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保險絲使用壽命測試評估四步曲

2018-12-13 10:03:20 lipscall

在IEC標準中規定保險絲有“耐久性試驗法”，而UL標準中無類似的規定。

IEC標準中保險絲的耐久性試驗即是壽命試驗，其方法是，保險絲在正常溫度下使用直流電源測試：

1、額電流直到溫度穩定下測電壓降；

2、1.2倍額定電流1h 切斷電流15min。循環100次；

3、通電1.5In 1h 測電壓降；

4、同1法測電壓降。

要求：試驗前后電壓降變化不應超過10[%]，且標識仍清楚可辯，端帽焊點不出現任何劣變.

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保險絲使用壽命測試評估四步曲

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