一，低溫試驗方(fang)法

1，非散(san)熱試驗樣品溫度漸(jian)變的低溫試驗：將(jiang)試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)放入溫(wen)(wen)(wen)度(du)(du)為試(shi)(shi)(shi)驗(yan)(yan)室(shi)溫(wen)(wen)(wen)度(du)(du)的(de)(de)試(shi)(shi)(shi)驗(yan)(yan)箱(xiang)中，然后將(jiang)溫(wen)(wen)(wen)度(du)(du)調節(jie)到(dao)符合(he)相關規范規定(ding)(ding)(ding)的(de)(de)嚴酷等級溫(wen)(wen)(wen)度(du)(du)。當試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)溫(wen)(wen)(wen)度(du)(du)達到(dao)穩定(ding)(ding)(ding)后，在(zai)該條件下(xia)(xia)暴露到(dao)規定(ding)(ding)(ding)的(de)(de)持(chi)續(xu)(xu)時(shi)間。對于試(shi)(shi)(shi)驗(yan)(yan)時(shi)需要(yao)通電(dian)運行的(de)(de)試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)，應在(zai)試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)溫(wen)(wen)(wen)度(du)(du)達到(dao)穩定(ding)(ding)(ding)后通電(dian)，根據需要(yao)進行功能檢測。這種情(qing)況下(xia)(xia)，可(ke)能還需要(yao)一段時(shi)間達到(dao)溫(wen)(wen)(wen)度(du)(du)穩定(ding)(ding)(ding)，然后試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)在(zai)該低溫(wen)(wen)(wen)條件下(xia)(xia)暴露到(dao)相關規范規定(ding)(ding)(ding)的(de)(de)持(chi)續(xu)(xu)時(shi)間。試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)通常在(zai)非工作狀態下(xia)(xia)進行試(shi)(shi)(shi)驗(yan)(yan)。本試(shi)(shi)(shi)驗(yan)(yan)通常采用(yong)高氣流循環。

2，散熱試(shi)驗(yan)(yan)(yan)樣(yang)品(pin)溫(wen)度漸變的低溫(wen)試(shi)驗(yan)(yan)(yan)——試(shi)驗(yan)(yan)(yan)樣(yang)品(pin)在溫(wen)度開始穩定(ding)后通(tong)電：如果需(xu)要(yao)(yao)，可通過試(shi)(shi)驗(yan)(yan)確定(ding)(ding)試(shi)(shi)驗(yan)(yan)箱(xiang)能否(fou)滿足低氣(qi)流(liu)速(su)度(du)(du)(du)的(de)(de)(de)要(yao)(yao)求(qiu)。將試(shi)(shi)驗(yan)(yan)樣品放入溫(wen)度(du)(du)(du)為試(shi)(shi)驗(yan)(yan)室(shi)溫(wen)度(du)(du)(du)等等試(shi)(shi)驗(yan)(yan)箱(xiang)中，然后將溫(wen)度(du)(du)(du)調節(jie)到符(fu)合相(xiang)(xiang)關規(gui)范(fan)規(gui)定(ding)(ding)的(de)(de)(de)嚴酷等級溫(wen)度(du)(du)(du)。給(gei)試(shi)(shi)驗(yan)(yan)樣品通電或(huo)加(jia)電負載(zai)，檢查試(shi)(shi)驗(yan)(yan)樣品以確定(ding)(ding)其(qi)功(gong)能是否(fou)符(fu)合相(xiang)(xiang)關規(gui)范(fan)要(yao)(yao)求(qiu)。試(shi)(shi)驗(yan)(yan)樣品應按照相(xiang)(xiang)關規(gui)范(fan)規(gui)定(ding)(ding)的(de)(de)(de)工作循(xun)環(huan)(huan)和負載(zai)條(tiao)件處于運行狀(zhuang)態(tai)。當(dang)試(shi)(shi)驗(yan)(yan)樣品的(de)(de)(de)溫(wen)度(du)(du)(du)達到穩定(ding)(ding)后，在(zai)該條(tiao)件下暴露到相(xiang)(xiang)關規(gui)范(fan)規(gui)定(ding)(ding)的(de)(de)(de)持續時間(jian)。本試(shi)(shi)驗(yan)(yan)通常采用低氣(qi)流(liu)速(su)度(du)(du)(du)循(xun)環(huan)(huan)。

3，散熱試驗樣(yang)品(pin)(pin)溫度漸變的低(di)溫試驗——試驗樣(yang)品(pin)(pin)在整個試驗過程通電(dian)：如果需要，可通過試(shi)驗(yan)(yan)確定(ding)試(shi)驗(yan)(yan)箱能否滿足(zu)低氣(qi)流速度(du)的要求。將(jiang)試(shi)驗(yan)(yan)樣(yang)品放入溫度(du)為試(shi)驗(yan)(yan)室溫度(du)等等試(shi)驗(yan)(yan)箱中。給試(shi)驗(yan)(yan)樣(yang)品通電并根據需要進行功能檢測(ce)。然(ran)后(hou)將(jiang)溫度(du)調節到(dao)(dao)符合相關規(gui)范規(gui)定(ding)的嚴酷等級溫度(du)。當試(shi)驗(yan)(yan)樣(yang)品的溫度(du)達到(dao)(dao)穩定(ding)后(hou)，在(zai)該條件下(xia)暴露到(dao)(dao)規(gui)定(ding)的持續(xu)時間。本試(shi)驗(yan)(yan)通常采(cai)用(yong)低氣(qi)流速度(du)循環。

 二，高溫(wen)試驗方法

1，非散熱(re)試驗(yan)(yan)樣品溫(wen)度漸變的高溫(wen)溫(wen)試驗(yan)(yan)：將試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)放入(ru)溫(wen)(wen)度(du)(du)為試(shi)(shi)(shi)驗(yan)(yan)室溫(wen)(wen)度(du)(du)的試(shi)(shi)(shi)驗(yan)(yan)箱中，然后(hou)將溫(wen)(wen)度(du)(du)調(diao)節到符合相(xiang)關規范(fan)規定(ding)(ding)(ding)的嚴酷等級溫(wen)(wen)度(du)(du)。當試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)溫(wen)(wen)度(du)(du)達(da)(da)到穩定(ding)(ding)(ding)后(hou)，在該(gai)條(tiao)件下暴露到規定(ding)(ding)(ding)的持續時(shi)(shi)間(jian)。對于試(shi)(shi)(shi)驗(yan)(yan)時(shi)(shi)需要(yao)通(tong)(tong)電運行的試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)，應在試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)溫(wen)(wen)度(du)(du)達(da)(da)到穩定(ding)(ding)(ding)后(hou)通(tong)(tong)電，根據(ju)需要(yao)進行功能檢測。這種情況(kuang)下，可能還(huan)需要(yao)一段時(shi)(shi)間(jian)達(da)(da)到溫(wen)(wen)度(du)(du)穩定(ding)(ding)(ding)，然后(hou)試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)在該(gai)高溫(wen)(wen)條(tiao)件下暴露到相(xiang)關規范(fan)規定(ding)(ding)(ding)的持續時(shi)(shi)間(jian)。試(shi)(shi)(shi)驗(yan)(yan)樣品(pin)(pin)(pin)通(tong)(tong)常在非工作(zuo)狀態下進行試(shi)(shi)(shi)驗(yan)(yan)。本試(shi)(shi)(shi)驗(yan)(yan)通(tong)(tong)常采用高氣流(liu)循環。

2，散熱試驗(yan)樣(yang)品溫度漸變的高溫試驗(yan)——試驗(yan)樣(yang)品在升溫調(diao)節期不(bu)通電：如果需要，可通(tong)過(guo)試(shi)驗(yan)(yan)確定(ding)試(shi)驗(yan)(yan)箱(xiang)能否(fou)滿(man)足(zu)低氣(qi)流(liu)速度(du)(du)的(de)要求。將試(shi)驗(yan)(yan)樣(yang)品(pin)放入溫度(du)(du)為試(shi)驗(yan)(yan)室溫度(du)(du)等等試(shi)驗(yan)(yan)箱(xiang)中，然后將溫度(du)(du)調節(jie)到(dao)符合相(xiang)關(guan)規范規定(ding)的(de)嚴酷等級溫度(du)(du)。給試(shi)驗(yan)(yan)樣(yang)品(pin)通(tong)電(dian)。當(dang)試(shi)驗(yan)(yan)樣(yang)品(pin)的(de)溫度(du)(du)達到(dao)穩(wen)定(ding)后，在該條件下暴露到(dao)相(xiang)關(guan)規范規定(ding)的(de)持續時(shi)間。本(ben)試(shi)驗(yan)(yan)通(tong)常采用低氣(qi)流(liu)速度(du)(du)循(xun)環。

3，散熱試(shi)驗樣品(pin)溫(wen)度漸變的高溫(wen)試(shi)驗——試(shi)驗樣品(pin)在(zai)整個試(shi)驗過程(cheng)通電：如果需要(yao)，可通(tong)過試(shi)驗(yan)(yan)確定試(shi)驗(yan)(yan)箱能否滿足低氣(qi)流速度(du)(du)(du)(du)的(de)要(yao)求。將試(shi)驗(yan)(yan)樣品(pin)(pin)放入溫(wen)(wen)度(du)(du)(du)(du)為試(shi)驗(yan)(yan)室溫(wen)(wen)度(du)(du)(du)(du)等(deng)(deng)等(deng)(deng)試(shi)驗(yan)(yan)箱中。給試(shi)驗(yan)(yan)樣品(pin)(pin)通(tong)電并根據需要(yao)進(jin)行功能檢測。然后(hou)將溫(wen)(wen)度(du)(du)(du)(du)調(diao)節到(dao)符合相關規范規定的(de)嚴酷等(deng)(deng)級溫(wen)(wen)度(du)(du)(du)(du)。當試(shi)驗(yan)(yan)樣品(pin)(pin)的(de)溫(wen)(wen)度(du)(du)(du)(du)達(da)到(dao)穩定后(hou)，在該條(tiao)件下(xia)暴露到(dao)規定的(de)持(chi)續(xu)時間。本試(shi)驗(yan)(yan)通(tong)常采用(yong)低氣(qi)流速度(du)(du)(du)(du)循環。