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1. 额定容量 Rated capacitance:

    电容器容量的设计值,通常在电容器上显示。

    The capacitance value for which the capacitor has been

    designed and which is usually indicated upon it. 

2. 类别温度范围 Category temperature range

    电容器设计连续工作温度的范围,是由类别温度所定义的。

    The range of ambient temperatures for which the capacitor 

    has been designed to operate continuously; This is defined 

    by the temperature limits of the appropriate category. 

3. 上限类别温 Upper category temperature

    电容器连续工作下最高的环境温度。

    The maximum ambient temperature for which a capacitor 

    has been designed to operate continuously. 

4. 下限类别温度 Lower category temperature

    电容器连续工作下最低的环境温度。

    The minimum ambient temperature for which a capacitor 

    has been designed to operate continuously. 

5. 额定温度 Rated temperature

    可连续施加额定电压的最大环境温度。

    The maximum ambient temperature at which rated voltage 

    may be continuously applied. 

6. 额定电压 Rated voltage

    最大的直流电压或最大有效值交流电压或脉冲电压的峰值,

    可在下限类别温度与额定温度之间任一温度下连续载入于电

    容器的电压。

    The maximum direct voltage or the maximum RMS 

    alternating voltage or peak value of pulse voltage which 

    may be applied continuously to a capacitor at any 

    temperature between the lower category temperature 

    and the rated temperature.

7. 类别电压 Category voltage

    電容器在其上限溫度下可連續施加在電容器上的最大電壓。 

    The maximum voltage which may be applied continuously

    to a capacitor at its upper category temperature. 

8. 温度降额电压 Temperature derating voltage

    对于额定温度和上限类别温度之间的任一温度,降温电压是

    可以连续施加到电容器上的最大电压。

    For any temperature between the rated temperature and

    the upper category temperature, the temperature 

    derating voltage is the maximum voltage that may be 

    applied continuously to a capacitor. 

  9. 绝缘电阻(IR)/时间常数(t)

      Insulation resistance (lR)/time constant

      绝缘电阻是电容器充电一分钟后所加的直流电压和流经电容

      器的漏电流值的比值。 单位“MΩ”。 时间常数为绝缘电阻和

      电容量的乘积,通常以秒表示,公式如下:

      t (s)=lR (MΩ)×CR (μF).

      The insulation resistance is the ratio between an applied 

      DC voltage and the resulting leakage current after a 

      minute of charge. It is expressed in MΩ. The time 

      constant is expressed in seconds with the following 

      formula: 

       t (s)=lR (MΩ)×CR (μF).

  10. 脉冲上升时间 Pulse rise time (dv/dt)

      脉冲上升时间决定了电容器承受快速电压变化引起的大电流

      峰值的能力。 峰值电流定义公式如下:

      lp(A)=C(uF) × dv/dt ( V/μs) 

      The pulse rise time defines the capability of a capacitor to 

      withstand high current peaks due to fast voltage changes. 

      The peak current is defined by the following formula: 

      lp(A)=C(uF) × dv/dt ( V/μs) 

  11. 损耗角正切及等效串联电阻

      Dissipation factor and equivalent series resistance

      耗散因数或损耗角正切(tanδ) 是指电容器在规定频率的正弦

      电压作用下,电容器损耗的功率除以电容器的无功功率。 

      等效串联电阻(ESR)是由电容串联电阻和电感组成的等效

      电路。

      The dissipation factor or tangent of loss angle (tanδ) is the 

      power loss of the capacitor divided by the reactive power of 

      the capacitor at a sinusoidal voltage of specified frequency. 

      The equivalent series resistance(ESR) is the resistive part 

      of the equivalent circuit composed of capacitance, series 

      resistance and inductance. 


Technical Terms




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