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eLibrary > BS EN IEC 62052-11:2021+A12:2024 Electricity metering equipment. General requirements, tests and test conditions - Metering equipment >

BS EN IEC 62052-11:2021+A12:2024 Electricity metering equipment. General requirements, tests and test conditions - Metering equipment, 2024

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3.1 General definitions
3.2 Definitions related to the functional elements
3.3 Definitions of meter ports
3.4 Definitions of mechanical elements
3.5 Definitions related to measurements
3.6 Definitions related to external influences
3.7 Definition of tests
3.8 Definitions related to electromechanical meters
3.9 Definitions related to meter marking and symbols
4.1 Voltages [Go to Page]
4.1.1 Nominal voltages
Table 1 – Nominal voltages [Go to Page]
4.1.2 Voltage ranges
4.2 Currents [Go to Page]
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 [Go to Page]
4.2.4 Maximum current
4.2.5 Current ranges
4.3 Frequencies [Go to Page]
4.3.1 Nominal frequencies
4.3.2 Frequency ranges
4.4 Power consumption
Table 4 – Current ranges
Table 5 – Frequency ranges
Table 6 – Maximum power consumption
5.1 General
5.2 Mechanical tests [Go to Page]
5.2.1 Shock test
5.2.2 Vibration test
5.3 Window
5.4 Terminals – Terminal block(s) – Protective conductor terminal
5.5 Sealing provisions [Go to Page]
5.5.1 General
5.5.2 Meter case
5.5.3 Meter terminals
5.5.4 Sealing of detached indicating displays
5.5.5 Sealing of LPIT connections
5.5.6 Sealing of meter configuration
5.6 Display of measured values [Go to Page]
5.6.1 General
5.6.2 Meters without indicating displays
5.6.3 Meters with indicating displays
5.7 Storage of measured values
5.8 Pulse outputs [Go to Page]
5.8.1 General
5.8.2 Optical test output
5.8.3 Electrical pulse output
5.8.4 Operation indicator
5.9 Electrical pulse inputs [Go to Page]
5.9.1 General characteristics
5.9.2 Functional tests of electrical pulse inputs
5.10 Auxiliary power supply
6.1 Meter accuracy class marking
6.2 Meter marking
Table 7 – Marking and documentation requirements
6.3 Connection diagrams and terminal marking
6.4 Symbols [Go to Page]
6.4.1 General
6.4.2 Symbols for the measuring elements
6.4.3 Symbols for transformer-operated meters
6.4.4 Identification of the displayed information
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 [Go to Page]
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 [Go to Page]
6.5.1 Installation manuals
6.5.2 Instruction for use
7.1 General test conditions
Table 9 – Voltage and current balance
Table 10 – Reference 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
Table 11 – Repeatability test points
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 [Go to Page]
8.3.1 General test requirements
Table 12 – Environmental conditions [Go to Page]
8.3.2 Acceptance criteria
8.3.3 Dry heat test
8.3.4 Cold test
8.3.5 Damp heat cyclic test
8.3.6 Protection against solar radiation
8.4 Durability
9.1 General
Table 13 – Summary of the tests of immunity to influence quantities
9.2 Acceptance criteria
Table 14 – Summary of the tests of immunity to disturbances
9.3 Electromagnetic compatibility (EMC) [Go to Page]
9.3.1 General
Table 15 – Acceptance criteria [Go to Page]
9.3.2 Voltage dips and short interruptions
Table 16 – Voltage dips, short interruptions and voltage variations immunity tests
Table 17 – Voltage dips, short interruptions and voltage variations on DC input power port immunity tests [Go to Page]
9.3.3 Electrostatic discharge immunity test
9.3.4 Radiated, radio-frequency, electromagnetic field immunity test – test without current
9.3.5 Radiated, radio-frequency, electromagnetic field immunity test – test with current
9.3.6 Electrical fast transient/burst immunity test
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
9.3.9 Surge immunity test
Table 18 – Surge immunity test voltage [Go to Page]
9.3.10 Ring wave immunity test
9.3.11 Damped oscillatory wave immunity test
9.3.12 External static magnetic fields
9.3.13 Power frequency magnetic field immunity test
9.3.14 Emission requirements
9.4 Tests of immunity to other influence quantities [Go to Page]
9.4.1 General
9.4.2 Harmonics in the current and voltage circuits
9.4.3 Voltage variation
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 [Go to Page]
9.4.6 Frequency variation
9.4.7 Reversed phase sequence
9.4.8 Auxiliary voltage variation
9.4.9 Operation of auxiliary devices
9.4.10 Short-time overcurrents
9.4.11 Self-heating
9.4.12 Fast load current variations
9.4.13 Earth fault
10.1 Test conditions
10.2 Type test report
Annex A (normative) Optical test output
Figure A.1 – Test arrangement for the test output
Figure A.2 – Waveform of the optical test output
Annex B (normative) Class A and class B electrical pulse outputs [Go to Page]
B.1 Electrical characteristics of pulse output
Figure B.1 – Physical interface of the electrical pulse output
Table B.1 – Specified operating conditions [Go to Page]
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
Figure B.4 – Pulse input test set-up
Table B.3 – Test of pulse input device
Annex C (normative) Electrical pulse output for special applications and long distances according to IEC 60381-1:1982 [Go to Page]
C.1 Specified operating conditions and output pulse waveform
Table C.1 – Specified operating conditions [Go to Page]
C.2 Test of pulse output
Figure C.1 – Output pulse waveform
Figure C.2 – Pulse output test set-up [Go to Page]
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
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
Table D.3 – Marking of the measured quantity (examples)
Table D.4 – Inscriptions indicating the accuracy class and the meter constant (examples)
Table D.5 – Symbols for transformer-operated meters (examples)
Table D.6 – Tariff function symbols (examples)
Table D.7 – Symbols for tariff function (examples)
Table D.8 – Symbols for auxiliary devices (examples)
Table D.9 – Symbols for details of the suspension of the moving element (examples)
Table D.10 – Symbols for communication ports (examples)
Annex E (informative) Meter ports
Figure E.1 – Typical port configuration of a directly connected meter (example)
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)
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
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
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)
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)
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)
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)
Figure H.6 – Phase fired waveform (odd harmonics) – 45° fired waveform
Figure H.7 – Phase fired waveform (odd harmonics) – 135° fired waveform
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)
Figure H.10 – Informative distribution of harmonic content of half-wave rectified waveform (the Fourier analysis is not complete)
Annex I (informative) Short time overcurrent test waveform
Annex J (informative) Fast load current variation test
Annex K (normative) Electromagnet for testing the influence of externallyproduced magnetic fields [Go to Page]
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)
Figure K.1 – Electromagnet for testing the influence of external static magnetic field with magneto-motive force of 1 000 At (ampere-turns)
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
Annex M (informative) Meter current range
Figure M.1 – Meter current range
Annex N (informative) Application to Branch Circuit Power Meters [Go to Page]
N.1 Overview
N.2 Definitions
N.3 General
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
Annex O (informative) Overview of the technical changes
Annex P (informative) Test schedule – Recommended test sequences [Go to Page]

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