技术术语解释
Explanations of Nomenclature
◆ 额定电容量：在1KHz频率和20℃温度下测得的容量
Rated Capacitance : the capacitance at 1KHz and 20℃
◆ 容量允许偏差：在20℃时，允许偏离额定容量的偏差值
Capacitance Tolerances: the allowable deviation of capacitance at 20℃
◆ 额定电压（UR）：在额定温度下，可以连续施加在电容器两端的最大直流电压或最大交流有效电压或脉冲电压的最大值
Rated Voltage (UR): the maximum DC voltage or effective AC voltage or pulse peak-peak value able to be continuously applied on capacitor poles under rated temperature
◆ 类别电压（UC）：在上类别温度下，可以连续施加在电容器两端的最大直流电压或最大交流有效电压或脉冲电压的最大值
Category Voltage (Uc): the maximum DC voltage or effective AC voltage or pulse peak-peak value able to be continuously applied on capacitor poles under upper-class-temperature
◆ 气候类别：电容器的气候类别用字母（标准DIN40040： 例 FME）或数字（标准 IEC68-1：例：55/85/21）来表示。第一个字母或数字代表下类别温度；第二个字母或数字代表上类别温度，第三个字母或数字代表湿热试验的天数
Climate Category: weather classes are expressed by characters (DIN40040: FME as an example) or a group of numbers (IEC68-1: 55/85/21 as an example). The first character denotes lower-class-temperature, and the second denotes upper-class-temperature, and the third denotes the lasting days of wet heat experiments
◆ 额定温度：在额定电压下，电容器可以连续工作的最大环境温度
Rated Temperature: the maximum fault-free ambient temperature under rated voltage
◆ 上限工作温度：在不通风，以及电容器可以连续工作的温度下，测得电容器外壳的最大温度
Upper Limit Working Temperature: the maximum fault-free ambient temperature under rated voltage
◆ 容量温度系数：当温度每变化一度时，电容量的相对变化值
Capacitance Temperature-Coefficient: the relative change value when the temperatures change 1℃
◆ 损耗角正切（tgδ）:在规定频率下的正弦波，其阻抗与电抗的比值
Dissipation Factor (tgδ): the ratio of resistance to reactance under sinusoid of specific frequency
◆ 绝缘电阻（IR）/ 时间常数：绝缘电阻用MΩ表示，在规定电压下充电一分钟后测得
Insulation Resistance (IR) / Time Constant: the insulation resistance (MΩ) after lminute charging under specific voltage
◆ 时间常数用下列公式计算：τ= RC
Time Constant is Calculated as :τ= RC
◆ 电容器的时间常数τ在数值上等于电容器自行放电后，其两端电压降到充电电压值的36.8%所经过的时间
The time constant of a capacitor equals to the duration between when the discharge begins and when the terminal voltage decreases to 36.8% of the charging voltage
