09/30173454 DC : 0

FOREWORD
1 Scope and object
2 Normative references
3 Definitions
4 Service conditions
  4.1 Normal service conditions
       4.1.1 Altitude
       4.1.2 Temperature
  4.2 Unusual service conditions
5 Quality requirements and tests
  5.1 Test requirements
       5.1.1 General
       5.1.2 Test conditions
  5.2 Classification of tests
       5.2.1 Routine tests
       5.2.2 Type tests
       5.2.3 Acceptance tests
  5.3 Capacitance and tan delta measurements
       (routine test)
       5.3.1 Measuring procedure
       5.3.2 Capacitance tolerances
       5.3.3 Loss requirements (tan delta)
  5.4 Capacitor loss tangent (tan delta) measurement
       (type test)
       5.4.1 Measurements
       5.4.2 Loss requirements
  5.5 Voltage test between terminals
       5.5.1 General
       5.5.2 Routine test
       5.5.3 Type test
  5.6 AC voltage test between terminals and case
       5.6.1 Routine test
       5.6.2 Type test
  5.7 Test of internal discharge device
  5.8 Sealing test
  5.9 Surge discharge test
  5.10 Thermal stability test
       5.10.1 General
       5.10.2 Measuring procedure
  5.11 Self-healing test
  5.12 Resonance frequency measurement
  5.13 Environmental testing
       5.13.1 Change of temperature
       5.13.2 Damp heat, steady state
  5.14 Mechanical testing
       5.14.1 Mechanical tests of terminals
       5.14.2 External inspection
       5.14.3 Vibration and shocks
  5.15 Endurance test
       5.15.1 Conditioning of the units before the test
       5.15.2 Initial capacitance and loss factor measurements
       5.15.3 Endurance test
       5.15.4 Final capacitance and tan delta measurement
       5.15.5 Acceptance criteria
  5.16 Destruction test
       5.16.1 General
       5.16.2 Test sequence for a.c. capacitors
  5.17 Disconnecting test on internal fuses
       5.17.1 General
       5.17.2 Disconnecting requirements
       5.17.3 Withstand requirements
       5.17.4 Test procedure
       5.17.5 Capacitance measurement
       5.17.6 Visual checking
       5.17.7 Voltage test
  5.18 Partial discharge measurements (optional type tests)
6 Overloads
  6.1 Maximum permissible voltage
7 Safety requirements
  7.1 Discharge device
  7.2 Case connections
  7.3 Protection of the environment
  7.4 Other safety requirements
8 Markings
  8.1 Marking of the units
       8.1.1 Rating plate
       8.1.2 Data sheet
9 Guide to installation and operation
  9.1 General
  9.2 Choice of rated voltage
  9.3 Operating temperature
       9.3.1 Installation
       9.3.2 Unusual cooling conditions
  9.4 Special service conditions
  9.5 Overvoltages
  9.6 Overload currents
  9.7 Switching and protective devices
  9.8 Choice of creepage distance and clearance
  9.9 Connections
  9.10 Parallel connections of capacitors
  9.11 Series connections of capacitors
  9.12 Magnetic losses and eddy currents
  9.13 Guide for internal fuse and disconnector
       protection in capacitors
  9.14 Guide for unprotected capacitors
Annex A (informative) - Waveforms
Annex B (normative) - Operational limits of capacitors
        with sinusoidal voltages as a function of frequency
        and at maximum temperature (theta[max])
Annex C (normative) - Resonance frequency measuring
        methods - Examples
  C.1 Method 1
  C.2 Method 2
Annex D (informative) - Bibliography

BS EN 61881-1