prEN 50463-2:2025

SLOVENSKI STANDARD
01-december-2025
Železniške naprave - Merjenje energije na vlaku - 2. del: Merjenje energije
Railway applications - Energy measurement on board trains - Part 2: Energy measuring
Bahnanwendungen - Energiemessung auf Bahnfahrzeugen - Teil 2: Energiemessung
Applications ferroviaires - Mesure d'énergie à bord des trains - Partie 2 : Mesure
d'énergie
Ta slovenski standard je istoveten z: prEN 50463-2:2025
ICS:
45.060.10 Vlečna vozila Tractive stock
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
prEN 50463-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2025
ICS 45.060.10 Will supersede EN 50463-2:2017; EN 50463-
2:2017/AC:2018-10; EN 50463-2:2017/A1:2024
English Version
Railway applications - Energy measurement on board trains -
Part 2: Energy measuring
Applications ferroviaires - Mesure d'énergie à bord des Bahnanwendungen - Energiemessung auf Bahnfahrzeugen
trains - Partie 2 : Mesure d'énergie - Teil 2: Energiemessung
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-01-23.

It has been drawn up by CLC/TC 9X.

If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 81040 Ref. No. prEN 50463-2:2025 E

1 Contents Page
2 European foreword . 7
3 Introduction . 8
4 1 Scope .11
5 2 Normative references .12
6 3 Terms, definitions, abbreviations and symbols .13
7 3.1 Terms and definitions .13
8 3.2 Abbreviations .17
9 3.3 Symbols .17
10 4 Requirements .18
11 4.1 General .18
12 4.2 Energy Measurement Function (EMF) .18
13 4.2.1 General .18
14 4.2.2 Electrical requirements .19
15 4.2.3 Accuracy requirements .19
16 4.2.4 Electric traction power supply system change .23
17 4.2.5 Periodic verification .23
18 4.3 Sensors .24
19 4.3.1 General .24
20 4.3.2 General requirements .24
21 4.3.3 Voltage sensors .25
22 4.3.4 Current sensors .30
23 4.4 Energy Calculation Function (ECF).36
24 4.4.1 General .36
25 4.4.2 General requirements .36
26 4.4.3 Electrical requirements .38
27 4.4.4 Accuracy requirements .39
28 4.4.5 Effect of temperature on error limits.40
29 4.4.6 Limits of additional error due to influence quantities .42
30 4.4.7 Electromagnetic compatibility .44
31 4.4.8 Data transfer from ECF to DHS .45
32 4.5 Integrated Energy Measurement Function .46
33 4.5.1 General .46
34 4.5.2 Reference conditions .46
35 4.5.3 Accuracy class and percentage error limits .46
36 4.5.4 Starting conditions .46
37 4.5.5 Electric traction power supply system change .46
38 4.5.6 Re-verification .46
39 4.5.7 Insulation requirements .46
40 4.5.8 Influence of input overvoltage .46
41 4.5.9 Rated primary current (In,EMF) .46
42 4.5.10 Rated continuous thermal current (I ) .47
EMF,cth
43 4.5.11 Rated short-time thermal current (I ) .47
EMF,th
44 4.5.12 Rated dynamic current (I ) .47
EMF,dyn
45 4.5.13 Voltage range on Contact Line .47
46 4.5.14 Voltage variations and short interruptions .47
47 4.5.15 Influence of short-time overcurrents .47
48 4.5.16 Limit of temperature rise .47
49 4.5.17 Percentage error limits for active energy measurement .47
50 4.5.18 Effect of temperature on error limits.48
51 4.5.19 Limits of additional error due to influence quantities .48
52 4.5.20 Electromagnetic compatibility .50
53 4.5.21 Radio interference suppression .51
54 4.5.22 Data transfer from IEMF to DHS .51
55 5 Conformity assessment .51
56 5.1 General .51
57 5.1.1 Introduction .51
58 5.1.2 Applicability .52
59 5.1.3 Methodology .52
60 5.2 Testing framework .52
61 5.2.1 General .52
62 5.2.2 Reporting .53
63 5.3 Design review .54
64 5.3.1 General .54
65 5.3.2 Device design review .54
66 5.3.3 EMF design review .54
67 5.4 Type testing .55
68 5.4.1 General .55
69 5.4.2 Common type testing .55
70 5.4.3 Sensor type test .58
71 5.4.4 ECF type test .66
72 5.4.5 IEMF Type test .76
73 5.5 Routine test .83
74 5.5.1 General .83
75 5.5.2 Visual Inspection.84
76 5.5.3 Insulation test .84
77 5.5.4 Accuracy tests.84
78 Annex A (normative) Test with magnetic induction of external origin .88
79 A.1 General .88
80 A.2 Test method 1 .88
81 A.3 Test method 2 .88
82 Annex B (informative) EMF Configurations .90
83 B.1 Background .90
84 B.2 General .90
85 B.3 EMF with several CMF’s in parallel .90
86 B.4 EMF with several VMFs connected to one ECF .91
87 B.5 EMF with several pairs of VMF and CMF .91
88 B.6 Several EMFs in parallel .92
89 B.7 One VMF or CMF connected to several ECFs .93
90 Annex C (informative) EMF accuracy and measurement uncertainty .94
91 C.1 Expressing EMF accuracy .94
92 C.2 Procedure for the uncertainty estimation .94
93 C.3 Dissertation on measurement model and uncertainty calculation examples .96
94 C.4 Examples of uncertainty calculation.98
95 Annex D (informative) Recommendations for re-verification and defining of its regime .101
96 D.1 Re-verification .101
97 D.1.1 Introduction and background .101
98 D.1.2 Approaches to re-verification .101
99 D.2 Recommendations for defining the re-verification regime .102
100 D.2.1 General approach .102
101 D.2.2 Testing regime.103
102 Annex E (informative) Durability test .104
103 E.1 General .104
104 E.2 Initial measurements .104
105 E.3 Conditioning .104
106 E.4 Intermediate measurements .105
107 E.5 Final temperature ramp .106
108 E.6 Final measurements and acceptance criteria .106
109 E.7 Information to be given in the test report .106
110 Annex ZZ (informative) Relationship between this European Standard and the Essential
111 Requirements of Directive 2016/797/EU aimed to be covered .108
112 Bibliography .109
114 Figures
115 Figure 1 — EMS functional structure and dataflow diagram .10
116 Figure 2 — EMF functional block diagram.11
117 Figure 3 — Accuracy areas .21
118 Figure 4 — Example of maximum percentage error for a VMF of class 0,5 R and a VMF of class
119 1,0 R with input signal in the range u ≤ u ≤ u .29
min1 max2
120 Figure 5 — Example of maximum percentage error for a CMF class 1,0 R AC with input signals
121 in the range 10 % I ≤ I ≤ 120 % I , 5 % I ≤ I < 10 % I and 1 % I ≤ I < 5 % I .34
n n n n n n
122 Figure 6 — ECF Accuracy areas .40
123 Figure 7 — Example of maximum percentage error for an ECF of class 0,5 R and an ECF of
124 class 1,0 R with input signals in Area 1 and Area 2 .41
125 Figure 8 — Test point matrix for ECF accuracy tests (type test) .67
126 Figure 9 — Test point matrix for tests of ambient temperature variation and influence quantities
127 .68
128 Figure 10 — Test circuit diagram for determining the influence on accuracy of odd harmonics
129 or sub-harmonics in the current circuit .71
130 Figure 11 — Phase-fired waveform (shown for 50 Hz) .71
131 Figure 12 — Analysis of harmonic content of phase-fired waveform (shown for 50 Hz) .72
132 Figure 13 — Burst fire waveform (shown for 50 Hz) .72
133 Figure 14 — Analysis of harmonics (shown for 50 Hz) .73
134 Figure 15 — Test point matrix for IEMF accuracy tests (type test) .77
135 Figure 16 — Test point matrix for tests of ambient temperature variation and influence
136 quantities (type test) .78
137 Figure 17 — Test point matrix for ECF Accuracy Tests (routine test) .85
138 Figure 18 — Test point matrix for IEMF accuracy tests (routine test) .86
139 Figure A.1 — Test configuration for test method 1 .88
140 Figure A.2 — Test configuration for test method 2 .89
141 Figure B.1 — EMF with several CMFs in parallel .90
142 Figure B.2 — EMF with several VMFs connected to one ECF .91
143 Figure B.3 — EMF with several pairs of VMF and CMF .92
144 Figure B.4 — EMF with several ECFs .93
145 Figure B.5 — One VMF connected to two ECFs .93
146 Figure C.1 — Rectangular probability distribution function and graphical explanation of
147 standard uncertainty .98
149 Tables
150 Table 1 — Reference conditions .20
151 Table 2 — EMF percentage error limits .22
152 Table 3 — Percentage error limits - VMF .27
153 Table 4 — Maximum percentage error for a VMF including ambient temperature variation .28
154 Table 5 — Temperature coefficient for VMF .29
155 Table 6 — Influence quantities for voltage sensors .30
156 Table 7 — Percentage error limits — AC CMF .32
157 Table 8 — Percentage error limits – DC CMF .33
158 Table 9 — Maximum percentage error for a CMF including ambient temperature variation .33
159 Table 10 — Temperature coefficient for CMF .34
160 Table 11 — Percentage error limits with harmonics — AC current sensor .35
161 Table 12 — Influence quantities for current sensors .35
162 Table 13 — ECF percentage error limits for active energy .39
163 Table 14 — Maximum percentage error for an ECF including ambient temperature variation .41
164 Table 15 — Temperature coefficient for the ECF .42
165 Table 16 — Influence quantities for the ECF .43
166 Table 17 — Maximum percentage error for an IEMF including ambient temperature variation .48
167 Table 18 — Influence quantities for the IEMF .49
168 Table 19 — Test current for harmonics .61
169 Table C.1 — Relative standard uncertainty for each component by considering the operating
170 interval U ≤ U ≤ U and 10 % I ≤ I ≤ 120 % I .98
min1 max2 n n
171 Table C.2 — Relative standard uncertainty for each component by considering the operating
172 interval U ≤ U ≤ U and 10 % I ≤ I ≤ 120 % I .99
min1 max2 n n
173 Table ZZ.1 — Correspondence between this European Standard, Commission Regulation (EU)
174 N° 1302/2014 concerning the Technical Specification for Interoperability relating to the ‘rolling
175 stock — locomotives and passenger rolling stock’ subsystem of the rail system in the
176 European Union* and Directive (EU) 2016/797 .108
178 European foreword
179 This document (prEN 50463-2:2025) has been prepared by CLC/TC 9X “Electrical and electronic
180 applications for railways”.
181 The following dates are proposed:
— latest date by which the existence of this (doa) dav + 6 months
document has to be announced at national
level
— latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
— latest date by which the national standards (dow) dav + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
182 This document will supersede EN 50463-2:2017 and all of its amendments and corrigenda (if any).
183 prEN 50463-2:2025 includes the following significant technical changes with respect to
184 EN 50463-2:2017:
185 — improved burden requirements;
186 — clarifications in the case of an EMF system with integrated VMF, CMF and ECF;
187 — when the equipment type doesn’t consist in the whole EMF, the relevant requirements are fulfilled
188 at system integration and installation level;
189 — updated Annex C on EMF accuracy and measurement uncertainty.
190 This document has been prepared under a standardization request addressed to CENELEC by the
191 European Commission. The Standing Committee of the EFTA States subsequently approves these
192 requests for its Member States.
193 For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of this
194 document.
195 This document is Part 2 of EN 50463 series which consists of the following parts, under the common
196 title Railway applications — Energy measurement on board trains:
197 — Part 1: General;
198 — Part 2: Energy measuring;
199 — Part 3: Data handling;
200 — Part 4: Communication;
201 — Part 5: Conformity assessment.
202 This series of European Standards follows the functional guidelines description in
203 EN ISO/IEC 17000:2004, Annex A “Principles of conformity assessment”, tailored to the energy
204 measurement system (EMS).
205 Introduction
206 The energy measurement system (EMS) provides measurement and data suitable for billing and may
207 also be used for energy management, e.g. energy saving.
208 This series of European Standards uses the functional approach to describe the EMS and on-ground
209 data collecting system (DCS). These functions are implemented in one or more physical devices. The
210 user of this Series of standards is free to choose the physical implementation arrangements.
211 a) Structure and main contents of EN 50463 series:
212 This series of European Standards is divided into five parts. The titles and brief descriptions of each
213 part are given below:
214 1) EN 50463-1 — General:
215 The scope of EN 50463-1 is the energy measurement system (EMS).
216 EN 50463-1 provides system level requirements for the complete EMS and common
217 requirements for all devices implementing one or more functions of the EMS.
218 2) EN 50463-2 — Energy measuring:
219 The scope of EN 50463-2 is the energy measurement function (EMF).
220 The EMF provides measurement of the consumed and regenerated active energy of a
221 railway traction unit. If the traction unit is designed for use on AC electric traction power
222 supply systems the EMF also provides measurement of reactive energy. The EMF provides
223 the measured quantities via an interface to the data handling system.
224 The EMF consists of the three functions: voltage measurement function, current
225 measurement function and energy calculation function. For each of these functions, accuracy
226 classes are specified and associated reference conditions are defined. EN 50463-2 also
227 defines all specific requirements for all functions of the EMF.
228 The voltage measurement function measures the voltage of the contact line (CL) system and
229 the current measurement function measures the current taken from and returned to the CL
230 system. These functions provide signal inputs to the energy calculation function.
231 The energy calculation function inputs the signals from the current and voltage measurement
232 functions and calculates a set of values representing the consumed and regenerated
233 energies. These values are transferred to the data handling system and are used in the
234 creation of compiled energy billing data (CEBD).
235 The standard has been developed taking into account that in some applications the EMF is
236 subjected to legal metrological control. All relevant metrological aspects are covered in
237 EN 50463-2.
238 EN 50463-2 also defines the conformity assessment of the EMF and the functions of the
239 EMF.
240 3) EN 50463-3 — Data handling:
241 The scope of EN 50463-3 is the data handling system (DHS) and the associated
242 requirements of data collecting system (DCS).
243 The on board DHS receives, produces and stores data, ready for transmission to any
244 authorized receiver of data onboard or on ground. The main goal of the DHS is to produce
245 compiled energy billing data (CEBD) and transfer it to an on ground data collecting system
246 (DCS). The DHS can support other functions on board or on ground with data, as long as this
247 does not conflict with the main goal.
248 The DCS on ground receives CEBD, stores the CEBD and transfer it to upstream servers
249 such as settlement system.
250 EN 50463-3 also defines the conformity assessment of the DHS and for the transfer of CEBD
251 to an on-ground DCS.
252 4) EN 50463-4 — Communication:
253 The scope of EN 50463-4 is the communication services.
254 EN 50463-4 gives requirements and guidance regarding the data communication between
255 the functions implemented within EMS as well as between such functions and other on board
256 units where data are exchanged using a communications protocol stack over a dedicated
257 physical interface or a shared network.
258 It includes the board to ground communication service and covers the requirements
259 necessary to support data transfer between DHS and DCS.
260 EN 50463-4 also defines the conformity assessment of the communications services.
261 5) EN 50463-5 — Conformity assessment:
262 The scope of EN 50463-5 is the conformity assessment procedures for the EMS.
263 EN 50463-5 also covers re-verification procedures and conformity assessment in the event of
264 the replacement of a device of the EMS.
265 b) EMS functional structure and dataflow:
266 Figure 1 illustrates the functional structure of the EMS, the relevant operating dataflow and is
267 informative only. Only the main interfaces required by this EN 50463 series are displayed by arrows.
268 Since the communication function is distributed throughout the EMS, it has been widely omitted for
269 clarity, except for the train to ground communication. Not all interfaces are shown.
271 Figure 1 — EMS functional structure and dataflow diagram
272 1 Scope
273 This part of the EN 50463 series specifies the requirements applicable to the energy measurement
274 function (EMF) of an energy measurement system (EMS) for use on board traction units for
275 measurement of energy supplied directly from/to the contact line system.
276 This document also gives the requirements for the current measurement function (e.g. current sensor),
277 the voltage measurement function (e.g. voltage sensor) and the energy calculation function (e.g. energy
278 meter).
279 The conformity assessment for the voltage measurement function, current measurement function, the
280 energy calculation function and a complete energy measurement function is also specified in this
281 document.
282 This document has been developed taking into account that in some applications the EMF can be
283 subjected to legal metrological control. All relevant metrological aspects are covered in this part.
284 Figure 2 shows the flow between the functional blocks of the EMF. Only connections between the
285 functional blocks required by this document are displayed.
287 Figure 2 — EMF functional block diagram
288 2 Normative references
289 The following documents are referred to in the text in such a way that some or all of their content
290 constitutes requirements of this document. For dated references, only the edition cited applies. For
291 undated references, the latest edition of the referenced document (including any amendments) applies.
292 EN 45545-2:2020+A1:2023, Railway applications - Fire protection on railway vehicles - Part 2:
293 Requirements for fire behaviour of materials and components
294 EN 45545-5:2013+A1:2015, Railway applications - Fire protection on railway vehicles - Part 5: Fire
295 safety requirements for electrical equipment including that of trolley buses, track guided buses and
296 magnetic levitation vehicles
297 EN 50121-3-2:2016+A1:2019, Railway applications — Electromagnetic compatibility — Part 3-2:
298 Rolling stock - Apparatus
299 EN 50124-1:2017, Railway applications - Insulation coordination - Part 1: Basic requirements -
300 Clearances and creepage distances for all electrical and electronic equipment
301 EN 50125-1:2014, Railway applications - Environmental conditions for equipment - Part 1: Rolling stock
302 and on-board equipment
303 EN 50155:2021, Railway applications - Rolling stock - Electronic equipment
304 EN 50163:2004, Railway applications - Supply voltages of traction systems
305 EN 50388-1:2022, Railway Applications - Fixed installations and rolling stock - Technical criteria for the
306 coordination between electric traction power supply systems and rolling stock to achieve interoperability
307 - Part 1: General
308 prEN 50463-1:2025, Railway applications - Energy measurement on board trains - Part 1: General
309 prEN 50463-3:2025, Railway applications — Energy measurement on board trains — Part 3: Data
310 handling
311 prEN 50463-5:2025, Railway applications — Energy measurement on board trains — Part 5: Conformity
312 assessment
313 EN 60068-2-1:2007, Environmental testing - Part 2-1: Tests - Test A: Cold (IEC 60068-2 1:2007)
314 EN 60068-2-2:2007, Environmental testing - Part 2-2: Tests - Test B: Dry heat (IEC 60068-2-2:2007)
315 EN 60068-2-30:2005, Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12
316 h cycle) (IEC 60068-2-30:2005)
317 EN 60085:2008, Electrical insulation - Thermal evaluation and designation (IEC 60085:2007)
318 EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
———————
As impacted by EN 50121-3-2:2016/A1:2019.
As impacted by EN 50163:2004/Corrigendum May 2010, EN 50163:2004/A1:2007, EN 50163:2004/AC:2013,
EN 50163:2004/A2:2020, and EN 50163:2004/A3:2022.
As impacted by EN 60529:1991/corrigendum May:1993, EN 60529:1991/A1:2000, EN 60529:1991/A2:2013,
EN 60529:1991/A2:2013/AC:2019-02, and EN 60529:1991/AC:2016-12.
319 EN IEC 61000-4-2:2025, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
320 techniques - Electrostatic discharge immunity test (IEC 61000-4-2:2025)
321 EN IEC 61000-4-3:2020, Testing and measurement techniques - Radiated, radio-frequency,
322 electromagnetic field immunity test (EN 61000-4-3:2020)
323 EN 61000-4-5:2014, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement
324 techniques - Surge immunity test (EN 61000-4-5:2014)
325 EN IEC 61000-4-6:2023, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
326 techniques - Immunity to conducted disturbances, induced by radio-frequency fields (IEC 61000-4-
327 6:2023)
328 EN 61373:2010, Railway applications — Rolling stock equipment — Shock and vibration tests
329 (IEC 61373:2010)
330 EN IEC 61869-1:2024, Instrument transformers - Part 1: General requirements (IEC 61869-1:2023)
331 EN 61869-2:2012, Instrument transformers - Part 2: Additional requirements for current transformers
332 (IEC 61869-2:2012)
333 EN 61869-3:2011, Instrument transformers - Part 3: Additional requirements for inductive voltage
334 transformers (IEC 61869-3:2011)
335 3 Terms, definitions, abbreviations and symbols
336 3.1 Terms and definitions
337 For the purposes of this document, the terms and definitions given in prEN 50463-1:2025 and the
338 following apply.
339 ISO and IEC maintain terminology databases for use in standardization at the following addresses:
340 — ISO Online browsing platform: available at https://www.iso.org/obp
341 — IEC Electropedia: available at http://www.electropedia.org
342 NOTE When possible, the following definitions have been taken from the relevant chapters of the International
343 Electrotechnical Vocabulary (IEV), IEC 60050-311, IEC 60050-312, IEC 60050-313, IEC 60050-314,
344 IEC 60050-321 and IEC 60050-811. In such cases, the appropriate IEV reference is given. Certain new definitions
345 or modifications of IEV definitions have been added in this document in order to facilitate understanding. Expression
346 of the performance of electrical and electronic measuring equipment has been taken from EN 60359.
347 3.1.1
348 accuracy class,
349 designation that identifies a set of error limits for measured quantities under reference conditions
350 and the additional percentage errors due to influence quantities
351 Note 1 to entry: An individual accuracy class is associated with each metrological function of the EMF or with the
352 whole EMF.
353 Note 2 to entry: The suffix “R” is used to differentiate classes according to this document from other technical
354 standards.
———————
As impacted by EN 61000-4-5:2014/A1 :2017.
As imacted by EN 61373:2010/AC:2017-09.
355 3.1.2
356 auxiliary circuit,
357 input/output that is not:
358 — the voltage or current Input/output
359 — the auxiliary power supply
360 3.1.3
361 burden
362 admittance (or impedance) of the secondary circuit expressed in siemens (or ohms) and displacement
363 power factor
364 Note 1 to entry: The burden is usually expressed as the apparent power in volt-amperes absorbed at a
365 specified displacement power factor and at the rated secondary voltage or current
366 [SOURCE: IEC 60050-321: 1986, 321-01-25, modified – “admittance or’ has been added. “expressed
367 in siemens (or ohms) and displacement power factor” has been added. Note 1 to entry has been
368 modified.]
369 3.1.4
370 consumed active energy
371 active energy taken from the Contact Line by the traction unit on which the EMF is installed
372 3.1.5
373 consumed reactive energy
374 reactive energy taken from the Contact Line by the traction unit on which the EMF is installed
375 3.1.6
376 electronic sensor
377 device in which electronic circuits are used to process a measured signal
378 Note 1 to entry: Electronic circuits for processing the measurement signal include items such as analogue to
379 digital converters, signal amplifiers, etc.
380 3.1.7
381 influence quantity,
382 external condition which affects metrological performance
383 3.1.8
384 integrated energy measurement function
385 function, integrated in a single device, making available energy data using as input signals the primary
386 voltage and primary current quantities
387 3.1.9
388 percentage error
389 value given by the following formula:
measured quantity− true quantity
390 Percentage error ×100
true quantity
391 Note 1 to entry: Since the true quantity cannot be determined, it is approximated by a quantity with a stated
392 uncertainty that can be traced to standards agreed upon between supplier and purchaser or to national standards.
393 This uncertainty can be calculated using JCGM 100:2008.
394 3.1.10
395 phase influence function
396 function of the real or apparent phase angle between a measured voltage and a measured current
=
397 Note 1 to entry: Phase influence function expressed as a Displacement Power Factor refers to measurements of
398 real and apparent powers and energies, while sin φ refers to reactive powers and energies.
399 Note 2 to entry: For DC measurements the requirements for a phase influence function of 1 need to be used.
400 3.1.11
401 displacement power factor
402 DPF
403 ratio of the active power of the fundamental component P1 to the apparent power of the fundamental
404 component S1 under periodic conditions
405 Note 1 to entry: In this document, only the fundamental component (also known as cos φ) is considered.
406 3.1.12
407 rated burden
408 value of the burden on which the accuracy requirements of a specification are based
409 [SOURCE: IEC 60050-321: 1986, 321-01-26]
410 3.1.13
411 rated continuous thermal current
412 I
CMF,cth
413 value of the current which can be permitted to flow continuously in the primary winding, the secondary
414 winding being connected to the rated burden, without the temperature rise exceeding the values
415 specified
416 [SOURCE: IEC 60050-321:1986, 321-02-25]
417 3.1.14
418 rated continuous thermal current EMF
419 I
EMF,cth
420 value of current which can be permitted to flow continuously into the primary input of EMF
421 3.1.15
422 rated dynamic current,
423 I
CMF,dyn
424 < energy measurement system> peak value of the primary current which a current sensor will withstand
425 without being damaged
426 3.1.16
427 rated dynamic current EMF
428 I
EMF,dyn
429 peak value of the primary current which a EMF will withstand without being damaged
430 3.1.17
431 rated output power
432 value of the apparent power (in volt-amperes) at a specified
433 displacement power factor which the transformer is intended to supply to the secondary circuit at the
434 rated secondary voltage or current and with rated burden connected to it
435 3.1.18
436 rated primary current of t
...