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BS EN IEC 60384-14:2023

BS EN IEC 60384-14:2023

$215.11

Fixed capacitors for use in electronic equipment – Sectional specification. Fixed capacitors for electromagnetic interference suppression and connection to the supply mains

Published By Publication Date Number of Pages
BSI 2023 94
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IEC 60384-14:2023 applies to capacitors and resistor-capacitor combinations intended to be connected to AC mains or other supply with a nominal voltage not exceeding 1 000 V AC (RMS), and with a nominal frequency not exceeding 100 Hz. This document includes also additional specific conditions and requirements for the connection to DC supplies with a rated voltage not exceeding 1 500 V DC. The principal object of this part of IEC 60384 is to prescribe preferred ratings and characteristics and to select, from IEC 60384-1, the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor. Test severities and requirements prescribed in detail specifications referring to this sectional specification are of equal or higher performance level; lower performance levels are not permitted. This document also provides a schedule of safety tests to be used by national testing stations in countries where approval by such stations is required. The overvoltage categories in combination with the AC mains voltages for the capacitors classified in this document are to be taken from IEC 60664-1. This edition includes the following significant technical changes with respect to the previous edition:

  1. in damp heat steady state test, all capacitor types are tested both with and without rated voltage; the number of test pieces has been increased;
  2. tangent of loss angle is added In Group 0 tests, in safety tests only;
  3. qualification approval based on safety and performance tests has been removed from the main text to a normative annex;
  4. the range of rated voltages is given instead of exact rated voltage values;
  5. normative annex for description of capacitor styles and of creepage/clearance distance measurement has been added;
  6. the importance of mechanical failures (cracks) in component encapsulation as a safety feature is highlighted in handling instructions and requirements after all relevant tests.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
13 FOREWORD
15 1 Scope
2 Normative references
16 3 Terms and definitions and classification
3.1 Terms and definitions
17 Figures
Figure 1 – Two-terminal EMI suppression capacitor
Figure 2 – RC unit
Figure 3 – Lead-through capacitor (coaxial)
18 Figure 4 – Lead-through capacitors
19 Figure 5 – By-pass capacitors
21 3.2 Classifications
3.2.1 Classification of X capacitors
3.2.2 Classification of Y capacitors
Tables
Table 1 – Classification of Class X capacitors
22 4 Preferred ratings and characteristics
4.1 Preferred climatic categories
Table 2 – Classification of Class Y capacitors
23 4.2 Preferred values of ratings
4.2.1 Nominal capacitance (CN)
4.2.2 Tolerance on nominal capacitance
4.2.3 Selection of rated voltages (UR)
4.2.4 Nominal resistance (RN)
4.2.5 Rated temperature
4.2.6 Passive flammability
4.3 Requirements for sleeving, tape, tubing and wire insulation
24 5 Test and measurement procedures, and performance requirements
5.1 General
5.2 Visual examination and check of dimensions
5.2.1 General
5.2.2 Creepage distances and clearances
25 5.3 Electrical tests
5.3.1 Voltage proof
Table 3 – Creepage distances and clearances
26 Table 4 – Voltage proof
27 5.3.2 Capacitance
5.3.3 Tangent of loss angle
5.3.4 Resistance (Equivalent Series Resistance (ESR)) (for RC units only)
28 5.3.5 Insulation resistance
Table 5 – Insulation resistance – Safety tests only
29 5.4 Robustness of terminations
5.5 Resistance to soldering heat
5.5.1 General
5.5.2 Test conditions
Table 6 – Insulation resistance – Safety and performance tests
30 5.5.3 Final inspection, measurements, and requirements
5.6 Solderability
5.6.1 General
5.6.2 Test conditions
5.6.3 Requirements
5.7 Rapid change of temperature
5.7.1 General
Table 7 – Resistance to soldering heat – Requirements
31 5.7.2 Final inspection
5.8 Vibration
5.8.1 General
5.8.2 Test conditions
5.8.3 Final inspection
5.9 Repetitive shock (bump)
5.9.1 General
5.9.2 Test conditions
5.9.3 Final inspection, measurements, and requirements
32 5.10 Shock
5.10.1 General
5.10.2 Test conditions
5.10.3 Final inspection, measurements, and requirements
Table 8 – Shock test preferred severities
33 5.11 Container sealing
5.11.1 General
5.11.2 Test conditions
5.11.3 Requirements
5.12 Climatic sequence
5.12.1 General
5.12.2 Initial measurements
5.12.3 Dry heat
5.12.4 Damp heat, cyclic, test Db, first cycle
5.12.5 Cold
5.12.6 Damp heat, cyclic, test Db, remaining cycles
5.12.7 Final inspection, measurements, and requirements
34 5.13 Damp heat, steady state (DHSS)
5.13.1 General
5.13.2 Initial measurements
5.13.3 Test conditions
Table 9 – Climatic sequence – Requirements
35 5.13.4 Final inspection, measurements, and requirements
Table 10 – Damp heat, steady state –Requirements for samples tested without voltage applied
36 5.13.5 Sample size summary for humidity tests
5.14 Impulse voltage
5.14.1 General
5.14.2 Initial measurements
Table 11 – Damp heat, steady state – Requirements for samples tested with voltage applied
Table 12 – Sample sizes for humidity tests
37 5.14.3 Test conditions
5.14.4 Requirements
Figure 6 – Impulse wave form
38 5.15 Endurance
5.15.1 General
5.15.2 Test conditions
5.15.3 Sampling
5.15.4 Initial measurements
5.15.5 Endurance for Class X capacitors and RC units containing Class X capacitors
39 5.15.6 Endurance for Class Y capacitors and RC units containing Class Y capacitors
5.15.7 Endurance for the lead-through arrangements
40 5.15.8 Test conditions – Combined voltage/current tests
5.15.9 Final inspection, measurements, and requirements
5.16 Charge and discharge
5.16.1 General
5.16.2 Initial measurements
Table 13 – Endurance – Requirements
41 5.16.3 Test conditions
5.16.4 Final measurements and requirements
Table 14 – Charge and discharge – Requirements
42 5.17 Radiofrequency characteristics
5.18 Passive flammability test
5.18.1 Testing according to IEC 60384-1
5.18.2 Alternative passive flammability test
43 5.19 Active flammability test
5.19.1 Test condition
44 Figure 7 – Typical circuit for pulse loading of capacitors under AC voltage
Figure 8 – Fundamental AC wave with randomly, not synchronized, superimposed high-voltage pulse
45 5.19.2 Adjustment of Ui
5.19.3 Requirements
5.20 Component solvent resistance (if applicable)
5.21 Solvent resistance of the marking
6 Marking
6.1 General
6.2 Information for marking
46 6.3 Marking of capacitors
6.4 Marking of packaging
6.5 Additional marking
7 Information to be given in a detail specification
7.1 General
7.2 Outline drawing and dimensions
47 7.3 Mounting
7.4 Ratings and characteristics
7.4.1 General
7.4.2 Nominal capacitance range
7.4.3 Nominal resistance range (if applicable)
7.4.4 Particular characteristics
8 Assessment procedures
8.1 Primary stage of manufacture
48 8.2 Structurally similar components
8.3 Certified records of released lots
8.4 Approval testing
8.4.1 Safety tests only qualification approval
8.4.2 Qualification approval based on safety and performance testing
8.4.3 Qualification approval based on the fixed sample size procedure
50 Table 15 – Sampling plan – Tests concerning safety requirements only
51 Table 16 – Test schedule and sampling plan for lot-by-lot tests
Table 17 – Test schedule for safety tests only
53 8.5 Quality conformance inspection
8.5.1 General
54 8.5.2 Formation of inspection lots
Figure 9 – Increased voltage for tests below 2 seconds
55 8.5.3 Test schedule for safety tests only approval
8.5.4 Delayed delivery
8.5.5 Assessment level
56 Table 18 – Assessment level
57 Annexes
Annex A (normative) Circuit for the impulse voltage test
Figure A.1 – Impulse voltage test circuit
Table A.1 – Values of CX, CT, RP, RS, Cp
58 Table A.2 – Values and tolerances of CX, tr, td
59 Annex B (normative) Circuit for the endurance test
Figure B.1 – Endurance test circuit
60 Annex C (normative) Circuit for the charge and discharge test
Figure C.1 – Charge and discharge test circuit
61 Annex D (normative) Declaration of design (confidential to the manufacturer and the certification body)
62 Annex E (informative) Pulse test circuits
E.1 General
E.2 Test circuits
E.3 Charging of the capacitor
Figure E.1 – Resistive pulse test circuit
Figure E.2 – Inductive pulse test circuit
63 E.4 Discharging of the capacitor
E.4.1 Discharging in resistive circuit
E.4.2 Discharging in inductive circuit
Figure E.3 – Charge waveform for both circuits
Figure E.4 – Discharge waveform for resistive circuit
64 Figure E.5 – Discharge waveform for inductive circuit
65 Annex F (normative) Particular requirements for safety test of surface mount capacitors
F.1 General
F.2 Test and measurement procedures
66 Table F.1 – Test schedule and sampling plan for safety testof surface mount capacitors
67 Figure F.1 – Example of test substrate for safety test according to Table F.1
68 Annex G (informative) Capacitance ageing of fixed capacitors of ceramic dielectric, Class 2
G.1 Overview
G.2 Law of capacitance ageing
69 G.3 Capacitance measurements and capacitance tolerance
G.4 Special preconditioning
71 Annex H (normative) Use of safety approved AC rated capacitors in DC applications
H.1 Overview
H.2 Background
H.3 Additional requirement for use of X- and Y-capacitors in DC applications
72 H.4 Creepage and clearance distances
Table H.1 – Additional test conditions
73 Annex I (normative) Humidity robustness grades for applications, where high stability under high humidity operating conditions is required
I.1 Overview
I.2 Humidity robustness grades
I.2.1 General
I.2.2 Grade (I) robustness under humidity
I.2.3 Grade (II) robustness under high humidity
I.2.4 Grade (III) high robustness under high humidity
74 I.3 Test description
I.4 Indication of humidity robustness grades
Table I.1 – Requirements
75 Annex J (normative) Description of creepage/clearance distance measurement for cased and conformal coated capacitors
J.1 Measurement of creepage distances and clearance – general
J.1.1 General
J.1.2 Capacitor styles
J.1.3 Capacitor body and terminal insulation
Figure J.1 – Example of a cased capacitor
Figure J.2 – Example of a conformal coated capacitor
76 J.1.4 Measurement principle
Figure J.3 – Cased and conformal coated types
77 J.2 Measurement
J.2.1 Creepage distance between terminals
Figure J.4 – Description
Figure J.5 – Creepage distance – cased style
78 J.2.2 Clearance between terminals
J.2.3 Clearance in mounted stage
Figure J.6 – Creepage distance – conformal coated style
Figure J.7 – Clearance between terminals
79 Figure J.8 – Clearance in mounted stage – cased style
Figure J.9 – Clearance – capacitor body larger than lead pitch
Figure J.10 – Clearance – capacitor body smaller than lead pitch
80 J.2.4 Conductors between terminals
J.3 Precautions in handling
81 Annex K (normative) Safety and performance tests qualification approval
K.1 Overview
K.2 Qualification approval
Table K.1 – Sampling plan – Safety and performance tests qualification approval – Assessment level DZ
83 Table K.2 – Test schedule and sampling plan for lot-by-lot tests
Table K.3 – Test schedule for safety and performance tests qualification approvalAssessment level DZ
87 K.3 Quality conformance inspection
K.3.1 General
K.3.2 Groups A and B inspection
K.3.3 Group C inspection
K.3.4 Test schedule for qualification approval
88 Table K.4 – Assessment level
89 Annex X (informative) Cross-references to the previous edition of this document
Table X.1 – Reference to IEC 60384-14 for clause/subclause or annex
92 Table X.2 – Reference to IEC 60384-14 for figure/table
93 Bibliography

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