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About Us 常用技术术语

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. 上限类别温度 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.



常用技术术语




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