Current and voltage sensors or detectors, to be used for fault passage indication purposes - Part 1: General principles and requirements

IEC 62689-1:2016 defines the minimum requirements (therefore performances) and consequent classification and tests (with the exception of functional and communication ones) for fault passage indicators (FPIs) and distribution substation units (DSUs) (including their current and/or voltage sensors), which are, respectively, a device or a device/combination of devices and/or functions able to detect faults and provide indications about their localization.

Capteurs ou détecteurs de courant et de tension, à utiliser pour indiquer le passage d'un courant de défaut - Partie 1: Exigences et principes généraux

L'IEC 62689-1:2016 définit les exigences (et donc les performances) minimales, ainsi que les classifications des essais qui en découlent (à l'exception des essais fonctionnels et de communications) pour les indicateurs de passage de courant de défaut (FPI) et les unités de poste de distribution (DSU) (y compris pour leurs capteurs de courant et/ou de tension) qui sont respectivement matérialisés par un dispositif ou un dispositif/une combinaison de dispositifs et/ou de fonctions pouvant détecter des défauts et les localiser.

General Information

Status
Published
Publication Date
11-May-2016
Current Stage
PPUB - Publication issued
Start Date
12-May-2016
Completion Date
12-May-2016
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IEC 62689-1
Edition 1.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Current and voltage sensors or detectors, to be used for fault passage
indication purposes –
Part 1: General principles and requirements
Capteurs ou détecteurs de courant et de tension, à utiliser pour indiquer le
passage d'un courant de défaut –
Partie 1: Exigences et principes généraux
IEC 62689-1:2016-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62689-1
Edition 1.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Current and voltage sensors or detectors, to be used for fault passage
indication purposes –
Part 1: General principles and requirements
Capteurs ou détecteurs de courant et de tension, à utiliser pour indiquer le
passage d'un courant de défaut –
Partie 1: Exigences et principes généraux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-3361-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62689-1:2016 © IEC 2016
CONTENTS

FOREWORD ......................................................................................................................... 7

INTRODUCTION ................................................................................................................... 9

1 Scope .......................................................................................................................... 11

2 Normative references................................................................................................... 11

3 Terms, definitions, abbreviations and symbols .............................................................. 13

3.1 General terms and definitions .............................................................................. 14

3.2 Terms and definitions related to neutral point treatment ....................................... 18

3.3 Terms and definitions related to dielectrics ratings ............................................... 19

3.4 Terms and definitions related to current ratings .................................................... 21

3.5 Terms and definitions related to other ratings ...................................................... 21

3.6 Abbreviations and symbols .................................................................................. 21

4 Choice of FPI requirements according to network and fault type ................................... 22

5 Overview of applications .............................................................................................. 22

5.1 General description ............................................................................................. 22

5.2 Application with regard to installation type ........................................................... 24

5.2.1 Overhead line applications ........................................................................... 24

5.2.2 Underground cable application ..................................................................... 24

5.3 Application with regard to fault detection capability .............................................. 24

5.3.1 Single phase application .............................................................................. 24

5.3.2 Three-phase application ............................................................................... 24

5.3.3 Residual current application ......................................................................... 25

5.3.4 Three-phase and residual current application ................................................ 25

6 Application with regard to network configuration and operation ..................................... 25

7 FPI’s/DSU’s main elements .......................................................................................... 25

7.1 General ............................................................................................................... 25

7.2 Current and voltage sensors ................................................................................ 25

7.2.1 General ....................................................................................................... 25

7.2.2 Accuracy for current (and voltage) sensors ................................................... 26

7.3 Transmission of signals between sensors and CPIU ............................................. 26

7.4 Conditioning, processing and indicating unit (CPIU) ............................................. 26

7.5 Human–Machine Interface (HMI) ......................................................................... 26

7.5.1 General ....................................................................................................... 26

7.5.2 Local display ................................................................................................ 27

7.5.3 Remote display ............................................................................................ 27

8 FPI/DSU classification and usage classes (data model and profile definition,

testing) ........................................................................................................................ 27

8.1 General ............................................................................................................... 27

8.2 Integration of FPIs in the electrical grid ................................................................ 28

8.2.1 FPI for local indication of fault detection ....................................................... 28

8.2.2 FPIs for remote indication of fault detection .................................................. 29

8.2.3 DSUs fully integrated in network operation system (SCADA) ......................... 29

8.3 Information from FPIs/DSUs ................................................................................ 29

8.3.1 General ....................................................................................................... 29

8.3.2 Information from FPIs for local indication of fault detection ............................ 30

8.3.3 Information from FPIs for remote indication of fault detection ........................ 30

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IEC 62689-1:2016 © IEC 2016 – 3 –
8.3.4 Information from DSUs fully integrated in network operation system

(SCADA) ...................................................................................................... 31

8.4 FPI/DSU classification through performance/capabilities classes .......................... 32

8.4.1 General ....................................................................................................... 32

8.4.2 Fault detection capability class ..................................................................... 34

8.4.3 Communication capability class .................................................................... 34

8.4.4 Power supply class ...................................................................................... 35

8.4.5 FPI/DSU additional optional feature classes not strictly related to pure

fault detection .............................................................................................. 35

8.4.6 Complete FPI/DSU classification through performance/capability

classes ........................................................................................................ 36

9 Service conditions ....................................................................................................... 41

9.1 General ............................................................................................................... 41

9.2 Normal service conditions ................................................................................... 41

9.2.1 Auxiliary power supply ................................................................................. 41

9.2.2 Ambient air temperature ............................................................................... 41

9.2.3 Altitude ........................................................................................................ 42

9.2.4 Vibrations or earth tremors ........................................................................... 42

9.2.5 Other service conditions for indoor FPI/DSU ................................................. 42

9.2.6 Other service conditions for outdoor FPI/DSUs ............................................. 42

9.3 Special service conditions ................................................................................... 43

9.3.1 General ....................................................................................................... 43

9.3.2 Altitude ........................................................................................................ 43

9.3.3 Vibration or earthquakes .............................................................................. 43

10 Ratings ........................................................................................................................ 43

10.1 General ............................................................................................................... 43

10.2 Rated primary voltage ......................................................................................... 44

10.3 Standard values of rated voltage factor ................................................................ 44

10.3.1 Earthed electronic voltage transformers ........................................................ 44

10.3.2 Unearthed electronic voltage transformers .................................................... 44

10.4 Highest insulation levels for FPI primary terminals ............................................... 44

10.4.1 General ....................................................................................................... 44

10.4.2 Other requirements for FPI/DSU primary terminals insulation ........................ 46

10.4.3 Insulation requirements for low voltage components (terminals of

secondary voltage sensors) .......................................................................... 46

10.5 Rated frequency range ........................................................................................ 48

10.6 Rated primary current .......................................................................................... 48

10.7 Rated short-time thermal current ......................................................................... 48

10.8 Rated dynamic current ........................................................................................ 48

10.9 Rated supply voltage of auxiliary and control circuits ........................................... 48

10.10 Rated supply frequency of auxiliary circuits ......................................................... 49

11 Design and construction .............................................................................................. 49

11.1 General ............................................................................................................... 49

11.2 Requirement for insulation material in equipment ................................................. 49

11.3 Requirements for temperature rise of sensor parts and components ..................... 49

11.3.1 General ....................................................................................................... 49

11.3.2 Influence of altitude on temperature-rise ....................................................... 50

11.4 Earthing of equipment ......................................................................................... 51

11.4.1 General ....................................................................................................... 51

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– 4 – IEC 62689-1:2016 © IEC 2016

11.4.2 Electrical continuity ...................................................................................... 51

11.5 Maximum mass for clip on installation .................................................................. 51

11.6 Marking and additional information ...................................................................... 52

11.6.1 Rating plate markings .................................................................................. 52

11.6.2 Terminal markings ....................................................................................... 52

11.7 Degree of protection by enclosures ...................................................................... 53

11.7.1 General ....................................................................................................... 53

11.7.2 Protection of persons against access to hazardous parts and protection

of the equipment against ingress of solid foreign objects ............................... 53

11.7.3 Protection against ingress of water ............................................................... 53

11.7.4 Recommended IP degrees: indoor installation .............................................. 54

11.7.5 Recommended IP degrees: outdoor installation ............................................ 54

11.7.6 Protection of equipment against mechanical impact under normal

service conditions ........................................................................................ 54

11.8 Creepage distances ............................................................................................ 54

11.8.1 Pollution ...................................................................................................... 54

11.8.2 Corrections .................................................................................................. 55

11.9 Flammability ....................................................................................................... 55

11.10 Environmental compatibility ................................................................................. 55

11.10.1 General ....................................................................................................... 55

11.10.2 Requirements for electromagnetic compatibility (EMC) .................................. 56

11.10.3 Requirements for climatic immunity .............................................................. 58

11.10.4 Mechanical requirements ............................................................................. 59

11.11 Mechanical stresses on terminals (optional) ......................................................... 59

12 Tests ........................................................................................................................... 59

12.1 General ............................................................................................................... 59

12.1.1 Classification of tests ................................................................................... 59

12.1.2 List of tests .................................................................................................. 60

12.2 Type tests ........................................................................................................... 60

12.2.1 General provisions for type tests .................................................................. 60

12.2.2 Information for identification of specimen ...................................................... 61

12.2.3 Information to be included in type test reports ............................................... 61

12.2.4 Short time current test .................................................................................. 62

12.2.5 Power-frequency voltage withstand tests on primary terminals ...................... 62

12.2.6 Temperature-rise test ................................................................................... 63

12.2.7 Lightning impulse voltage test on primary terminals ...................................... 63

12.2.8 Wet test for outdoor type transformers .......................................................... 64

12.2.9 Low-voltage component voltage withstand test ............................................. 64

12.2.10 Electromagnetic Compatibility (EMC) tests. .................................................. 64

12.2.11 Partial discharge test on primary terminals ................................................... 65

12.2.12 Verification of markings ................................................................................ 66

12.2.13 Verification of the degree of protection by enclosures ................................... 66

12.2.14 Functional tests ........................................................................................... 66

12.2.15 Climatic tests ............................................................................................... 66

12.2.16 Mechanical tests .......................................................................................... 67

12.3 Routine tests ....................................................................................................... 67

12.3.1 General ....................................................................................................... 67

12.3.2 Power-frequency voltage withstand test for primary terminals ........................ 67

12.3.3 Power-frequency voltage withstand test for low-voltage components ............. 67

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IEC 62689-1:2016 © IEC 2016 – 5 –

12.3.4 Partial discharge test on primary terminals ................................................... 67

12.3.5 Functional tests ........................................................................................... 67

12.3.6 Verification of markings ................................................................................ 67

12.4 Special tests ....................................................................................................... 67

12.4.1 General ....................................................................................................... 67

12.4.2 Chopped impulse voltage withstand test on primary terminals ....................... 67

12.4.3 Fire hazard test ............................................................................................ 68

12.4.4 Ageing test .................................................................................................. 68

12.4.5 Mechanical stresses on terminals test .......................................................... 68

Annex A (informative) Example of guide for the selection of equipment according to

use – information to be provided with inquiries, tenders, and orders ..................................... 69

Annex B (informative) Examples of possible FPI/DSU architectures .................................... 70

Annex C (informative) Examples of FPI/DSU regarding communication capabilities ............. 75

Bibliography ....................................................................................................................... 83

Figure 1 – General architecture of an FPI ............................................................................ 10

Figure 2 – Possible architecture of a typical FPI .................................................................. 22

Figure 3 – Possible detailed architecture of a DSU in a wide extended configuration ............ 23

Figure 4 – Example of possible coexistence of different performance level FPIs/DSUs

on the same MV feeder ....................................................................................................... 28

Figure 5 – Example of possible ports to consider concerning insulation requirements

for LV components .............................................................................................................. 47

Figure 6 – Altitude correction factor for the temperature rise ................................................ 51

Figure B.1 – Example of a F5NC(or C) – T2 – P3 – 3 class FPI for underground cable

application .......................................................................................................................... 70

Figure B.2 – Example of a F3NC(or C) – T1 – P2 – max 2 class FPI for underground

cable application ................................................................................................................. 71

Figure B.3 – Example of an F6NC –T4 – P3 – 4 class DSU for underground cable

application .......................................................................................................................... 72

Figure B.4 – Example of an F6NC –T4 – P3 – 4 class DSU for underground cable

application .......................................................................................................................... 73

Figure B.5 – Example of a F5C(or NC) – T2 – P4 – 3 class FPI for underground cable

application .......................................................................................................................... 74

Figure C.1 – Example of an F1 (F2/F3) C (NC) – T2 – P2 – 1 (2) class FPI for outdoor

installation on overhead conductors .................................................................................... 75

Figure C.2 – Examples of an F4 (F5/F6) C (NC) – T2 – P3 (P4) – 3 (4) class DSU for

underground cable application ............................................................................................ 77

Figure C.3 – Examples of an F4 (F5/F6) C (NC) – T2 – P3 (P4) – 4 class DSU for

underground cable application ............................................................................................ 79

Figure C.4 – Examples of a F4 (F5/F6) C (NC) – T3 (T4) – P3 (P4) – 3(4) class DSU

for underground cable application ....................................................................................... 82

Table 1 – FPI/DSU classification principles through classes to be used for data model

and profile definitions and testing ........................................................................................ 33

Table 2 – FPI fault detection capability classes to be used for data model and profile

definition and testing ........................................................................................................... 34

Table 3 – Communication capability to be used for data model and profile definition

and testing ......................................................................................................................... 35

Table 4 – Power supply class .............................................................................................. 35

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– 6 – IEC 62689-1:2016 © IEC 2016

Table 5 – Additional optional feature classes (not strictly related to pure fault

detection) ........................................................................................................................... 35

Table 6 – FPIs usage classes: fault detection capabilities and communication

capabilities ......................................................................................................................... 37

Table 7 – FPI/DSU minimum and maximum temperatures .................................................... 41

Table 8 – Standard values of rated voltage factor (k ) ......................................................... 44

Table 9 – Rated insulation levels ......................................................................................... 45

Table 10 – Partial discharge test voltages and permissible levels ......................................... 46

Table 11 – Rated values of auxiliary supply voltage – d.c. voltage ....................................... 48

Table 12 – Rated values of auxiliary supply voltage – a.c. voltage ....................................... 49

Table 13 – Limits of temperature rise for various parts, materials and dielectrics of

sensors .............
...

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