【正文】
t /concrete floor五、試驗(yàn)步驟/要點(diǎn) test process 測(cè)試條件:測(cè)試樣放置在冰箱內(nèi)保持7℃16小時(shí)以上, 混凝土地面; condition: temperature : tool in 7℃ environment for more than 16hours// concrete floor 1.實(shí)驗(yàn)前測(cè)量空載參數(shù)及泄漏電流并做記錄; before test ,test for current /power/and leak current 2.選擇樣品最薄弱點(diǎn)(可先進(jìn)行摸底實(shí)驗(yàn),找出最薄弱點(diǎn)),每個(gè)樣品最少選擇3個(gè)不同位置來(lái)選擇跌落點(diǎn);工具從3英尺高處自由跌落到混凝土平面上,每個(gè)樣品的最薄弱點(diǎn),跌落3次; select the most weakness of tool (the operator can try dropping to get which are weakness), every tool must drop 3side. Drop the tool from 3Ft freely to concrete floor , make sure every weakness drop 3 time. 3.若第一臺(tái)失效,換第二臺(tái)在同一點(diǎn)跌落,若通過(guò),則實(shí)驗(yàn)通過(guò);若失效,換第三臺(tái)在同一位置繼續(xù)跌落; if the first one fail, drop the second on the same side 。if it pass the test is OK. If the second fail , drop the third on the same side as the side of second failure side.4. 每次跌落后要測(cè)量空載參數(shù)并記錄; test tool’s parameter (such as current /power ) and record after drop. 5.經(jīng)過(guò)所有跌落后,測(cè)試泄漏電流檢查并記錄;check leak current after finished all drop .6. 經(jīng)過(guò)所有跌落實(shí)驗(yàn)后,工具應(yīng)能承受相應(yīng)的耐電壓實(shí)驗(yàn),而不發(fā)生 擊穿或閃絡(luò); Do hipot test ,check if the tools can pass.六、判 斷標(biāo)準(zhǔn) judgement standard 樣品經(jīng)過(guò)跌落實(shí)驗(yàn)后,電氣及機(jī)械性能安全,不能喪失功能即為合格;(“功能”是指使用者所期望的工具應(yīng)具有的合適的使用能力。技師如果能夠相當(dāng)簡(jiǎn)單的修理和改正被損壞的部分,那么這些影響功能的損壞是可以允許的。如果工具的精度嚴(yán)重超過(guò)了范圍,或者需要控制工具的手柄斷裂,有元件或電線暴露于使用者,那么實(shí)驗(yàn)認(rèn)為失敗。輕微的凹陷和裂紋,以及不被使用者注意的精度變化是可以接受的.) If tool’s function is normal and no electrical and mechanical danger after finished test , it pass the test . (notes: its function mean proper use ability. If parts or metal are bare(can be dangerous), it fail in the test . light distortion or crack can be permitted) 七、相關(guān)記錄 test record1.每次跌落前后的空載參數(shù)記錄; record parameter 2.跌落測(cè)試后的泄漏電流和介電強(qiáng)度檢查記錄; record leak current after drop 3.跌落中出現(xiàn)的問(wèn)題記錄; record failure phenomena 4.最后結(jié)果及分析記錄。 Test result and analysis record8 / 8