中 華 人 民 共 和 國 國 家 標 準
GB/T 2423.55-2006八EC 60068-2-75:1997
        電工電子產品環(huán)境試驗
第2部分:試驗方法 試驗Eh:錘擊試驗
Environmental testing for electric and electronic products-Part 2: Test
                      methods- Test Eh:Hammer tests
<IEC 60068-2-75:1997, Environmental testing-
Part 2: Tests-Test Eh: Hammer tests, IDT）
2006-02-15發(fā)布 2006-06-01實施

前言 ····························，··················································································…… 皿
引言 ··················································································································…… IV
1 范 圍 ···············································································，·······························…… 1
2 規(guī)范性引用文件 ···········································································，，·····...……，，...…… 1
3 錘擊試驗方法通則 ·································································，···············..……，… … 1
3. 1 術語和定義 ······················································，·················，········，·················…… 1
3.2 嚴酷度 ···········································································································一 1
3.3 試驗裝置 ·······································································，·················，············…… 2
3. 4 預處理 ···········································，····························································…… 3
3. 5 初始檢測 ··················································，·····················，···········，·················…… 3
3. 6 試驗 ·，·····，······，·····，·····，················································································…… 3
3. 7 恢復 ········································，···································································…… 3
3.8 zui終檢測 ·····································································································…… 3
3.9 有關規(guī)范應提供的信息 ···························································......……，............…… 3
4 試驗Eha:擺錘··········································································，······················…… 4
4.1 定義 ···········································································································…… 4
4. 2 試驗裝置 ····································································································…… 4
4. 3 跌落高度 ························································································，············…… 4
4.4 試驗 ·，··········································································································…… 5
5 試驗Ehb:彈簧錘······························································.·······················......…… 5
5. 1 試驗裝置 ···························································，·······，··································…… 5
5. 2 重力的影響 ·················································，···············································…… 6
5. 3 校準 ········································································································…… 6
6 試驗Ehc:垂直落錘 ···············································································，·······......…… 6
6. 1 定義 ············································································································…… 6
6. 2 試驗裝置 ·····················································································，············…… 6
6.3 跌落高度 ········································································································… 6
附錄A（規(guī)范性附錄） 撞擊元件的形狀 ·····································································…… 7
附錄B（規(guī)范性附錄） 彈簧錘的校準···········································································…… 9
B. 1 校準原理 ··········································，················································..·.·······…… 9
B. 2 校準裝置的結構 ···········································，································.................…… 9
B. 3 校準裝置的校準方法 ·····································································，·……，.，，.....……，9
B. 4 校準裝置的使用 ·······························，·······································……，.，......····…… 10
附錄C（資料性附錄） 導則 ································································...............……，....14
C. 1 撞擊試驗適用范圍 ···············································...................................……，.… 14
C. 2 試驗裝置的選擇 ····················································································......…… 14
C. 3 嚴酷度的選擇 ·····································································，··.....……，.……，·..·… 14
C. 4 試驗的有關資料 ··································································，··················..·..…… 14

GB/T 2423.55-2006/IEC 60068-2-75:1997
附錄 D（資料性附錄） 擺錘試驗裝置示例 ······，，···，··········，····，·················，···········，，·····…… 15
附錄 E（資料性附錄） 彈簧錘試驗裝置 ···，·。··。············· ·······，···，，1··········，·，，，4···‘一 18
圖1撞擊元件的典型示意圖···················，································································……2
圖2 測量點 ··········，······················‘··，，·····，····················，········，······························…… 5
圖3 2）的釋放端形狀 ·············································................................................5
圖A. I不超過IJ的撞擊元件的示例···············，·····，···············，···········、·············，，··…‘’·“‘’7
圖A.2  2）的撞擊元件的示例 ·····，·· ，，，·、·······，，，···········11·，，·，··。····，，，··】·····，，····、…7
圖A.3  5）的撞擊元件的示例 ············，······················。············，································一 7
圖A. 4 10）的撞擊元件的示例 ，······································，·················，·········，·······……8
圖A.5  20）的撞擊元件的示例 ·，·······，，，·······4·····，·，···············，，，，，，·············，，·.... ----.... 8
圖A.6 50J的撞擊元件的示例 ·····························，，，···········，·····，···························……8
圖B. 1 校準裝置 ····························，，·········，·····················，·······················，·······…… 10
圖 B. 2 擺“c’’ ···············································，······················，，·······」····················…… 11
圖B. 3 擺“c’’的鋼彈簧 ········1········，，·‘··············，········11········，·······1············，·······…… 11
圖B. 4 校準裝置的局部 ，.............................········，·，·，··· ·，···，······‘·······，·······…… 12
圖B. 5校準裝置的校準示意 ·‘··············，····················，···········································一 13
圖B. 6 分度盤“f······，，········‘·············，，······‘·，·········，···········，，·····························…… 13
圖 D. 1 擺錘試驗裝置 ，，·，···】」············，·······························，········」」····················…… 15
圖D. 2 能量小于 1J的擺錘的撞擊元件 ，，·················，·，···············，，，，···············，····，····…… 16
圖D. 3 樣品安裝座 ······，···，············，，····················，，··，·······，，，，，··，···············，，········一 16
圖D. 4 嵌人式開關的轉換安裝 ···········，·································‘······························……17
圖D. 5 燈座的轉換安裝 ·····················，·········，······，··············，····················，······‘…… 17
圖 E. 1 彈簧錘試驗裝置 ，···114···1····，，····11·····，，，，，···· ·······，，····· ···，·····，，，，，。 … 18
心
‘
表 1 撞擊元件特性 ·……
S
表 2 跌落高度 ·······……
                   ， A
上
︸
表 C. 1 能量級 J
， 只
占 ︺
表 E.1 撞擊元件的動能

GB/T 2423.55-2006/IEC 60068-2-75:1997
"li 呂
    GB/T 2423《電工電子產品環(huán)境試驗 第 2部分 試驗方法》按試驗方法分為若干部分。
    本部分為 GB/T 2423的第 55部分。
    本部分等同采用 IEC 60068-2-75:1997《環(huán)境試驗 第 2部分:試驗方法 試驗 Eh:錘擊試驗））（英
文版）。
    本部分是*版（（IEC 60068-2-75是*版）
    本部分等同采用的IEC 60068-2-75由IEC導則 104確定為安全性基礎標準
    本部分等同采用的IEC 60068-2-75由IEC導則 108確定作為基本環(huán)境試驗標準發(fā)布。
    為便于使用，本部分做了下列編輯性修改:
    a）   "IEC 60068的本部分”一詞改為“GB/T 2423的本部分”或“本部分，’;
    b） 用小數(shù)點“.”代替作為小數(shù)點的逗號“，”;
    C） 刪除標準的前言;
    d） 為了與現(xiàn)有 GB/T 2423其他各部分的名稱一致而將本部分改為當前名稱;
    e） 本部分在國標轉化過程中與 IEC 60068-2-75*版的出版有 5年的滯后。失去了5年的過渡
        期。為了便于使用時掌握，在“IEC 60068-2-75:1997*版1997年 8月出版的5年后將帶括
        號的量值刪除”語句中增加了版本號和出版日期，并保持與原文一致。
    本部分引用的規(guī)范性文件中有一部分目前尚未轉化為等同采用的國家標準，在引用這些規(guī)范性文
件時仍以 IEC/ISO的編號列出。
    本部分附錄 A和附錄 B為規(guī)范性附錄;附錄 C、附錄 D和附錄E為資料性附錄
    本部分由信息產業(yè)部電子第五研究所提出。
    本部分由中國電工電子產品環(huán)境條件與環(huán)境試驗標準化技術委員會歸口。
    本部分起草單位:信息產業(yè)部電子第五研究所、上海市電子儀表標準計量測試所。
    本部分主要起草人:盧兆明、紀春陽、龔彩萍、王學智、王忠。

GB/T 2423.55-2006/IEC 60068-2-75:1997
電工電子產品環(huán)境試驗
第 Z部分:試驗方法 試驗 Eh:錘擊試驗
范 圍
    GB/T 2423的本部分提供了對樣品進行包括撞擊的次數(shù)、能量和實施方向等規(guī)定的嚴酷度條件下
實施撞擊的三種等效的試驗方法。適用于按電氣安全性條款評定產品的堅固程度
    本部分適用于從 。.14焦耳（J）至 50焦耳（J）能量級
    本部分給出了適用于試驗的三種裝置。附錄 C提供了這方面的指南。
2 規(guī)范性引用文件
    下列文件中的條款通過本部分的引用而成為本部分的條款。凡是注日期的引用文件，其隨后所有
的修改單（不包括勘誤的內容）或修訂版均不適用于本部分，然而，鼓勵根據(jù)本部分達成協(xié)議的各方研究
是否可使用這些文件的版本。凡是不注日期的引用文件，其版本適用于本部分。
    GB/T 2421-1999 電工電子產品環(huán)境試驗 第 1部分:總則（idt IEC 60068-1:1988）
    GB/T 4796-2001 電T電子產品環(huán)境參數(shù)分類及其嚴酷程度分級 （idt IEC 60721-1;1990,
Amendment 1:1992 ）
    ISO 1052:1982 一般工程用鋼
    ISO 2039-2:1987 塑料洛氏硬度試驗方法
    ISO 2041:1990 機械振動和沖擊 術語
    ISO 2768-1:1989 一般公差 線性尺寸的未注公差
    ISO 6508-1986   6}-W # 1;1 砰彥試賒一洛 氏試盼 （A一H一〔、一仆 E一F一幾一H一K                                           kJ3）
錘擊試驗方法通則
3. 1 術語和定義
    GB/T 2423的本部分采用 ISO 2041:1990或 GB/T 2421-1999規(guī)定的術語和定義。下列附加的
術語和定義僅適用于本部分。第 4章和第 6章的試驗的術語將在對應的章里給出。
3.1.1
    固定點 fixing point
    樣品固定時，夾具與樣品的接觸點。
3. 1.2
    等效質f  equivalment mass
    試驗裝置的撞擊元件以及共有速度提供撞擊能量的有關部分的質量。
    注:擺錘裝置的特殊情況，見4. 1. 30
32 嚴酷度
3.2. 1 概述
    在 3. 2.2給出了供選擇的撞擊能量，撞擊次數(shù)見 3. 2. 3,
3.2.2 撞擊能f
    有關規(guī)范應確定下列能量值之一作為撞擊能量。