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BS EN IEC 63210:2021

BS EN IEC 63210:2021

$198.66

Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V

Published By Publication Date Number of Pages
BSI 2021 62
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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.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
11 FOREWORD
13 1 Scope
2 Normative references
14 3 Terms and definitions
18 4 Service conditions
4.1 Normal service conditions
19 4.2 Unusual service conditions
5 Quality requirements and tests
5.1 General
5.2 Test conditions
Tables
Table 1 ā€“ Letter symbols for upper limit of temperature range
20 6 Classification of tests
6.1 Routine tests
6.2 Type tests and design tests
21 6.3 Acceptance tests
7 Capacitance measurement
7.1 Measuring procedure
22 7.2 Capacitance tolerances
8 Measurement of the tangent of the loss angle (tan Ī“) 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
23 9.3 DC test
9.4 Type test
10 Voltage tests between terminals and container
10.1 Routine test
24 10.2 Type test
11 Test of internal discharge device
12 Sealing test
25 13 Thermal stability test (type test)
13.1 General
13.2 Measuring procedure
Table 2 ā€“ Ambient air temperature for the thermal stability test
26 14 Measurement of the tangent of the loss angle (tan Ī“) 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)
27 16 Overvoltage test (design test)
16.1 General
16.2 Conditioning of the sample before the test
28 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
29 16.5.4 Waveform of overvoltage
17 Short-circuit discharge test (type test)
Figures
Figure 1 ā€“ Time and amplitude limits for an overvoltage period
30 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
31 19.2 Test setup for capacitors without actively monitored safety device (internally protected)
19.3 Acceptance criteria
32 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
33 20.2 General requirements
20.2.1 General
20.2.2 Adjacent insulating components and equipment
20.2.3 Capacitors insulated from ground
34 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
35 Table 3 ā€“ Standard insulation levels for range I (1 kV < Um ā‰¤ 245 kV)
36 Table 4 ā€“ Standard insulation levels for range II (Um > 245 kV)
37 21 Overloads ā€“ Maximum permissible voltage
21.1 Long duration voltages
21.2 Switching overvoltages
22 Overloads ā€“ Maximum permissible current
Table 5 ā€“ Admissible voltage levels in service
38 23 Safety requirements for discharge devices
24 Safety requirements for container connections
25 Safety requirements for protection of the environment
26 Other safety requirements
39 27 Markings of the capacitor unit
27.1 Rating plate
27.2 Standardized connection symbols
40 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
41 29.2 Choice of the rated voltage
29.3 Operating temperature
29.3.1 General
42 29.3.2 Installation
29.3.3 High ambient air temperature
29.4 Special service conditions
43 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
44 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
45 29.7.2 Restrike-free circuit-breakers
29.7.3 Relay settings
46 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 ā€“ Insulation requirements
47 Figure 2 ā€“ Bank isolated from ground
Figure 3 ā€“ Bank isolated from ground (containers connected to ground)
48 29.8.4 Overhead ground wires
29.9 Choice of creepage distances and air clearance
29.9.1 Creepage distance
Figure 4 ā€“ Bank connected to ground
Table 7 ā€“ Specific creepage distances
49 29.9.2 Air clearances
50 Table 8 ā€“ Correlation between standard lightning impulse withstand voltages and minimum air clearances (Table A.1 from IEC 60071-2:1996)
51 29.10 Capacitors connected to systems with audio-frequency remote control
Figure 5 ā€“ Air clearance versus AC withstand
52 Annex A (normative)Requirements regarding comparable element designand test unit design
A.1 Test element design criteria
A.2 Test unit design
54 Annex B (informative)Self-healing breakdown test equipment that may be used
Figure B.1 ā€“ Example of self-healing detection equipment
55 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
56 C.4.2 Protection sequence
57 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
58 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
59 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
60 D.6 Discharge time to 10 % of rated voltage
61 Bibliography

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BS EN IEC 63210:2021
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