避雷針耐電流測試

有些ESE避雷針廠商宣稱他們的避雷針可以耐雷擊電流200kA，但卻不敢明確寫出電流波型，就像是跑步跑了100圈，卻不敢說出1圈距離多遠。

ONAY OLP 214避雷針依照法國標準NF C 17-102:2011通過125kA(10/350μs)三次耐電流測試。該標準要求測試的參數如下：

	Ipeak (kA 10/350μs)	Q (A.s)	W/R (kJ/Ω)
法國標準NF C17-102:2011要求	100±10%	50±20%	2500±35%
OLP 214測試	125±10%	62.5±20%	3750±35%
備註：法國標準要求測試三次

由上表可知，NF C 17-102:2011不但要求峰值電流(Ipeak)，同時還要求Q和W/R，藉此避免廠商投機使用較小波型來魚目混珠。

根據IEEE C62.41.2-2002年版，A.5明文指出：

Limited tests conducted by some manufacturers and informally reported have indicated that the stress imposed on metal-oxide varistor (MOV) SPDs by a 10/350 µs test might be equivalent to the stress imposed by a standard 8/20 µs test, with a scaling factor in the order of 10, as shown in the third column of Table A.2. Therefore, by mutual agreement among the parties involved, a Class I test in accordance with Table A.2 might also be appropriate.

10/350μs的壓力約為8/20μs的10倍。根據IEEE標準推算，ONAY OLP214避雷針可以承受1250kA(8/20μs)電流測試。