prEN IEC 61869-13:2019

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Merilni transformatorji - 13. del: Samostojni koncentratorInstrument Transformers - Part 13: Standalone Merging Unit17.220.20Measurement of electrical and magnetic quantitiesICS:Ta slovenski standard je istoveten z:prEN IEC 61869-13:2019oSIST prEN 61869-13:2019en01-april-2019oSIST prEN 61869-13:2019SLOVENSKI

IEC TC 38 : INSTRUMENT TRANSFORMERS SECRETARIAT: SECRETARY: Italy Mr Filippo Frugoni OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD: TC 13,TC 57,TC 85,TC 95

Other TC/SCs are requested to indicate their interest, if any, in this CDV to the secretary. FUNCTIONS CONCERNED:

The attention of IEC National Committees, members of CENELEC, is drawn to the fact that this Committee Draft for Vote (CDV) is submitted for parallel voting.

The CENELEC members are invited to vote through the CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes. Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.

Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC.

2 FOREWORD ........................................................................................................................... 6 3 INTRODUCTION ..................................................................................................................... 9 4 1 Scope ............................................................................................................................ 10 5 2 Normative reference ...................................................................................................... 11 6 3 Terms and definitions .................................................................................................... 13 7 3.1 General terms and definitions ............................................................................... 13 8 3.2 Terms and definitions related to dielectric ratings and voltages ............................. 14 9 3.3 Terms and definitions related to current ratings .................................................... 14 10 3.4 Terms and definitions related to accuracy ............................................................. 15 11 3.7 Index of abbreviations and symbols ...................................................................... 16 12 4 Normal and special service conditions ........................................................................... 16 13 4.3 Special service conditions ..................................................................................... 16 14 4.3.3 Ambient temperature............................................................................................. 16 15 5 Ratings .......................................................................................................................... 16 16 5.3 Rated insulation levels .......................................................................................... 16 17 5.3.2 Rated primary terminal insulation level .................................................................. 16 18 5.3.3 Other requirements for primary terminal insulation ................................................ 16 19 5.3.4 Between-section insulation requirements .............................................................. 17 20 5.3.5 Insulation requirements for secondary terminals ................................................... 17 21 5.3.1301 Insulation requirements for SAMU inputs from instrument transformers ......... 17 22 5.5 Rated output ......................................................................................................... 17 23 5.6 Rated accuracy class ............................................................................................ 17 24 5.6.1301 Accuracy requirements for SAMU IT channels ............................................... 18 25 5.6.1301.1 Standard accuracy classes for SAMU current channels 26 measuring accuracy class designation .................................................................. 18 27 5.6.1301.2 SAMU current channels with protection accuracy class designation ................ 20 28 5.6.1301.3 Standard accuracy classes for SAMU current channels with protection 29 accuracy class designation ................................................................................... 21 30 5.6.1302 Standard accuracy classes for SAMU voltage channels ................................. 22 31 5.6.1303 SAMU inputs from current transformers ......................................................... 22 32 5.6.1304 SAMU inputs from voltage transformers ......................................................... 23 33 5.6.1305 SAMU settings ............................................................................................... 23 34 6 Design and construction ................................................................................................ 23 35 6.11 Electromagnetic compatibility (EMC) ..................................................................... 23 36 6.11.3

Requirements for immunity .................................................................................. 23 37 6.11.3.601 General ....................................................................................... 23 38 6.11.3.608 Electrical fast transient burst ....................................................... 25 39 6.11.3.609 Oscillatory wave immunity ........................................................... 25 40 6.11.3.1301 Voltage ripple on DC power supply ............................................................... 25 41 6.11.3.1302 Gradual shutdown and start-up test .............................................................. 25 42 6.11.4 Requirement for transmitted overvoltages ............................................................. 25 43 6.11.601 Emission requirements .................................................................................. 25 44 6.13 Markings ............................................................................................................... 25 45 6.13.1301 Terminal markings ...................................................................... 26 46 6.13.1302 Rating plate markings ................................................................. 26 47 6.13.1303 Marking durability ........................................................................ 29 48 oSIST prEN 61869-13:2019

IEC CDV 61869-13 © IEC 2017 – 3 – 38/599/CDV 6.607 Vibrations ............................................................................................................. 29 49 7 Tests ............................................................................................................................. 30 50 7.1 General ................................................................................................................. 30 51 7.1.2 List of tests ........................................................................................................... 30 52 7.2 Type tests ............................................................................................................. 30 53 7.2.1 General ......................................................................................................... 30 54 7.2.2 Temperature-rise test .................................................................................... 31 55 7.2.3 Impulse voltage withstand test on primary terminals ...................................... 31 56 7.2.4 Wet test for outdoor type transformers ........................................................... 31 57 7.2.5 Electromagnetic compatibility tests ................................................................ 31 58 7.2.5.2.601 General ....................................................................................... 31 59 7.2.5.2.603 Harmonic and interharmonic disturbance test .............................. 31 60 7.2.5.2.604 Slow voltage variation test ............................................................................. 32 61 7.2.5.2.605 Voltage dips and short interruption test .......................................................... 32 62 7.2.5.2.606 Surge immunity test ....................................................................................... 32 63 7.2.5.2.607 Conducted immunity tests (150 kHz to 80 MHz) ............................................. 32 64 7.2.5.2.608 Conducted immunity tests (0 Hz to 150 kHz) .................................................. 32 65 7.2.5.2.609 Electronic fast transient/burst test .................................................................. 33 66 7.2.5.2.610 Damped oscillatory wave immunity test .......................................................... 33 67 7.2.5.2.611 Electrostatic discharge test ............................................................................ 33 68 7.2.5.2.612 Power-frequency magnetic field immunity test ................................................ 33 69 7.2.5.2.613 Pulse magnetic field immunity test ................................................................. 33 70 7.2.5.2.614 Damped oscillatory magnetic field immunity test ............................................ 33 71 7.2.5.2.615 Radiated, radiofrequency, electromagnetic field immunity test ....................... 33 72 7.2.5.2.1301 Voltage ripple on DC power supply .............................................................. 34 73 7.2.5.2.1302 Gradual shutdown ........................................................................................ 34 74 7.2.5.601 EMC emission tests ....................................................................................... 34 75 7.2.6 Test for accuracy ........................................................................................... 34 76 7.2.6.601 General ......................................................................................................... 34 77 7.2.6.1301 Test for error at limiting conditions for protection rated current channels ......... 35 78 7.2.6.1302 High-pass filter cut-off frequency measurement .............................................. 36 79 7.2.8 Enclosure tightness test at ambient temperature ............................................ 36 80 7.2.9 Pressure test for the enclosure ...................................................................... 36 81 7.2.601 Low-voltage component voltage withstand test .............................................. 36 82 7.2.601.2 Application of the test voltage ........................................................................... 36 83 7.2.601.3 Power-frequency voltage withstand test ............................................................ 37 84 7.2.601.4 Impulse voltage withstand test .......................................................................... 37 85 7.2.1301 Climatic environmental requirements ............................................................. 37 86 7.2.1301.1 Dry-heat test – Operational ............................................................................. 37 87 7.2.1301.2 Cold test – Operational ................................................................................... 38 88 7.2.1301.3 Dry-heat test at maximum storage temperature ............................................... 38 89 7.2.1301.4 Cold test at minimum storage temperature ...................................................... 38 90 7.2.1301.5 Damp-heat test ............................................................................................... 38 91 7.2.1301.6 Cyclic temperature with humidity ..................................................................... 38 92 7.2.1302 Mechanical tests ................................................................................................ 38 93 7.2.1302.1 Vibration ......................................................................................................... 38 94 7.2.1302.2 Shock ............................................................................................................. 38 95 7.2.1302.3 Bump .............................................................................................................. 38 96 7.2.1302.4 Seismic ........................................................................................................... 38 97 oSIST prEN 61869-13:2019

38/599/CDV – 4 – IEC CDV 61869-13 © IEC 2018 7.3 Routine tests......................................................................................................... 38 98 7.3.1 Power-frequency voltage withstand test on primary terminals ........................ 38 99 7.3.2 Partial discharge measurement ...................................................................... 38 100 7.3.3 Power-frequency voltage withstand test between sections ............................. 39 101 7.3.4 Power-frequency voltage withstand test on secondary terminals .................... 39 102 7.3.5 Test for accuracy ........................................................................................... 39 103 7.3.6 Verification of markings ................................................................................. 39 104 7.3.601 Power-frequency voltage withstand test for low-voltage components ................... 39 105 7.4 Special tests ......................................................................................................... 39 106 7.4.601 Vibration tests ..................................................................................................... 39 107 7.4.601.1 Vibrations test for secondary parts .................................................................... 39 108 7.4.601.2 Vibration test for primary parts .......................................................................... 39 109 7.4.601.2.1 Vibration test for primary parts during short-time current ................................ 39 110 7.5 Sample tests ......................................................................................................... 39 111 8 Rules for transport, storage, erection, operation and maintenance ................................. 40 112 9 Safety ............................................................................................................................ 40 113 9.1301 General ................................................................................................................. 40 114 9.1302 Product safety requirements ................................................................................. 40 115 Annex 13A (informative)

Measurement chain accuracy class considerations ........................ 41 116 Annex 13B (informative)

surge 117 voltage in gas-insulated switchgear ............................................................................... 43 118 Annex 13C (normative)

Low power instrument transformer inputs ........................................ 54 119 13C.1 Introduction ........................................................................................................... 54 120 13C.2 Accuracy class ...................................................................................................... 54 121 13C.3 Rated input voltage ............................................................................................... 54 122 13C.4 LPIT input insulation requirements ........................................................................ 54 123 13C.5 LPIT input connectors ........................................................................................... 54 124 13C.6 LPIT Input impedance ........................................................................................... 55 125 13C.7 Input topology ....................................................................................................... 55 126 13C.8 Auxiliary power supply output ............................................................................... 55 127 13C.9 LPIT specific SAMU Settings ................................................................................ 55 128 13C.10 Testing ................................................................................................................. 56 129 Bibliography .......................................................................................................................... 57 130

131 Figure 1301 SAMU position in relation to other devices in the functional chain ....................... 9 132 Figure 1302 – Stand-alone merging unit (concept example) .................................................. 10 133 Figure 1303 – Stand-alone merging unit application example ................................................ 11 134 Figure 1304 – Specified input current time constant TI .......................................................... 15 135 Figure 1305 – Dynamic range concept example .................................................................... 20 136 Figure 1306 – SAMU ports subjected to EMC tests ............................................................... 31 137 Figure 1307 – C-O-C-O duty cycle ........................................................................................ 35 138 Figure 13A.1 – SAMU application example ........................................................................... 41 139 Figure 13B.1 – constructional example of GIS with typical surge voltage sources ................. 43 140 Figure 13B.2 – Measured 550kV GIS construction ................................................................ 44 141 Figure 13B.3 – Measurement results showing a switching surge peak

voltage 142 magnitude caused by the DS operation in Figure 13B.2 ........................................................ 45 143 Figure 13B.4 – Measured 275kV GIS construction ................................................................ 46 144 oSIST prEN 61869-13:2019

IEC CDV 61869-13 © IEC 2017 – 5 – 38/599/CDV Figure 13B.5 – Switching and lightning surge voltage waveforms .......................................... 47 145 Figure 13B.6 – Switching surge voltage measurement setup on

a 550kV GIS 146 with/without an insulating flange surge absorber ................................................................... 48 147 Figure 13B.7 – Switching surge voltage measurement results

when the DS was 148 operated with/without the surge absorber .............................................................................. 49 149 Figure 13B.8 – CT secondary circuit configuration for the 500 kV GIS .................................. 50 150 Figure 13B.9 – DS control circuit configuration for the 500 kV GIS test ................................. 50 151 Figure 13B.10 – Waveforms of switching surge voltage at measured point I (see Table 152 13B.3) ................................................................................................................................... 51 153 Figure 13B.11 – Block diagram of the electronic VT

with amplifier tested in the 500 kV 154 GIS system ........................................................................................................................... 52 155 Figure 13B.12 – Lightning surge voltage as a function

of surge absorbing capacitor 156 value..................................................................................................................................... 52 157 Figure 13B.13 – Lightning surge voltage as a function of coaxial cable length ...................... 53 158

159 Table 1301 – Insulation requirements for SAMU inputs ......................................................... 17 160 Table 1302 – Limits of current error and phase error for

SAMU measuring accuracy 161 current channels ................................................................................................................... 19 162 Table 1303 – Limits of current errors for SAMU TPS class rated protection accuracy 163 current channels ................................................................................................................... 21 164 Table 1304 – Limits of voltage error and phase error for SAMU voltage channels ................. 22 165 Table 1305 – SAMU TCTR class settings .............................................................................. 23 166 Table 1306 – SAMU TVTR class settings .............................................................................. 23 167 Table 1307 – Immunity requirements and tests ..................................................................... 24 168 Table 1308 – Acceptance criteria for EMC immunity tests ..................................................... 25 169 Table 1309 – SAMU rating plate markings ............................................................................ 27 170 Table 1310 – Ratings exposed through IEC 61850-7-4 ......................................................... 29 171 Table 1311 – Mechanical vibration tests applied to the enclosure port .................................. 30 172 Table 10 – List of tests.......................................................................................................... 30 173 Table 13A.1 – Combined accuracy class table ...................................................................... 41 174 Table 13B.1 – Measurement results showing switching and lightning

surge voltage 175 recorded for the setup in Figure 13B.4 .................................................................................. 46 176 Table 13B.2 – Measurement results of switching surge voltage on CT secondary circuit ....... 50 177 Table 13B.3 – Measurement results showing the switching

surge voltage coupling to 178 the DS control circuit ............................................................................................................ 50 179 Table 13C1 – ITRat setting units ........................................................................................... 55 180

38/599/CDV – 6 – IEC CDV 61869-13 © IEC 2018 INTERNATIONAL ELECTROTECHNICAL COMMISSION 183 ____________ 184

189 FOREWORD 190 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising 191 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote 192 international co-operation on all questions concerning standardization in the electrical and electronic fields. To 193 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, 194 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC 195 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested 196 in the subject dealt with may participate in this preparatory work. International, governmental and non-197 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely 198 with the International Organization for Standardization (ISO) in accordance with conditions determined by 199 agreement between the two organizations. 200 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international 201 consensus of opinion on the relevant subjects since each technical committee has representation from all 202 interested IEC National Committees.

203 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National 204 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC 205 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any 206 misinterpretation by any end user. 207 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications 208 transparently to the maximum extent possible in their national and regional publications. Any divergence 209 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in 210 the latter. 211 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity 212 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any 213 services carried out by independent certification bodies. 214 6) All users should ensure that they have the latest edition of this publication. 215 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and 216 members of its technical committees and IEC National Committees for any personal injury, property damage or 217 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and 218 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC 219 Publications.

220 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is 221 indispensable for the correct application of this publication. 222 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of 223 patent rights. IEC shall not be held responsible for identifying any or all such patent rights. 224 International Standard IEC 61869-13 has been prepared by IEC technical committee 38: 225 Instrument transformers. 226 The text of this standard is based on the following documents: 227 FDIS Report on voting 38/XX/FDIS 38/XX/RVD

228 Full information on the voting for the approval of this International Standard can be found in 229 the report on voting indicated in the above table. 230 This document has been drafted in accordance with the ISO/IEC Directives, Part 2. 231 This standard is Part 13 of IEC 61869, published under the general title Instrument 232 transformers. 233 oSIST prEN 61869-13:2019

IEC CDV 61869-13 © IEC 2017 – 7 – 38/599/CDV This document contains specific requirements for a stand-alone merging units having a digital 234 output and is to be used with IEC 61869-9:2016, Digital Interface for instrument transformers, 235 and the relevant specific requirements standard for the instrument transformer concerned. It 236 is also to be read in conjunction with, and is based on, IEC 61869-6:2016, Additional General 237 requirements for low-power instrument transformers, which in turn is based on IEC 61869-238 1:2007, General requirements. 239 This Part 13 follows the structure of IEC 61869-1:2007 and IEC 61869-6:2016 and 240 supplements or modifies its corresponding clauses. 241 When a particular subclause of Part 1 or Part 6 is not mentioned in this Part 13, that 242 subclause applies. When this standard states “addition”, “modification” or “replacement”, the 243 relevant text in Part 1 or Part 6 is to be adapted accordingly. 244 For additional clauses, subclauses, figures, tables, annexes or note, the following numbering 245 system is used: 246 – clauses, subclauses, tables, figures and notes that are numbered starting from 1301 are 247 additional to those in Part 1 and Part 6; 248 – additional annexes are lettered 13A, 13B, etc. 249 An overview of the planned set of standards at the date of publication of this document is 250 given below. The updated list of standards issued by IEC TC 38 is available at the website: 251 www.iec.ch 252 oSIST prEN 61869-13:2019

38/599/CDV – 8 – IEC CDV 61869-13 © IEC 2018 PRODUCT FAMILY STANDARDS PRODUCT STANDARD PRODUCTS OLD STANDARD 61869-1 GENERAL REQUIREMENTS FOR INSTRUMENT TRANSFORMERS

61869-2 ADDITIONAL REQUIREMENTS FOR CURRENT TRANSFORMERS 60044-1 60044-6 61869-3 ADDITIONAL REQUIREMENTS FOR INDUCTIVE VOLTAGE TRANSFORMERS 60044-2 61869-4 ADDITIONAL REQUIREMENTS FOR COMBINED TRANSFORMERS 60044-3 61869-5 ADDITIONAL REQUIREMENTS FOR CAPACITOR VOLTAGE TRANSFORMERS 60044-5 61869-6 ADDITIONAL GENERAL REQUIREMENTS FOR LOW-POWER INSTRUMENT TRANSFORMERS 61869-7 ADDITIONAL REQUIREMENTS FOR ELECTRONIC VOLTAGE TRANSFORMERS 60044-7 61869-8 ADDITIONAL REQUIREMENTS FOR ELECTRONIC CURRENT TRANSFORMERS 60044-8 61869-9 DIGITAL INTERFACE FOR INSTRUMENT TRANSFORMERS 61869-10 ADDITIONAL REQUIREMENTS FOR LOW-POWER PASSIVE CURRENT TRANSFORMERS 61869-11 ADDITIONAL REQUIREMENTS FOR LOW-POWER PASSIVE VOLTAGE TRANSFORMERS 60044-7 61869-12 ADDITIONAL REQUIREMENTS FOR COMBINED ELECTRONIC INSTRUMENT TRANSFORMERS AND COMBINED STAND-ALONE INSTRUMENT TRANSFORMERS