（1）伏秒特性：指电压与时间的对应关系。
(1) Volt-second characteristics: refers to the corresponding relationship between voltage and time.
（2）工频续流：指雷电压或过电压放电结束，但工频电压仍作用在避雷器上，使其流过的工频短路接地电流。
(2) Power Frequency Continuous Current: refers to the end of lightning voltage or over-voltage discharge, but the power frequency voltage still acts on the arrester to make it flow through the power frequency short-circuit grounding current.
（3）绝缘强度自恢复能力：电气设备绝缘强度与时间的关系，即恢复到原来绝缘强度的快慢。
(3) Self-restoring ability of insulation strength: the relationship between the insulation strength of electrical equipment and time, that is, the speed of restoring the original insulation strength.
（4）避雷器的额定电压：把工频续流第一次过零后， 间隙所能承受的，不至于引起电弧重燃的最大工频电压，又称电弧电压。

(4) Surge arrester rated voltage: the maximum power frequency voltage, also known as arc voltage,xingtai.37ix.com.cnhengshui.37ix.com.cndingzhou.37ix.com.cntangshan.37ix.com.cncheng

de.37ix.com.cnlangfang.37ix.com.cn which can be withstood by the gap after the first zero of power frequency continuous current, will not cause arc reburning.