1、 IEC 60871-1 Edition 4.0 2014-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V Part 1: General Condensateurs shunt pour rseaux courant alternatif de tension assigne suprieure 1 000 V Partie 1: Gnralits IEC 60871-1:2014-05(en-
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19、store.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60871-1 Edition 4.0 2014-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V Part 1:
20、 General Condensateurs shunt pour rseaux courant alternatif de tension assigne suprieure 1 000 V Partie 1: Gnralits INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 29.240.99; 31.060.70 PRICE CODE CODE PRIX ISBN 978-2-8322-1580-7 Registered trademark of the
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22、e 2 IEC 60871-1:2014 IEC 2014 CONTENTS FOREWORD . 6 1 Scope 8 2 Normative references 9 3 Terms and definitions 9 4 Service conditions . 12 4.1 Normal service conditions . 12 4.2 Unusual service conditions . 13 5 Quality requirements and tests 13 5.1 General . 13 5.2 Test conditions . 13 6 Classifica
23、tion of tests. 13 6.1 General . 13 6.2 Routine tests. 13 6.3 Type tests . 14 6.4 Acceptance tests 14 6.5 Endurance test (special test) . 14 7 Capacitance measurement (routine test) 14 7.1 Measuring procedure 14 7.2 Capacitance tolerances . 15 8 Measurement of the tangent of the loss angle (tan ) of
24、the capacitor (routine test) . 15 8.1 Measuring procedure 15 8.2 Loss requirements 16 8.3 Losses in external fuses . 16 9 Voltage test between terminals (routine test) . 16 9.1 General . 16 9.2 AC test . 16 9.3 DC test . 16 10 AC voltage test between terminals and container (routine test) 16 11 Test
25、 of internal discharge device (routine test) 17 12 Sealing test (routine test) 17 13 Thermal stability test (type test) . 17 13.1 General . 17 13.2 Measuring procedure 17 14 Measurement of the tangent of the loss angle (tan ) of the capacitor at elevated temperature (type test) 18 14.1 Measuring pro
26、cedure 18 14.2 Requirements . 18 15 Voltage tests between terminals and container (type tests) 19 15.1 AC voltage test between terminals and container 19 15.2 Lightning impulse test between terminals and container 19 16 Overvoltage test (type test) . 20 16.1 General . 20 16.2 Conditioning of the sam
27、ple before the test 20 16.3 Test procedure 20 IEC 60871-1:2014 IEC 2014 3 16.4 Acceptance criteria . 21 16.5 Validity of test . 21 16.5.1 General . 21 16.5.2 Element design 21 16.5.3 Test unit design . 21 16.5.4 Waveform of overvoltage . 21 17 Short-circuit discharge test (type test) . 22 18 Insulat
28、ion levels . 22 18.1 Standard insulation values 22 18.2 General requirements . 23 18.2.1 General . 23 18.2.2 Adjacent insulating components and equipment . 23 18.2.3 Capacitors insulated from ground 23 18.2.4 Capacitors with neutral connected to ground . 23 18.3 Test between terminals and container
29、of capacitor units . 24 18.4 Capacitors in single-phase systems 24 19 Overloads Maximum permissible voltage 27 19.1 Long duration voltages 27 19.2 Switching overvoltages . 27 20 Overloads Maximum permissible current. 27 21 Safety requirements for discharge devices 28 22 Safety requirements for conta
30、iner connections 28 23 Safety requirements for protection of the environment . 28 24 Other safety requirements . 28 25 Markings of the capacitor unit 29 25.1 Rating plate 29 25.2 Standardized connection symbols . 29 25.3 Warning plate . 29 26 Markings of the capacitor bank 30 26.1 Instruction sheet
31、or rating plate . 30 26.2 Warning plate . 30 27 Guide for installation and operation . 30 27.1 General . 30 27.2 Choice of the rated voltage . 30 27.3 Operating temperature 31 27.3.1 General . 31 27.3.2 Installation . 31 27.3.3 High ambient air temperature. 32 27.4 Special service conditions . 32 27
32、5 Overvoltages 32 27.5.1 General . 32 27.5.2 Restriking of switches 33 27.5.3 Lightning . 33 27.5.4 Motor self-excitation 33 27.5.5 Star-delta starting 33 27.5.6 Capacitor unit selection . 33 27.6 Overload currents . 33 4 IEC 60871-1:2014 IEC 2014 27.6.1 Continuous overcurrents 33 27.6.2 Transient
33、overcurrents . 34 27.7 Switching and protective devices 34 27.7.1 Withstand requirements . 34 27.7.2 Restrike-free circuit-breakers . 35 27.7.3 Relay settings 35 27.8 Choice of insulation levels 36 27.8.1 General . 36 27.8.2 Altitudes exceeding 1 000 m 36 27.8.3 Influence of the capacitor itself 36
34、27.8.4 Overhead ground wires 38 27.9 Choice of creepage distances and air clearance . 38 27.9.1 Creepage distance . 38 27.9.2 Air clearances 39 27.10 Capacitors connected to systems with audio-frequency remote control . 41 Annex A (normative) Precautions to be taken to avoid pollution of the environ
35、ment by polychlorinated biphenyls 42 Annex B (normative) Additional definitions, requirements and tests for power filter capacitors . 43 Annex C (normative) Test requirements and application guide for external fuses and units to be externally fused . 45 C.1 General . 45 C.2 Terms and definitions 45
36、C.3 Performance requirements 45 C.4 Tests 45 C.4.1 Tests on fuses . 45 C.4.2 Type tests on capacitor containers 45 C.5 Guide for coordination of fuse protection . 46 C.5.1 General . 46 C.5.2 Protection sequence 46 C.6 Choice of fuses . 46 C.6.1 General . 46 C.6.2 Non current-limiting fuses 47 C.6.3
37、Current-limiting fuses. 47 C.7 Information needed by the user of the fuses 47 Annex D (informative) Formulae for capacitors and installations 48 D.1 Computation of the output of three-phase capacitors from three single-phase capacitance measurements . 48 D.2 Resonant frequency 48 D.3 Voltage increas
38、e . 48 D.4 Inrush transient current . 49 D.4.1 Switching in of single capacitor bank . 49 D.4.2 Switching on of a bank in parallel with energized bank(s) 49 D.5 Discharge resistance in single-phase unit . 49 D.6 Discharge time to 10 % of rated voltage 49 Annex E (informative) Capacitor bank fusing a
39、nd unit arrangement 51 E.1 General . 51 E.2 Internally fused capacitor bank . 51 E.3 Externally fused capacitor bank 51 IEC 60871-1:2014 IEC 2014 5 E.4 Fuseless capacitor bank . 51 Bibliography 54 Figure 1 Time and amplitude limits for an overvoltage period . 22 Figure 2 Bank isolated from ground .
40、37 Figure 3 Bank isolated from ground (containers connected to ground) 37 Figure 4 Bank connected to ground 38 Figure 5 Air clearance versus AC withstand . 41 Figure E.1 Typical connections between capacitor units . 52 Figure E.2 Typical connections between elements within a capacitor unit 53 Table
41、1 Letter symbols for upper limit of temperature range . 12 Table 2 Ambient air temperature for the thermal stability test . 18 Table 3 Standard insulation levels for range I (1 kV 245 kV) 26 Table 5 Admissible voltage levels in service 27 Table 6 Insulation requirements . 36 Table 7 Specific creepag
42、e distances 38 Table 8 Correlation between standard lightning impulse withstand voltages and minimum air clearances (Table A.1 from IEC 60071-2:1996) . 40 6 IEC 60871-1:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SHUNT CAPACITORS FOR AC POWER SYSTEMS HAVING A RATED VOLTAGE ABOVE 1 000
43、V Part 1: General FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning stan
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