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BS EN IEC 60938-2:2021 Fixed inductors for electromagnetic interference suppression - Sectional specification on power line chokes, 2021
- undefined
- Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements [Go to Page]
- 4.1 General
- 4.2 Preferred values of ratings and characteristics [Go to Page]
- 4.2.1 Climatic categories
- 4.2.2 Nominal inductance and tolerance
- 4.2.3 Rated voltage UR
- 4.2.4 Rated temperature Tr
- 4.2.5 Rated current Ir
- 4.3 Information to be given in a detail specification [Go to Page]
- 4.3.1 General
- 4.3.2 Outline drawing and dimensions
- Figure 1 – Relation between ambient temperature and applied current [Go to Page]
- [Go to Page]
- 4.3.3 Mounting
- 4.3.4 Ratings and characteristics
- 4.4 Insulated inductors for power line applications
- 4.5 Marking
- 5 Safety tests for approval [Go to Page]
- 5.1 General [Go to Page]
- 5.1.1 Approval on the basis of the fixed sample size procedures
- 5.1.2 Structurally similar inductors
- 5.1.3 Sampling
- 5.2 Standard atmospheric conditions
- 5.3 Visual examination [Go to Page]
- 5.3.1 Dimensions (gauging)
- 5.3.2 Dimensions (detail)
- 5.4 Insulation resistance
- 5.5 Voltage test
- Tables [Go to Page]
- Table 1 – Test voltages
- 5.6 Inductance
- 5.7 Line resistance
- 5.8 Insertion loss (optional)
- 5.9 Temperature rise (applies to inductors with a mass > 5 g only) [Go to Page]
- 5.9.1 General
- 5.9.2 Test method
- 5.9.3 Requirements
- 5.10 Impulse voltage (applies to inductors with more than one winding only) [Go to Page]
- 5.10.1 Test conditions
- 5.10.2 Initial measurements
- 5.10.3 Requirements
- 5.11 Endurance [Go to Page]
- 5.11.1 Test conditions – Endurance current test (applies to inductors with a mass < 5 g only)
- 5.11.2 Test conditions – Endurance voltage test between terminations (applies to inductors with more than one winding only)
- 5.11.3 Final inspection, measurements and requirements
- 5.12 Robustness of terminations [Go to Page]
- 5.12.1 General
- 5.12.2 Test Ua1 – Tensile
- 5.12.3 Test Ub – Bending
- 5.12.4 Test Uc – Torsion
- 5.12.5 Test Ud – Torque
- 5.12.6 Test Ue – Robustness of terminations of SMD-components mounted on PCB
- Table 2 – Force for tensile stress on terminations
- Table 3 – Torque
- 5.13 Vibration [Go to Page]
- 5.13.1 Test conditions
- 5.13.2 Requirements
- 5.14 Shock [Go to Page]
- 5.14.1 Test conditions
- Table 4 – Acceleration
- Table 5 – Sweep cycles [Go to Page]
- 5.14.2 Requirements
- 5.15 Resistance to soldering heat
- 5.16 Solderability (optional) [Go to Page]
- 5.16.1 General
- 5.16.2 Preconditioning
- 5.16.3 Test procedure
- 5.16.4 Final inspection, measurements and requirements
- 5.17 Rapid change of temperature (optional)
- Table 6 – Preferred severities
- 5.18 Container sealing (if applicable)
- 5.19 Climatic sequence (optional) [Go to Page]
- 5.19.1 General
- 5.19.2 Dry heat
- 5.19.3 Damp heat, cyclic, test Db, first cycle
- 5.19.4 Cold
- 5.19.5 Low air pressure
- 5.19.6 Damp heat, cyclic, test Db, remaining cycles
- 5.19.7 Final inspection, measurements and requirements
- 5.20 Damp heat, steady state
- 5.21 Passive flammability (optional)
- 5.22 Glow wire (optional)
- Table 7 – Severities and requirements for passive flammability
- 5.23 Ball pressure (optional)
- 5.24 Component solvent resistance
- 5.25 Solvent resistance of marking
- Annex A (normative)Sampling plan
- Annex B (normative)Test schedule
- Annex C (normative)Declaration of design
- Annex D (normative)Clearance [Go to Page]
- Table D.1 – Clearance distances
- Annex E (normative)Creepage [Go to Page]
- Table E.1 – Creepage distances
- Annex F (normative)Fully insulated winding wires [Go to Page]
- Table F.1 – FIW wires with their minimum test voltages
- Annex X (informative)Cross-references for references to the previous edition of this document [Go to Page]
- Table X.1 – Cross-references
- Bibliography [Go to Page]
