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BS EN IEC 60939-3:2024 Passive filter units for electromagnetic interference suppression - Passive filter units for which safety tests are appropriate, 2024
- undefined
- Annex ZA (normative)Normative references to international publicationswith their corresponding European publications [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- Figures [Go to Page]
- Figure 1 – Asymmetrical and symmetrical test circuit
- 4 General requirements [Go to Page]
- 4.1 Classification and usage of class X and Y capacitors [Go to Page]
- 4.1.1 General
- 4.1.2 Class X capacitors
- 4.1.3 Class Y capacitors
- Tables [Go to Page]
- Table 1 – Classification of Class X capacitors
- 4.2 Information to be given in a detail specification [Go to Page]
- 4.2.1 General
- Table 2 – Classification of Class Y capacitors [Go to Page]
- 4.2.2 Outline drawing and dimensions
- 4.2.3 Mounting
- 4.2.4 Ratings and characteristics
- 4.3 Marking [Go to Page]
- 4.3.1 General
- 4.3.2 Coding
- 4.3.3 Marking details
- 4.3.4 Marking of filters
- 4.3.5 Marking of packaging
- 4.3.6 Additional marking
- 4.4 Components
- 4.5 Overcurrent protective devices
- 4.6 Wiring and Insulation [Go to Page]
- 4.6.1 General
- 4.6.2 Sleeving, tubing and wire insulation
- 4.6.3 Properties of insulation material
- 4.7 Protective Bonding Conductors
- 4.8 Corrosion
- 5 Preferred ratings and characteristics [Go to Page]
- 5.1 Preferred characteristics [Go to Page]
- 5.1.1 General
- 5.1.2 Preferred climatic categories
- 5.2 Preferred values of ratings [Go to Page]
- 5.2.1 Rated voltage (UR)
- 5.2.2 Rated temperature
- 5.2.3 Passive flammability
- 6 Test plan for safety tests [Go to Page]
- 6.1 Structurally similar filters
- 6.2 Safety approval procedure [Go to Page]
- 6.2.1 General
- 6.2.2 Sampling
- 6.2.3 Tests
- 6.3 Requalification tests
- 7 Test and measurement procedures [Go to Page]
- 7.1 Measurement conditions [Go to Page]
- 7.1.1 General
- 7.1.2 Standard atmospheric conditions for testing
- 7.1.3 Recovery conditions
- 7.1.4 Referee conditions
- 7.1.5 Reference conditions
- 7.1.6 Drying
- Table 3 – Standard atmospheric conditions
- 7.2 Visual examination and check of dimensions [Go to Page]
- 7.2.1 Visual examination
- 7.2.2 Dimensions (gauging)
- 7.2.3 Dimensions (detail)
- 7.2.4 Creepage distances and clearances
- Table 4 – Creepage distances
- Table 5 – Clearance
- 7.3 Inductance measurement [Go to Page]
- 7.3.1 General
- 7.3.2 Measuring conditions
- 7.4 Earth inductors incorporated in filters
- 7.5 Capacitance [Go to Page]
- 7.5.1 General
- 7.5.2 Measuring conditions
- 7.6 Insertion loss
- 7.7 Insulation resistance [Go to Page]
- 7.7.1 General
- 7.7.2 Measuring voltage
- 7.7.3 Application of measuring voltage
- Table 6 – DC voltage for insulation resistance [Go to Page]
- 7.7.4 Mean time to measuring
- 7.7.5 Temperature correction factor
- 7.7.6 Information to be given in a detail specification
- Figure 2 – Examples for the application of Tests A and B of Table 7
- Table 7 – Measuring points [Go to Page]
- 7.7.7 Requirements
- Figure 3 – Examples for the application of Test C of Table 7
- Table 8 – Insulation resistance – Safety tests only
- 7.8 Voltage proof [Go to Page]
- 7.8.1 General
- 7.8.2 Test procedure
- 7.8.3 Applied voltage
- Table 9 – Insulation resistance – Safety and performance tests [Go to Page]
- 7.8.4 Tests
- Table 10 – Voltage proof (filter connected to mains)
- Table 11 – Voltage proof (filter not connected to mains; e.g. DC filters) [Go to Page]
- 7.8.5 Requirements
- 7.8.6 Repetition of the voltage proof test
- 7.8.7 Information to be given in a detail specification
- 7.8.8 Requirements
- 7.9 DC line resistance or voltage drop at rated current [Go to Page]
- 7.9.1 General
- 7.9.2 DC line resistance
- 7.9.3 Voltage drop at rated current
- 7.10 Discharge resistance [Go to Page]
- 7.10.1 General
- 7.10.2 Resistor Test
- 7.11 Capacitor discharge [Go to Page]
- 7.11.1 General
- 7.11.2 Discharge measurement
- 7.12 Robustness of terminations [Go to Page]
- 7.12.1 General
- 7.12.2 Test Ua1 – Tensile
- 7.12.3 Test Ub – Bending
- 7.12.4 Test Uc – Torsion
- 7.12.5 Test Ud – Torque
- Table 12 – Force for wire terminations
- Table 13 – Torque [Go to Page]
- 7.12.6 Visual examination
- 7.13 Resistance to soldering heat [Go to Page]
- 7.13.1 Applicability of the test
- 7.13.2 Pre-measurement
- 7.13.3 Test conditions
- 7.13.4 Test severity
- 7.13.5 Intermediate inspection, measurements and requirements
- 7.14 Climatic sequence [Go to Page]
- 7.14.1 General
- 7.14.2 Initial measurements
- 7.14.3 Dry heat
- 7.14.4 Damp heat, cyclic
- 7.14.5 Cold
- 7.14.6 Low air pressure
- 7.14.7 Damp heat, cyclic, remaining cycles
- 7.14.8 Final inspection, measurements and requirements
- Table 14 – Number of cycles
- 7.15 Damp heat, steady state [Go to Page]
- 7.15.1 Pre-measurements
- 7.15.2 Test method
- 7.15.3 Test conditions
- 7.15.4 Final inspection, measurements and requirements
- 7.16 Temperature rise [Go to Page]
- 7.16.1 General
- 7.16.2 Test method
- 7.16.3 Test description
- 7.16.4 Requirements
- 7.17 Current overload [Go to Page]
- 7.17.1 Pre-measurements
- 7.17.2 Test method
- Table 15 – Maximum temperatures [Go to Page]
- 7.17.3 Final inspection, measurements and requirements
- 7.18 Leakage current
- 7.19 Protective conductor resistance
- 7.20 Impulse voltage [Go to Page]
- 7.20.1 General
- 7.20.2 Initial measurements
- 7.20.3 Test conditions
- 7.20.4 Requirements
- 7.21 Endurance [Go to Page]
- 7.21.1 General
- 7.21.2 General test conditions
- Figure 4 – Impulse wave form [Go to Page]
- 7.21.3 Test conditions – current test
- 7.21.4 Test conditions – voltage test, terminations/case
- 7.21.5 Test conditions – voltage test between terminations
- 7.21.6 Test conditions – combined voltage/current tests
- 7.21.7 Final inspection, measurements and requirements
- 7.22 Passive flammability [Go to Page]
- 7.22.1 General
- 7.22.2 Test method
- Table 16 – Categories of flammability
- 7.23 Active flammability
- 7.24 Solvent resistance of the marking [Go to Page]
- 7.24.1 General
- 7.24.2 Test description
- 7.24.3 Requirements after test
- 8 Optional tests (for performance only) [Go to Page]
- 8.1 Solderability [Go to Page]
- 8.1.1 General
- 8.1.2 Test method
- 8.1.3 Test conditions
- 8.1.4 Requirements
- 8.1.5 Final measurements and requirements
- 8.2 Rapid change of temperature [Go to Page]
- 8.2.1 Pre-measurements
- 8.2.2 Test method
- 8.2.3 Final inspection
- 8.3 Vibration [Go to Page]
- 8.3.1 Pre-measurements
- 8.3.2 Test method
- 8.3.3 Test conditions
- 8.3.4 Intermediate inspection
- 8.3.5 Final Inspection
- 8.4 Shock [Go to Page]
- 8.4.1 Pre-measurements
- 8.4.2 Test method
- 8.4.3 Test conditions
- 8.4.4 Final Inspection
- 8.5 Container sealing [Go to Page]
- 8.5.1 General
- 8.5.2 Test conditions
- 8.5.3 Requirements
- 8.6 Charge and discharge [Go to Page]
- 8.6.1 General
- 8.6.2 Test circuits and wave forms
- Figure 5 – Relay circuit
- Table 17 – Preferred severity
- Figure 6 – Thyristor circuit [Go to Page]
- 8.6.3 Information given in detail specification
- 8.6.4 Initial measurements
- Figure 7 – Voltage and current waveforms [Go to Page]
- 8.6.5 Test conditions
- 8.6.6 Final measurements and requirements
- 8.7 Component solvent resistance [Go to Page]
- 8.7.1 General
- 8.7.2 Initial measurements
- Table 18 – Measurements and requirements after charge and discharge [Go to Page]
- 8.7.3 Test description
- 8.7.4 Final measurements
- Annexes [Go to Page]
- Annex A (informative) Calculation of leakage current
- Figure A.1 – Leakage current for 1-line filters
- Figure A.2 – Leakage current for 2-line filters
- Figure A.3 – Leakage current for 3-line filters
- Figure A.4 – Leakage current for 4-line filters
- Annex B (normative) Sampling plan for safety requirements only
- Table B.1 – Tests concerning safety requirements only
- Table B.2 – Lot-by-lot test – Safety tests only approval
- Annex C (normative) Test schedule for safety requirements only
- Table C.1 – Test schedule for safety requirements only
- Annex D (normative) Circuit for the impulse voltage test
- Figure D.1 – Impulse voltage test circuit
- Table D.1 – Values of CX, CT, RP, RS, CP
- Table D.2 – Values and tolerances of Cx, tr, td
- Annex E (normative) Circuit for the endurance test
- Figure E.1 – Endurance test circuit
- Annex F (normative) Declaration of design
- Annex G (informative) Safety and performance tests qualification approval – Assessment level DZ
- Table G.1 – Sampling plan – Assessment level DZ
- Annex X (informative) Cross reference for references to the previous edition of this document
- Table X.1 – Reference to IEC 60939-3 for clause/subclause or annex
- Table X.2 – Reference to IEC 60939-3 for Figures/Tables
- Bibliography [Go to Page]
