额定电压52kV及以下有串联间隙避雷器若干问题的探讨

Some Problems of Surge Arresters with Series Gaps of Rated Voltage 52 kV and Less

介绍了《额定电压52 kV及以下带串联间隙避雷器》标准的主要技术要求和试验方法,与JB/T 9672.2-2005标准的主要技术差异进行了比较论述,包括:避雷器额定电压、避雷器持续运行电压、避雷器动作负载试验、避雷器工频电压耐受时间特性试验、避雷器外套的绝缘耐受、避雷器冲击保护水平、避雷器长持续时间冲击电流耐受试验、避雷器局部放电试验、避雷器均压电流试验、避雷器短路电流试验、避雷器脱离器试验等,并提出了在进行加速老化试验及工频电压耐受时间特性试验时施加在避雷器上的工频电压值的建议。

The main technical requirements and test methods of the standard ＂surge arresters with series gaps of rated voltage 52 kV and less＂ are introduced, the main technical differences of JB / T 9672.2-2005 standard are compared to discussion, including： rated voltage of an arrester, continuous operating voltage of an arrester, operating duty test of an arrester, power-frequency withstand voltage versus time characteristics test of an arrester, insulation withstand of the arrester housing, impulse protective level of an attester, long-duration current impulse withstand test of an arrester, partial discharge test of an arrester, grading current test of an arrester, short-circuit current test of an arrester, test of arrester disconnector, etc. and recommendations for the power-frequency voltage value is applied to the arrester during the accelerated ageing test and power-frequency withstand voltage versus time characteristics are proposed.