This document is applicable to both self-healing capacitor units and self-healing capacitor banks intended to be used, particularly, for power-factor correction of AC power systems having a rated voltage above 1 000 V and fundamental frequencies of 15 Hz to 60 Hz. The following capacitors are excluded from this document: – shunt power capacitors of the self-healing type for AC systems having a rated voltage up to and including 1 000 V (IEC 60831-1, -2); – shunt power capacitors of the non-self-healing type for AC systems having a rated voltage up to and including 1 000 V (IEC 60931-1, -2 and -3); – shunt capacitors of the non-self-healing type for AC power systems having a rated voltage above 1 000 V (IEC 60871-1, -2, -3 and -4); – capacitors for inductive heat-generating plants operating at frequencies between 40 Hz and 24 000 Hz (IEC 60110-1 and -2); – series capacitors (IEC 60143-1, -2, -3 and -4); – AC motor capacitors (IEC 60252-1 and -2); – coupling capacitors and capacitor dividers (IEC 60358-1, -2, -3, -4); – capacitors for power electronic circuits (IEC 61071); – small AC capacitors to be used for fluorescent and discharge lamps (IEC 61048 and IEC 61049); – capacitors for suppression of radio interference; – capacitors intended to be used in various types of electrical equipment, and thus considered as components; – capacitors intended for use with DC voltage superimposed on the AC voltage. Requirements for accessories such as insulators, switches, instrument transformers and external fuses are given in the relevant IEC standards and are not covered by the scope of this document. The object of this document is to: a) formulate uniform rules regarding performances, testing and rating; b) formulate specific safety rules; c) provide a guide for installation and operation.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 4 Service conditions 4.1 Normal service conditions <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 4.2 Unusual service conditions 5 Quality requirements and tests 5.1 General 5.2 Test conditions Tables Table 1 \u2013 Letter symbols for upper limit of temperature range <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6 Classification of tests 6.1 Routine tests 6.2 Type tests and design tests <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.3 Acceptance tests 7 Capacitance measurement 7.1 Measuring procedure <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.2 Capacitance tolerances 8 Measurement of the tangent of the loss angle (tan \u03b4) of the capacitor 8.1 Measuring procedure 8.2 Loss requirements 9 Voltage tests between terminals 9.1 General for routine test 9.2 AC test <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 9.3 DC test 9.4 Type test 10 Voltage tests between terminals and container 10.1 Routine test <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 10.2 Type test 11 Test of internal discharge device 12 Sealing test <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 13 Thermal stability test (type test) 13.1 General 13.2 Measuring procedure Table 2 \u2013 Ambient air temperature for the thermal stability test <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 14 Measurement of the tangent of the loss angle (tan \u03b4) of the capacitor at elevated temperature (type test) 14.1 Measuring procedure 14.2 Requirements 15 Lightning impulse test between terminals and container (type test) <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 16 Overvoltage test (design test) 16.1 General 16.2 Conditioning of the sample before the test <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 16.3 Test procedure 16.4 Acceptance criteria 16.5 Validity of test 16.5.1 General 16.5.2 Element design 16.5.3 Test unit design <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 16.5.4 Waveform of overvoltage 17 Short-circuit discharge test (type test) Figures Figure 1 \u2013 Time and amplitude limits for an overvoltage period <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 18 Self-healing test (type test) 18.1 General 18.2 Test setup 18.3 Acceptance criteria 19 Destruction test (design test) 19.1 General <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 19.2 Test setup for capacitors without actively monitored safety device (internally protected) 19.3 Acceptance criteria <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 19.4 Test setup for capacitors with actively monitored safety device (externally protected) 19.5 Acceptance criteria 20 Insulation levels 20.1 Standard insulation values <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 20.2 General requirements 20.2.1 General 20.2.2 Adjacent insulating components and equipment 20.2.3 Capacitors insulated from ground <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 20.2.4 Capacitors with neutral connected to ground 20.3 Test between terminals and container of capacitor units 20.4 Capacitors in single-phase systems <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Table 3 \u2013 Standard insulation levels for range I (1 kV < Um \u2264 245 kV) <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table 4 \u2013 Standard insulation levels for range II (Um > 245 kV) <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 21 Overloads \u2013 Maximum permissible voltage 21.1 Long duration voltages 21.2 Switching overvoltages 22 Overloads \u2013 Maximum permissible current Table 5 \u2013 Admissible voltage levels in service <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 23 Safety requirements for discharge devices 24 Safety requirements for container connections 25 Safety requirements for protection of the environment 26 Other safety requirements <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | 27 Markings of the capacitor unit 27.1 Rating plate 27.2 Standardized connection symbols <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 27.3 Warning plate 28 Markings of the capacitor bank 28.1 Instruction sheet or rating plate 28.2 Warning plate 29 Guide for installation and operation 29.1 General <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 29.2 Choice of the rated voltage 29.3 Operating temperature 29.3.1 General <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | 29.3.2 Installation 29.3.3 High ambient air temperature 29.4 Special service conditions <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | 29.5 Overvoltages 29.5.1 General 29.5.2 Restriking of switches 29.5.3 Lightning 29.5.4 Motor self-excitation 29.5.5 Star-delta starting 29.5.6 Capacitor unit selection <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | 29.6 Overload currents 29.6.1 Continuous overcurrents 29.6.2 Transient overcurrents 29.7 Switching and protective devices 29.7.1 Withstand requirements <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | 29.7.2 Restrike-free circuit-breakers 29.7.3 Relay settings <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | 29.8 Choice of insulation levels 29.8.1 General 29.8.2 Altitudes exceeding 1 000 m 29.8.3 Influence of the capacitor itself Table 6 \u2013 Insulation requirements <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Figure 2 \u2013 Bank isolated from ground Figure 3 \u2013 Bank isolated from ground (containers connected to ground) <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | 29.8.4 Overhead ground wires 29.9 Choice of creepage distances and air clearance 29.9.1 Creepage distance Figure 4 \u2013 Bank connected to ground Table 7 \u2013 Specific creepage distances <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | 29.9.2 Air clearances <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Table 8 \u2013 Correlation between standard lightning impulse withstand voltages and minimum air clearances (Table A.1 from IEC 60071-2:1996) <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | 29.10 Capacitors connected to systems with audio-frequency remote control Figure 5 \u2013 Air clearance versus AC withstand <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Annex A (normative)Requirements regarding comparable element designand test unit design A.1 Test element design criteria A.2 Test unit design <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Annex B (informative)Self-healing breakdown test equipment that may be used Figure B.1 \u2013 Example of self-healing detection equipment <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Annex C (normative)Test requirements and application guide forexternal fuses and units to be externally fused C.1 General C.2 Performance requirements C.3 Tests on fuses C.4 Guide for coordination of fuse protection C.4.1 General <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | C.4.2 Protection sequence <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | C.5 Choice of fuses C.5.1 General C.5.2 Non current-limiting fuses C.5.3 Current-limiting fuses C.6 Information needed by the user of the fuses <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Annex D (informative)Formulae for capacitors and installations D.1 Computation of the output of three-phase capacitors from three single-phase capacitance measurements D.2 Resonant frequency D.3 Voltage increase <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | D.4 Inrush transient current D.4.1 Switching in of single capacitor bank D.4.2 Switching on of a bank in parallel with energized bank(s) D.5 Discharge resistance in single-phase unit <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | D.6 Discharge time to 10 % of rated voltage <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V<\/b><\/p>\n |