项目/item

标准/standard

测试方法/testing method

外观与尺寸

appearance & dimensions

外观无显著损伤，尺寸在标准范围内。

no marked defect on appearance form and dimensions are within specified range.

检查电容器表面看得见的、明显的损伤。

the capacitor shall be inspected by naked for visible evidence of defect.

尺寸使用游标卡尺测量。

dimensions shall be measured with slide calipers.

印 字

marking

清晰易辨。

to be easily legible.

目视检查。

the capacitor shall be inspected by naked eyes.

容 量

capacitance

在误差范围内。

within specified tolerance.

容量和损耗角正切测量在25±2℃的条件下，使用1±0.1khz、1.0vrms。

the capacitance and dissipation factor shall be measured at 25±2℃ with 1±0.1khz and 1.0vrms.

损耗角正切

dissipation factor

0.005Zui大。

0.005max.

试验电压

test voltage

无失效。

no failure.

在电容器两导线间施加23kvdc额定电压、充放电流50maZui大，1~5 秒钟无伤害。

the capacitor shall not be damage when23kvdc rated voltage with charging current 50ma max are applied between the lead wires for 1~5 second.

绝缘电阻

insulation resistance

10000mωZui小。

10000mω min.

绝缘电阻测试电压为额定电压(额定电压在500vdc以上使用500vdc)、充电时间为60秒。

the insulation resistance shall be measured withrated voltage (above 500vdc rated voltage tested by 500vdc) within 60±5 second of charging.

温度特性

temperature characteristic

在-25至+85℃的温度范围内容量变化率在-30%~+ 20%/℃

capacitance change within-30%~+ 20%/℃ and temperature characteristic guarantee is -25 to +85℃

温度特性测试需按照+25℃→-25℃→+25℃→+85℃→+25℃的步骤进行。

the capacitor measurement shall be made at each step specified in +25℃→-25℃→+25℃→+85℃→+25℃.