BS EN 60939-3:2015:2018 Edition
$215.11
Passive filter units for electromagnetic interference suppression – Passive filter units for which safety tests are appropriate
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 80 |
This specification covers passive filters used to attenuate unwanted radio-frequency signals (such as noise or interference) generated from electromagnetic sources.
Both single and multi-channel filters within one enclosure or which are built on a printed circuit board forming a compact entity are included within the scope of this specification.
Filters constructed of capacitive elements where the inductance is inherent in the construction of the filter are within the scope of this specification. Similarly, filters constructed of inductive elements where the capacitance is inherent in the construction of the filter are also within the scope of this specification. It is up to the manufacturer to state whether a given component is to be designed as a capacitor, an inductor or a filter. Filters can include also other components like resistors and/or varistors or similar components
This specification applies to passive filter units for electromagnetic interference suppression for which safety tests are appropriate. This implies that filters specified according to this specification will either be connected to mains supplies, when compliance with the mandatory tests of Table 3 is necessary, or used in other circuit positions where the equipment specification prescribes that some or all of these safety tests are required.
This specification applies to passive filter units, which will be connected to an a.c. mains or other supply (d.c. or a.c.) with a nominal voltage not exceeding 1 000 V a.c., with a nominal frequency not exceeding 400 Hz, or 1 500 V d.c.
NOTE For a.c. use, IEC 60384-14 applies to capacitors which will be connected to a.c. mains with a nominal frequency not exceeding 100 Hz.
This specification covers appliance filters (US) but does not cover facility filters, cord-connected filters or direct plug-in filters. These other filters will be covered by another sectional specification.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | CONTENTS |
| 12 | FOREWORD |
| 14 | 1 General 1.1 Scope 1.2 Normative references |
| 16 | 1.3 Information to be given in a detail specification 1.3.1 General 1.3.2 Outline drawing and dimensions 1.3.3 Mounting |
| 17 | 1.3.4 Ratings and characteristics 1.3.5 Marking 1.4 Terms and definitions |
| 18 | Tables Table 1 – Classification of Class X capacitors |
| 19 | Table 2 – Classification of Class Y capacitors |
| 22 | 1.5 Marking 1.5.1 General Figures Figure 1 – Asymmetrical and symmetrical test circuit |
| 23 | 1.5.2 Coding 1.5.3 Marking details 1.5.4 Marking of filters 1.5.5 Marking of packaging 1.5.6 Additional marking 1.6 Components 1.7 Overcurrent protective devices |
| 24 | 1.8 Wiring and Insulation 1.8.1 General 1.8.2 Sleeving, tubing and wire insulation 1.8.3 Properties of insulation material 1.9 Protective Bonding Conductors |
| 25 | 1.10 Corrosion 2 Preferred ratings and characteristics 2.1 Preferred characteristics 2.1.1 General 2.1.2 Preferred climatic categories 2.2 Preferred values of ratings 2.2.1 Rated voltage (UR) 2.2.2 Rated temperature 2.2.3 Passive flammability |
| 26 | 3 Test plan for safety tests 3.1 Structurally similar filters 3.2 Safety approval procedure 3.2.1 General 3.2.2 Sampling |
| 27 | 3.2.3 Tests 3.3 Requalification tests |
| 28 | Table 3 – Tests concerning safety requirements only |
| 29 | 4 Test and measurement procedures 4.1 General 4.1.1 General 4.1.2 Standard atmospheric conditions 4.1.3 Standard atmospheric conditions for testing Table 4 – Lot-by-lot test – Safety tests only approval |
| 30 | 4.1.4 Recovery conditions 4.1.5 Referee conditions 4.1.6 Reference conditions Table 5 – Standard atmospheric conditions |
| 31 | 4.1.7 Drying 4.2 Visual examination and check of dimensions 4.2.1 Visual examination 4.2.2 Dimensions (gauging) 4.2.3 Dimensions (detail) 4.2.4 Creepage distances and clearances |
| 33 | Table 6 – Creepage distances |
| 34 | 4.3 Inductance measurement 4.3.1 General 4.3.2 Measuring conditions 4.4 Earth inductors incorporated in filters 4.5 Capacitance 4.5.1 General 4.5.2 Measuring conditions Table 7 – Clearance |
| 35 | 4.6 Insertion loss 4.7 Insulation resistance 4.7.1 General 4.7.2 Measuring voltage |
| 36 | 4.7.3 Application of measuring voltage Table 8 – DC voltage for insulation resistance |
| 37 | 4.7.4 Mean time to measuring 4.7.5 Temperature correction factor 4.7.6 Information to be given in a detail specification |
| 38 | Figure 2 – Examples for the application of Tests A and B of Table 9 Table 9 – Measuring points |
| 39 | 4.7.7 Requirements Figure 3 – Examples for the application of Test C of Table 9 Table 10 – Insulation resistance – Safety tests only |
| 40 | 4.8 Voltage proof 4.8.1 General 4.8.2 Test procedure 4.8.3 Applied voltage Table 11 – Insulation resistance – Safety and performance tests |
| 41 | 4.8.4 Tests Table 12 – Voltage proof (filter connected to mains) Table 13 – Voltage proof (filter not connected to mains; e.g. d.c. filters) |
| 42 | 4.8.5 Requirements 4.8.6 Repetition of the voltage proof test 4.8.7 Information to be given in a detail specification 4.8.8 Requirements 4.9 DC line resistance or voltage drop at rated current 4.9.1 General 4.9.2 DC line resistance 4.9.3 Voltage drop at rated current |
| 43 | 4.10 Discharge resistance 4.10.1 General 4.10.2 Resistor Test |
| 44 | 4.11 Robustness of terminations 4.11.1 General 4.11.2 Test Ua1 – Tensile 4.11.3 Test Ub – Bending 4.11.4 Test Uc – Torsion 4.11.5 Test Ud – Torque Table 14 – Force for wire terminations |
| 45 | Table 15 – Torque |
| 46 | 4.11.6 Visual examination 4.12 Resistance to soldering heat 4.12.1 Applicability of the test 4.12.2 Pre-measurement 4.12.3 Test conditions 4.12.4 Test severity 4.12.5 Intermediate inspection, measurements and requirements 4.13 Solderability (for performance only) 4.13.1 General |
| 47 | 4.13.2 Test method 4.13.3 Test conditions 4.13.4 Requirements 4.13.5 Final measurements and requirements 4.14 Rapid change of temperature (for performance only) 4.14.1 Pre-measurements |
| 48 | 4.14.2 Test method 4.14.3 Final inspection 4.15 Vibration (for performance only) 4.15.1 Pre-measurements 4.15.2 Test method 4.15.3 Test conditions 4.15.4 Intermediate inspection 4.15.5 Final Inspection 4.16 Shock (for performance only) 4.16.1 Pre measurements |
| 49 | 4.16.2 Test method 4.16.3 Test conditions 4.16.4 Final Inspection 4.17 Container sealing (for performance only) 4.17.1 General 4.17.2 Test conditions 4.17.3 Requirements 4.18 Climatic sequence 4.18.1 General 4.18.2 Initial measurements Table 16 – Preferred severity |
| 50 | 4.18.3 Dry heat 4.18.4 Damp heat, cyclic 4.18.5 Cold 4.18.6 Low air pressure |
| 51 | 4.18.7 Damp heat, cyclic, remaining cycles 4.18.8 Final inspection, measurements and requirements 4.19 Damp heat, steady state 4.19.1 Pre-measurements 4.19.2 Test method 4.19.3 Test conditions Table 17 – Number of cycles |
| 52 | 4.19.4 Final inspection, measurements and requirements 4.20 Temperature rise 4.20.1 General 4.20.2 Test method |
| 53 | 4.20.3 Test description |
| 54 | 4.20.4 Requirements Table 18 – Maximum temperatures |
| 55 | 4.21 Current overload 4.21.1 Pre-measurements 4.21.2 Test method 4.21.3 Final inspection, measurements and requirements 4.22 Leakage current 4.23 Protective conductor resistance |
| 56 | 4.24 Impulse voltage 4.24.1 General 4.24.2 Initial measurements 4.24.3 Test conditions 4.24.4 Requirements Figure 4 – Impulse wave form |
| 57 | 4.25 Endurance 4.25.1 General 4.25.2 General test conditions 4.25.3 Test conditions – current test |
| 58 | 4.25.4 Test conditions – voltage test, terminations/case 4.25.5 Test conditions – voltage test between terminations |
| 59 | 4.25.6 Test conditions – combined voltage/current tests 4.25.7 Final inspection, measurements and requirements 4.26 Charge and discharge (for performance only) 4.26.1 General 4.26.2 Test circuits and wave forms |
| 60 | Figure 5 – Relay circuit Figure 6 – Thyristor circuit |
| 61 | 4.26.3 Information given in detail specification 4.26.4 Initial measurements Figure 7 – Voltage and current waveforms |
| 62 | 4.26.5 Test conditions 4.26.6 Final measurements and requirements 4.27 Passive flammability 4.27.1 General 4.27.2 Test method Table 19 – Measurements and requirements after charge and discharge |
| 63 | 4.28 Active flammability 4.29 Solvent resistance of the marking 4.29.1 General 4.29.2 Test description Table 20 – Categories of flammability |
| 64 | 4.29.3 Requirements after test 4.30 Component solvent resistance (for performance only) 4.30.1 General 4.30.2 Initial measurements 4.30.3 Test description 4.30.4 Final measurements |
| 65 | Annex A (informative)Calculation of leakage current Figure A.1 – Leakage current for 1-line filters |
| 66 | Figure A.2 – Leakage current for 2-line filters |
| 67 | Figure A.3 – Leakage current for 3-line filters |
| 68 | Figure A.4 – Leakage current for 4-line filters |
| 69 | Annex B (normative)Test schedule for safety requirements only Table B.1 – Test schedule for safety requirements only (1 of 3) |
| 72 | Annex C (normative)Circuit for the impulse voltage test Figure C.1 – Impulse voltage test circuit Table C.1 – Values of CX, CT, RP, RS, CP |
| 73 | Table C.2 – Values and tolerances of Cx, tr, td |
| 74 | Annex D (normative)Circuit for the endurance test Figure D.1 – Endurance test circuit |
| 75 | Annex E (normative)Declaration of design |
| 76 | Annex F (informative)Safety and performance tests qualification approval – Assessment level DZ Table F.1 – Sampling plan – Assessment level DZ (1 of 2) |
| 78 | Annex P (informative)Additional components and material standards |
| 79 | Bibliography |
