{"id":401778,"date":"2024-10-20T04:58:00","date_gmt":"2024-10-20T04:58:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-61557-122022a12022\/"},"modified":"2024-10-26T08:47:54","modified_gmt":"2024-10-26T08:47:54","slug":"bs-en-iec-61557-122022a12022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-61557-122022a12022\/","title":{"rendered":"BS EN IEC 61557-12:2022+A1:2022"},"content":{"rendered":"

This part of IEC 61557 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also defin the performance of PMD in single- and three-phace AC or DC systems having rated voltages up to 1000 V AC or up to 1500 V DC. These devices are fixed or portable. They are intended to be used indoors and\/or outdoors. Power metering and monitoring devices (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems. Additionally, this document specifies requirements for measurement functions dedicated to metering and monitoring of electrical parameters called power metering and monitoring function (PMF) which can be embedded in equipment (EMPF) that is not classified as PMD and for which the main function is not power metering and monitoring. Requirements for power metering and monitoring function (PMF) and additional requirements for equipments embedding power metering and monitoring function (EPMF) are described in Annex H. The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications. This document does not address functional safety and cyber security aspects. This document is not applicable to: – electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts); – the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020; – power quality instrument (PQI) according IEC 62586 (all parts); – devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument). Note 1 Generally such types of devices are used in the following applications or for the following general needs: – energy management inside the installation, such as facilitating the implementation of documents such as ISO 50001 and IEC 60364-8-1; – monitoring and\/or measurement of electrical parameters; – measurement and\/or monitoring of the quality of energy inside commercial\/industrial installations. Note 2 A measuring and monitoring device of electrical parameters usually consists of several functional modules. All or some of the functional modules are combined in one device. Examples of fuctnional modules are: – measurement and monitoring of several electrical parameters simultaneously; – energy measurement and\/or monitoring, as well as sometimes compliance with aspects of building regulations; – alarms functions; – demand side quality (current and voltage harmonics, over\/under voltages, voltage dips and swells, etc.). Note 3 PMD are historically called power meter, power monitor, power monitor device, power energy monitoring device, power analyser, multifunction meter, measuring multifunction equipment, energe meters. Note 4 Metering, measuring and monitoring applications are explained in Annex A.<\/p>\n

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2<\/td>\nundefined <\/td>\n<\/tr>\n
8<\/td>\nBlank Page <\/td>\n<\/tr>\n
12<\/td>\nBlank Page <\/td>\n<\/tr>\n
13<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
20<\/td>\nFOREWORD <\/td>\n<\/tr>\n
22<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
23<\/td>\n1 Scope <\/td>\n<\/tr>\n
24<\/td>\n2 Normative references
3 Terms, definitions and notations <\/td>\n<\/tr>\n
25<\/td>\n3.1 General definitions <\/td>\n<\/tr>\n
27<\/td>\n3.2 Definitions related to uncertainty and performance <\/td>\n<\/tr>\n
30<\/td>\n3.3 Definitions related to electric phenomena <\/td>\n<\/tr>\n
33<\/td>\n3.4 Definitions related to measurement techniques <\/td>\n<\/tr>\n
34<\/td>\n3.5 Notations
3.5.1 Functions
3.5.2 Symbols and abbreviations <\/td>\n<\/tr>\n
35<\/td>\n3.5.3 Indices
4 Requirements
4.1 General requirements
4.2 PMD general architecture <\/td>\n<\/tr>\n
36<\/td>\n4.3 Classification of PMD
Figures
Figure 1 \u2013 PMD generic measurement chain
Table 1 \u2013 Functional classification of PMD with minimal required functions <\/td>\n<\/tr>\n
37<\/td>\n4.4 Structure of PMD
4.4.1 Structure of PMD related to sensors
4.4.2 Requirements for self-powered PMD
Figure 2 \u2013 Description of different types of PMD
Tables
Table 2 \u2013 Structure of PMD <\/td>\n<\/tr>\n
38<\/td>\n4.5 List of applicable performance classes
4.6 Operating and reference conditions for PMD
4.6.1 Reference conditions
Table 3 \u2013 List of applicable performance classes <\/td>\n<\/tr>\n
39<\/td>\n4.6.2 Rated operating conditions
Table 4 \u2013 Reference conditions for testing
Table 5 \u2013 Rated operating temperatures for portable equipment <\/td>\n<\/tr>\n
40<\/td>\nTable 6 \u2013 Rated operating temperatures for fixed installed equipment
Table 7 \u2013 Humidity and altitude operating conditions <\/td>\n<\/tr>\n
41<\/td>\n4.7 Start-up conditions
4.8 Requirements for PMD functions
4.8.1 General requirements
Figure 3 \u2013 Relationship between ambient air temperature and relative humidity <\/td>\n<\/tr>\n
42<\/td>\n4.8.2 Active power (P) and active energy (Ea) measurements <\/td>\n<\/tr>\n
43<\/td>\nTable 8 \u2013 Intrinsic uncertainty table for active power and active energy measurement <\/td>\n<\/tr>\n
44<\/td>\nTable 9 \u2013 Influence quantities for active power and active energy measurement (1 of 3) <\/td>\n<\/tr>\n
47<\/td>\nTable 10 \u2013 Minimum test period <\/td>\n<\/tr>\n
48<\/td>\n4.8.3 Reactive power (QA, QV) and reactive energy (ErA, ErV) measurements
Table 11 \u2013 Starting current for active power and active energy measurement
Table 12 \u2013 Intrinsic uncertainty table for reactive power and reactive energy measurement <\/td>\n<\/tr>\n
49<\/td>\nTable 13 \u2013 Influence quantities for reactive power and reactive energy measurement <\/td>\n<\/tr>\n
50<\/td>\nTable 14 \u2013 Minimum test period <\/td>\n<\/tr>\n
51<\/td>\n4.8.4 Apparent power (SA, SV) and apparent energy (EapA, EapV) measurements
Table 15 \u2013 Starting current for reactive energy measurement
Table 16 \u2013 Intrinsic uncertainty table for apparent power and apparent energy measurement <\/td>\n<\/tr>\n
52<\/td>\nTable 17 \u2013 Influence quantities for apparent power and apparent energy measurement <\/td>\n<\/tr>\n
53<\/td>\n4.8.5 Frequency (f) measurements
Table 18 \u2013 Intrinsic uncertainty table for frequency measurement <\/td>\n<\/tr>\n
54<\/td>\n4.8.6 RMS phase current (I) and neutral current (IN, INc) measurements
Table 19 \u2013 Influence quantities for frequency measurement
Table 20 \u2013 Rated range of operation for phase current measurement <\/td>\n<\/tr>\n
55<\/td>\nTable 21 \u2013 Rated range of operation for neutral current (calculated or measured)
Table 22 \u2013 Intrinsic uncertainty table for phase current
Table 23 \u2013 Intrinsic uncertainty table for neutral current measurement <\/td>\n<\/tr>\n
56<\/td>\nTable 24 \u2013 Intrinsic uncertainty table for neutral current calculation <\/td>\n<\/tr>\n
57<\/td>\nTable 25 \u2013 Influence quantities for phase current and neutral current measurement <\/td>\n<\/tr>\n
58<\/td>\n4.8.7 RMS voltage (U) measurements
Table 26 \u2013 Rated range of operation for RMS voltage measurement
Table 27 \u2013 Intrinsic uncertainty table for RMS voltage measurement <\/td>\n<\/tr>\n
59<\/td>\nTable 28 \u2013 Influence quantities for RMS voltage measurement <\/td>\n<\/tr>\n
60<\/td>\n4.8.8 Power factor (PFA, PFV) measurements
4.8.9 Short term flicker (Pst) and long term flicker (Plt) measurements
Table 29 \u2013 Intrinsic uncertainty table for power factor measurement <\/td>\n<\/tr>\n
61<\/td>\n4.8.10 Voltage dip (Udip) and voltage swell (Uswl) measurements
Table 30 \u2013 Intrinsic uncertainty table for flicker measurement <\/td>\n<\/tr>\n
63<\/td>\nTable 31 \u2013 Rated range of operation for voltage dips and swells measurement <\/td>\n<\/tr>\n
64<\/td>\nTable 32 \u2013 Intrinsic uncertainty table for voltage dips and swells measurement <\/td>\n<\/tr>\n
65<\/td>\nTable 33 \u2013 Influence quantities for dips and swells measurement <\/td>\n<\/tr>\n
66<\/td>\n4.8.11 Voltage interruption (Uint) measurements <\/td>\n<\/tr>\n
67<\/td>\n4.8.12 Transient overvoltage (Utr) measurements
4.8.13 Voltage unbalance (Unb, Unba) measurements
Table 34 \u2013 Intrinsic uncertainty table for voltage interruption measurement
Table 35 \u2013 Intrinsic uncertainty table for transient overvoltage measurement <\/td>\n<\/tr>\n
68<\/td>\n4.8.14 Voltage harmonics (Uh) and voltage THD (THDu and THD-Ru) measurements
Table 36 \u2013 Intrinsic uncertainty table for voltage unbalance measurement
Table 37 \u2013 Rated range of operation for voltage harmonics measurement
Table 38 \u2013 Intrinsic uncertainty table for voltage harmonics measurement <\/td>\n<\/tr>\n
69<\/td>\n4.8.15 Current unbalance (Inb, Inba) measurements
Table 39 \u2013 Intrinsic uncertainty table for voltage THDu or THD-Ru measurement
Table 40 \u2013 Intrinsic uncertainty table for current unbalance measurement <\/td>\n<\/tr>\n
70<\/td>\n4.8.16 Current harmonics (Ih) and current THD (THDi and THD-Ri) measurements
Table 41 \u2013 Rated range of operation for current harmonics measurement
Table 42 \u2013 Intrinsic uncertainty table for current harmonics measurement
Table 43 \u2013 Intrinsic uncertainty table for current THDi and THD-Ri measurement <\/td>\n<\/tr>\n
71<\/td>\n4.8.17 Minimum, maximum, peak, three-phases average and demand measurements
4.9 General mechanical requirements
4.9.1 Vibration requirements
4.9.2 IP requirements
Table 44 \u2013 Minimum IP requirements for PMD <\/td>\n<\/tr>\n
72<\/td>\n4.10 Safety requirements
4.10.1 Protection against electrical hazards <\/td>\n<\/tr>\n
73<\/td>\n4.10.2 Protection against mechanical hazards
4.10.3 Protection against other hazards
4.11 EMC requirements
4.11.1 Immunity
4.11.2 Emission
4.12 Inputs and\/or outputs
4.12.1 General
4.12.2 Analog outputs <\/td>\n<\/tr>\n
74<\/td>\n4.12.3 Pulse outputs
4.12.4 Control outputs
4.12.5 Analog inputs
4.12.6 Pulse and control inputs
5 Marking and operating instructions
5.1 General
5.2 Marking <\/td>\n<\/tr>\n
75<\/td>\n5.3 Operating, installation and maintenance instructions
5.3.1 General
5.3.2 General characteristics
5.3.3 Essential characteristics <\/td>\n<\/tr>\n
76<\/td>\nTable 45 \u2013 PMD specification form <\/td>\n<\/tr>\n
77<\/td>\n6 Tests
6.1 General
Table 46 \u2013 Characteristics specification template <\/td>\n<\/tr>\n
78<\/td>\n6.2 Type tests of PMD
6.2.1 General
6.2.2 Tests of intrinsic uncertainty
6.2.3 Tests of variation of uncertainty with influence quantities
6.2.4 Test of temperature influence <\/td>\n<\/tr>\n
79<\/td>\n6.2.5 Active power
Figure 4 \u2013 Waveform for odd harmonics influence test on active power measurement <\/td>\n<\/tr>\n
80<\/td>\nFigure 5 \u2013 Spectral content for odd harmonics influence test on active power measurement <\/td>\n<\/tr>\n
81<\/td>\n6.2.6 Apparent power
Figure 6 \u2013 Waveform for sub-harmonics influence test on active power measurement
Figure 7 \u2013 Spectral content for sub-harmonics influence teston active power measurement <\/td>\n<\/tr>\n
82<\/td>\n6.2.7 Power factor
6.2.8 Common mode voltage rejection test
6.2.9 Frequency
Figure 8 \u2013 Common mode voltage influence testing <\/td>\n<\/tr>\n
83<\/td>\n6.2.10 Measurement of voltage harmonics and THDu
6.2.11 Measurement of current harmonics and THDi
Figure 9 \u2013 Waveform for harmonics influence teston frequency measurement <\/td>\n<\/tr>\n
84<\/td>\n6.2.12 Dips and swells
6.2.13 Voltage interruptions
6.2.14 Outputs tests <\/td>\n<\/tr>\n
85<\/td>\n6.2.15 Climatic tests <\/td>\n<\/tr>\n
86<\/td>\n6.2.16 EMC tests
6.2.17 Start-up tests
6.2.18 Gapless measurement test
6.2.19 Safety tests
6.3 Routine tests
6.3.1 Protective bonding test <\/td>\n<\/tr>\n
87<\/td>\n6.3.2 Dielectric strength test
6.3.3 Uncertainty test <\/td>\n<\/tr>\n
88<\/td>\nAnnexes
Annex A (informative) Metering, measuring and monitoring applications
A.1 Applications on demand side and supply side
A.2 Link between applications, devices and standards
Figure A.1 \u2013 Simplified overview of measurement applications on supply side and demand side <\/td>\n<\/tr>\n
89<\/td>\nTable A.1 \u2013 Main measurement applications <\/td>\n<\/tr>\n
90<\/td>\nAnnex B (informative) Definitions of electrical parameters
B.1 General
B.2 Definitions in the presence of a neutral
Table B.1 \u2013 Definition of symbols <\/td>\n<\/tr>\n
91<\/td>\nTable B.2 \u2013 Calculation definitions for electrical parameters <\/td>\n<\/tr>\n
94<\/td>\nB.3 Power measurement in three-phase three-wire systems using the two-wattmeter method
B.3.1 General
Figure B.1 \u2013 Arithmetic and vector apparent powers in sinusoidal situation <\/td>\n<\/tr>\n
95<\/td>\nB.3.2 Total active power
B.3.3 Total vector reactive power using quadrature phase shift definition
Figure B.2 \u2013 Three-phase circuit without neutral <\/td>\n<\/tr>\n
96<\/td>\nB.3.4 Total vector reactive power using Budeanu\u2019s definition
B.4 Additional relationships in case of sinusoidal voltage <\/td>\n<\/tr>\n
97<\/td>\nAnnex C (informative) Convention about the sign of the power factor
C.1 General
C.2 Convention for power factor (consumer perspective)
Figure C.1 \u2013 Formatting of power factor with a consumer perspective <\/td>\n<\/tr>\n
98<\/td>\nC.3 Convention for power factor (producer reference frame)
Figure C.2 \u2013 Convention for power factor with a producer perspective
Table C.1 \u2013 Conventions for the sign of Power factor with a Consumer perspective <\/td>\n<\/tr>\n
99<\/td>\nTable C.2 \u2013 Conventions for the sign of power factor with a producer perspective <\/td>\n<\/tr>\n
100<\/td>\nAnnex D (normative) Definitions of minimum, maximum, peak and demand values
D.1 Demand quantities
D.1.1 General
D.1.2 Power demand
D.1.3 Current demand
D.1.4 Thermal current demand (or bi-metal current demand)
D.1.5 Specified intervals for demand calculation
Figure D.1 \u2013 Thermal current demand <\/td>\n<\/tr>\n
101<\/td>\nD.2 Peak demand quantities
D.3 Three-phase average quantities
D.4 Maximum and minimum quantities
Figure D.2 \u2013 Fixed block interval
Figure D.3 \u2013 Sliding block interval <\/td>\n<\/tr>\n
102<\/td>\nAnnex E (informative) Intrinsic uncertainty and operating uncertainty
E.1 General
E.2 Operating uncertainty calculation
Figure E.1 \u2013 Different kinds of uncertainties <\/td>\n<\/tr>\n
103<\/td>\nFigure E.2 \u2013 Flowchart for the determination of the operating uncertainty <\/td>\n<\/tr>\n
104<\/td>\nAnnex F (informative) Recommended sensor classes for the different kinds of PMD
F.1 General considerations
F.2 Specific case of an active power and energy measurement, achieved by a PMD associated with an external current sensor or\/and a voltage sensor
F.3 List of functions affected by uncertainty of external sensors
Table F.1 \u2013 PMD SD associated with current sensor or PMD DS associated with voltage sensor or PMD SS associated with voltage and current sensors <\/td>\n<\/tr>\n
105<\/td>\nTable F.2 \u2013 List of functions affected by uncertainty of external sensors <\/td>\n<\/tr>\n
106<\/td>\nAnnex G (informative) Notion of measurement uncertainty
G.1 General considerations
G.2 Computing the expanded uncertainty
G.2.1 General
G.2.2 Estimated standard deviation <\/td>\n<\/tr>\n
107<\/td>\nG.2.3 Expanded uncertainty
Table G.1 \u2013 Correction factor C(N) for sample size N <\/td>\n<\/tr>\n
108<\/td>\nG.3 Determining the measurement uncertainty
G.3.1 Systematic error
G.3.2 Measurement uncertainty
Figure G.1 \u2013 Illustration of the notion of measurement uncertainty <\/td>\n<\/tr>\n
109<\/td>\nG.4 Using the measurement uncertainty as a pass\/fail criterion
G.4.1 Intrinsic uncertainty tests
G.4.2 Tests with influence quantities
G.4.3 Overall pass\/fail criterion <\/td>\n<\/tr>\n
110<\/td>\nFigure G.2 \u2013 Overview of the uncertainty test procedure <\/td>\n<\/tr>\n
111<\/td>\nAnnex H (normative) Requirements for power metering and monitoring function (PMF) and additional requirements for equipment embedding power metering and monitoring function (EPMF)
H.1 Scope
H.2 Normative references <\/td>\n<\/tr>\n
112<\/td>\nH.3 Terms, definitions and notations
H.4 Requirements for PMF and additional requirements for EPMF
H.4.1 General requirements
Table H.1 \u2013 List of equipment that may embed EPMF <\/td>\n<\/tr>\n
113<\/td>\nH.4.2 EPMF general architecture
H.4.3 Classification of PMF
Figure H.1 \u2013 Example of architecture of EPMF
Table H.2 \u2013 Functional classification of PMF with minimal required functions <\/td>\n<\/tr>\n
114<\/td>\nH.4.4 Structure of EPMF
H.4.5 List of applicable performance classes for PMF
H.4.6 Operating and reference conditions
Table H.3 \u2013 Structure of EPMF <\/td>\n<\/tr>\n
115<\/td>\nH.4.7 Start-up conditions for EPMF
H.4.8 Requirements for PMF
H.4.9 General mechanical requirements
H.4.10 Safety requirements
H.4.11 EMC requirements
H.4.12 Inputs and\/or outputs
Table H.4 \u2013 Value of current according to the type of EPMF <\/td>\n<\/tr>\n
116<\/td>\nH.5 Marking and operating instructions
H.5.1 General
H.5.2 Marking
H.5.3 Operating, installation and maintenance instructions
Table H.5 \u2013 EPMF specification form <\/td>\n<\/tr>\n
117<\/td>\nH.6 Tests
H.6.1 General
H.6.2 Type tests of EPMF <\/td>\n<\/tr>\n
119<\/td>\nH.6.3 Routine tests of EPMF <\/td>\n<\/tr>\n
120<\/td>\nAnnex I (informative) Potential new requirements derived from IEC 62053-2x series of standards
I.1 Scope <\/td>\n<\/tr>\n
121<\/td>\nI.2 Future requirements for active power (P) and active energy (Ea) measurements
I.2.1 Future intrinsic uncertainty tables
Table I.1 \u2013 Future intrinsic uncertainty table for active power and active energy measurement for classes > 0,5
Table I.2 \u2013 Future intrinsic uncertainty table for active power and active energy measurement for classes \u2264 0,5 <\/td>\n<\/tr>\n
122<\/td>\nI.2.2 Future limits of variations due to influence quantities
Table I.3 \u2013 Limits of variation in percentage error due to influence quantities for classes > 0,5 <\/td>\n<\/tr>\n
124<\/td>\nTable I.4 \u2013 Limits of variation in percentage error due to influence quantities for classes \u2264 0,5 <\/td>\n<\/tr>\n
127<\/td>\nI.3 Future requirements for reactive power (Q) and reactive energy (Er) measurements
I.3.1 Future intrinsic uncertainty tables
I.3.2 Limits of variation in percentage error due to influence quantities
Table I.5 \u2013 Future intrinsic uncertainty table for reactive power and reactive energy measurement
Table I.6 \u2013 Limits of variation in percentage error due to influence quantities <\/td>\n<\/tr>\n
130<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC. Equipment for testing, measuring or monitoring of protective measures – Power metering and monitoring devices (PMD)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n134<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":401788,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[495,2641],"product_tag":[],"class_list":{"0":"post-401778","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-080-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/401778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/401788"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=401778"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=401778"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=401778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}