IEC 60939-2:2005

FOREWORD
1 General
  1.1 Scope
  1.2 Normative references
  1.3 Information to be given in a detail specification
  1.4 Definitions
  1.5 Marking
2 Preferred ratings and characteristics
  2.1 Preferred characteristics
  2.2 Preferred values of ratings
3 Quality assessment procedures
  3.1 Primary stage of manufacture
  3.2 Structurally similar filters
  3.3 Certified records of released lots
  3.4 Approval testing
  3.5 Quality conformance inspection
4 Test and measurement procedures
  4.1 Earth inductors incorporated in filters
  4.2 Capacitance and tan delta measurements
  4.3 Visual examination and check of dimensions
  4.4 Voltage proof
  4.5 Insulation resistance
  4.6 DC line resistance or voltage drop at rated current
  4.7 Insertion loss
  4.8 Discharge resistance
  4.9 Robustness of terminations
  4.10 Resistance to soldering heat
  4.11 Solderability
  4.12 Rapid change of temperature
  4.13 Vibration
  4.14 Bump
  4.15 Shock
  4.16 Container sealing
  4.17 Climatic sequence
  4.18 Damp heat, steady state
  4.19 Temperature rise
  4.20 Impulse voltage
  4.21 Endurance
  4.22 Charge and discharge
  4.23 Passive flammability
  4.24 Current overload
  4.25 Solvent resistance of the marking
  4.26 Component solvent resistance
  4.27 Active flammability
Annex A (normative) Test schedule for qualification approval
                    - Assessment level D/DZ
Annex B (normative) Test schedule for safety requirements only
Annex C (normative) Circuit for the impulse voltage test
Annex D (normative) Circuit for the endurance test
Annex E (normative) Declaration of design
Figures
Tables

IEC 60939-2:2005 applies to passive filter units for electromagnetic interference suppression which fall within the scope of the Generic Specification IEC 60939-1. The scope of this Sectional specification is restricted to passive filter units for which safety tests are appropriate. This implies that filters specified according to this Sectional 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. The contents of the corrigendum of November 2005 have been included in this copy.