{"id":403216,"date":"2024-10-20T05:05:05","date_gmt":"2024-10-20T05:05:05","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-61557-122022-tc\/"},"modified":"2024-10-26T09:03:29","modified_gmt":"2024-10-26T09:03:29","slug":"bs-en-iec-61557-122022-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-61557-122022-tc\/","title":{"rendered":"BS EN IEC 61557-12:2022 – TC"},"content":{"rendered":"

IEC 61557-12:2018 is available as IEC 61557-12:2018 RLV<\/span> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-12:2018 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 define the performance in single- and three-phase AC or DC systems having rated voltages up to 1 000 V AC or up to 1 500 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. 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 for: \u2013 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); \u2013 the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020; \u2013 power quality instrument (PQI) according IEC 62586 (all parts); \u2013 devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring  instrument). IEC 61557-12:2018 cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) PMD-A has been withdrawn due the fact these devices are now mainly covered by the IEC 62586 series of standards. b) Three categories of PMD have been created with a list of minimum required functions for each category. c) Added a new Annex A explaining the different applications linked to the relevant standards and devices, and another new Annex C about the power factor conventions.  <\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\n30453479 <\/td>\n<\/tr>\n
145<\/td>\nA-30328087 <\/td>\n<\/tr>\n
146<\/td>\nundefined <\/td>\n<\/tr>\n
152<\/td>\nAnnex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
153<\/td>\nAnnex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014\/35\/EU [2014 OJ L96] aimed to be covered <\/td>\n<\/tr>\n
155<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
160<\/td>\nFOREWORD <\/td>\n<\/tr>\n
162<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
163<\/td>\n1 Scope <\/td>\n<\/tr>\n
164<\/td>\n2 Normative references
3 Terms, definitions and notations
3.1 General definitions <\/td>\n<\/tr>\n
166<\/td>\n3.2 Definitions related to uncertainty and performance <\/td>\n<\/tr>\n
170<\/td>\n3.3 Definitions related to electric phenomena <\/td>\n<\/tr>\n
173<\/td>\n3.4 Definitions related to measurement techniques <\/td>\n<\/tr>\n
174<\/td>\n3.5 Notations
3.5.1 Functions
3.5.2 Symbols and abbreviations <\/td>\n<\/tr>\n
175<\/td>\n3.5.3 Indices
4 Requirements
4.1 General requirements
4.2 PMD general architecture <\/td>\n<\/tr>\n
176<\/td>\n4.3 Classification of PMD
Figures
Figure 1 \u2013 PMD generic measurement chain
Tables
Table 1 \u2013 Functional classification of PMD with minimal required functions <\/td>\n<\/tr>\n
177<\/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
Table 2 \u2013 Structure of PMD <\/td>\n<\/tr>\n
178<\/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
179<\/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
180<\/td>\nTable 6 \u2013 Rated operating temperatures for fixed installed equipment
Table 7 \u2013 Humidity and altitude operating conditions <\/td>\n<\/tr>\n
181<\/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
182<\/td>\n4.8.2 Active power (P) and active energy (Ea) measurements <\/td>\n<\/tr>\n
183<\/td>\nTable 8 \u2013 Intrinsic uncertainty table for active power and active energy measurement <\/td>\n<\/tr>\n
184<\/td>\nTable 9 \u2013 Influence quantities for active power and active energy measurement (1 of 3) <\/td>\n<\/tr>\n
187<\/td>\nTable 10 \u2013 Minimum test period <\/td>\n<\/tr>\n
188<\/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
189<\/td>\nTable 13 \u2013 Influence quantities for reactive power and reactive energy measurement <\/td>\n<\/tr>\n
190<\/td>\nTable 14 \u2013 Minimum test period <\/td>\n<\/tr>\n
191<\/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
192<\/td>\nTable 17 \u2013 Influence quantities for apparent power and apparent energy measurement <\/td>\n<\/tr>\n
193<\/td>\n4.8.5 Frequency (f) measurements
Table 18 \u2013 Intrinsic uncertainty table for frequency measurement <\/td>\n<\/tr>\n
194<\/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
195<\/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
196<\/td>\nTable 24 \u2013 Intrinsic uncertainty table for neutral current calculation <\/td>\n<\/tr>\n
197<\/td>\nTable 25 \u2013 Influence quantities for phase current and neutral current measurement <\/td>\n<\/tr>\n
198<\/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
199<\/td>\nTable 28 \u2013 Influence quantities for RMS voltage measurement <\/td>\n<\/tr>\n
200<\/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
201<\/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
203<\/td>\nTable 31 \u2013 Rated range of operation for voltage dips and swells measurement <\/td>\n<\/tr>\n
204<\/td>\nTable 32 \u2013 Intrinsic uncertainty table for voltage dips and swells measurement <\/td>\n<\/tr>\n
205<\/td>\nTable 33 \u2013 Influence quantities for dips and swells measurement <\/td>\n<\/tr>\n
206<\/td>\n4.8.11 Voltage interruption (Uint) measurements <\/td>\n<\/tr>\n
207<\/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
208<\/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
209<\/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
210<\/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
211<\/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
212<\/td>\n4.10 Safety requirements
4.10.1 Protection against electrical hazards <\/td>\n<\/tr>\n
213<\/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
214<\/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
215<\/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
216<\/td>\nTable 45 \u2013 PMD specification form <\/td>\n<\/tr>\n
217<\/td>\n6 Tests
6.1 General
Table 46 \u2013 Characteristics specification template <\/td>\n<\/tr>\n
218<\/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
219<\/td>\n6.2.5 Active power
Figure 4 \u2013 Waveform for odd harmonics influence test on active power measurement <\/td>\n<\/tr>\n
220<\/td>\nFigure 5 \u2013 Spectral content for odd harmonics influence teston active power measurement <\/td>\n<\/tr>\n
221<\/td>\n6.2.6 Apparent power
Figure 6 \u2013 Waveform for sub-harmonics influence test onactive power measurement
Figure 7 \u2013 Spectral content for sub-harmonics influence teston active power measurement <\/td>\n<\/tr>\n
222<\/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
223<\/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
224<\/td>\n6.2.12 Dips and swells
6.2.13 Voltage interruptions
6.2.14 Outputs tests <\/td>\n<\/tr>\n
225<\/td>\n6.2.15 Climatic tests <\/td>\n<\/tr>\n
226<\/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
227<\/td>\n6.3.2 Dielectric strength test
6.3.3 Uncertainty test <\/td>\n<\/tr>\n
228<\/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 onsupply side and demand side <\/td>\n<\/tr>\n
229<\/td>\nTable A.1 \u2013 Main measurement applications <\/td>\n<\/tr>\n
230<\/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
231<\/td>\nTable B.2 \u2013 Calculation definitions for electrical parameters <\/td>\n<\/tr>\n
234<\/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
235<\/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
236<\/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
237<\/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
238<\/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 factorwith a Consumer perspective <\/td>\n<\/tr>\n
239<\/td>\nTable C.2 \u2013 Conventions for the sign of power factor with a producer perspective <\/td>\n<\/tr>\n
240<\/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
241<\/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
242<\/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
243<\/td>\nFigure E.2 \u2013 Flowchart for the determination of the operating uncertainty <\/td>\n<\/tr>\n
244<\/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
245<\/td>\nTable F.2 \u2013 List of functions affected by uncertainty of external sensors <\/td>\n<\/tr>\n
246<\/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
247<\/td>\nG.2.3 Expanded uncertainty
Table G.1 \u2013 Correction factor C(N) for sample size N <\/td>\n<\/tr>\n
248<\/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
249<\/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
250<\/td>\nFigure G.2 \u2013 Overview of the uncertainty test procedure <\/td>\n<\/tr>\n
251<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. 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>\n254<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":403224,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[495,2641],"product_tag":[],"class_list":{"0":"post-403216","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\/403216","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\/403224"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=403216"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=403216"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=403216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}