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项目名称
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章节号
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测试方法
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Leakage current
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4.4.1
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See IEC 62391-1, 4.7 with the following details:
4.4.1.1 Measuring conditions
The rated voltage shall be applied across the capacitor and its protective resistor.
The protective resistor shall have a value of 1 000 Ω or less.
Unless otherwise agreed upon between the trading partners, the discharge time before test shall be 12 h or longer.
Unless otherwise agreed upon between the trading partners, the electrification time shall be 24 h.
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Capacitance
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4.4.2
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See IEC 62391-1, 4.5.1, with the following details:
4.4.2.1 Measuring conditions
The ambient temperature shall be 20 °C ± 2 °C.
The measurement shall be made under the conditions of IEC 62391-1, 4.5.1.2, Class 3.
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Internal resistance
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4.4.3
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See IEC 62391-1, 4.6.2, with the following details.
NOTE The a.c. resistance method should be used when a correlation is found with the results of the d.c. measuring method. The measuring method should be in accordance with IEC 62391-1, 4.6.1.
4.4.3.1 Measuring conditions
The ambient temperature shall be 20 °C ± 2 °C.
The measurement shall be made under the conditions of IEC 62391-1, 4.6.2.1, Class 3.
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Robustness of terminations
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4.5
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See IEC 62391-1, 4.9, with the following details.
The detail specification shall specify the test method and degree of severity to be used.
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Resistance to soldering heat
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4.6
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NOTE Not applicable to capacitors with screw terminations or other terminations not designed to be soldered, as stated in the detail specification.
See IEC 62391-1, 4.10, with the following details.
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Solderability
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4.7
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See IEC 62391-1, 4.11, with the following details.
NOTE Not applicable to capacitors with screw terminations or other terminations not designed to be soldered, as stated in the detail specification.
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Rapid change of temperature
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4.8
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See IEC 62391-1, 4.12, with the following details.
4.8.2 Conditioning
The capacitance shall be subjected to test Na for 5 cycles.
The duration of the exposure at each temperature limit shall be 30 min or 3 h as specified in the detail specification.
The recovery period shall be 16 h.
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Vibration
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4.9
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See IEC 62391-1, 4.13 with the following details.
4.9.2 Test condition
Test Fc, Procedure B4, shall be applied with following severities.
Frequency range: 10-55 Hz
Amplitude: 0,75 mm or acceleration: 100 m/s2 (whichever is less stringent)
Total test time: 6 h
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Endurance
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4.10
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See IEC 62391-1, 4.15, with the following details.
Duration: 1 000 h for upper category temperature 70 °C grade capacitors;
2 000 h for upper category temperature 60 °C grade capacitors. Applied voltage: category voltage, unless otherwise specified in the detail specification.
NOTE When the category voltage is different from the rated voltage, the sample tested is divided into two parts and submitted to the rated temperature at the category voltage respectively.
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Self-discharge
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4.11
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See IEC 62391-1, 4.8, with the following details
Unless otherwise agreed upon between the trading partners, the discharge time before test shall be 12 h or longer.
The charge voltage shall be the rated voltage. The requirement for another charge voltage shall be prescribed in the detail specification.
Charge time: 8 h.
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Storage at high temperature
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4.12
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See IEC 62391-1, 4.16, with the following details.
Temperature: upper category temperature;
Duration: 96 h ± 4 h.
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Characteristics at high and low temperature
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4.13
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See IEC 62391-1, 4.17, with the following details.
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Damp heat, steady state
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4.14
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See IEC 62391-1, 4.14 with the following details.
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Passive flammability (if applicable)
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4.15
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See IEC 62391-1, 4.20, with the following details.
No preconditioning is required.
The flame shall be applied for the period of the time specified in IEC 62391-1 corresponding to the volume of the specimen and the category of flammability specified in the detail specification.
Unless otherwise specified in the detail specification, the flammability category shall be C.
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Pressure relief (if applicable)
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4.16
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See IEC 62391-1, 4.21
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