative) Test schedule – Recommended test sequences

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BS EN IEC 62052-11:2021+A12:2024
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