（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 electricawufangbuc.07858.net tongdiaojd.71ix.comtongdiaoc.71ix.com tongdiaoj.71ix.comtongxianglu.71ix.comtongdiaoo.71ix.coml 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, which can be withstood by the gap after the first zero of power frequency continuous current, will not cause arc reburning.