DSH 466 Screws and connections

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广东安规检测
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E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 466 . v7 e2 ?* o0 K/ G 6 ], L& W+ S% B/ S ' N# m0 ?' P# h( N7 I6 V

Screws and connections % R) r3 Y7 R* Y0 U  G6 _* l

28

60335-1(ed.2) / z) E3 Y  D6 U6 N

7 z( R: G& ~5 _' b- ?Standard: IEC 60335-1:1976, 2nd Ed.
; d( z7 M' X5 F' F2 G# pSub clause: 28
% Q' V; ^$ I, {% n$ zSheet No. DSH-466
% T& {( a3 ^6 w0 P5 {7 M2 bSubject: Screws and connections
) y2 M% |  s0 O% |3 q' AKey words: - torque test
2 |1 Q3 N1 F- O& \Decision taken at the 40th CTL meeting 2003
, C3 _2 ?" r/ z/ PQuestion:
7 D! r2 _/ v8 ]# |9 e4 S4 pHow many times shall screws be tightened and loosened during the torque test in view of
0 L2 n- {5 l4 |0 S$ f# U6 |previous tests?
; o9 ?4 E* u' PRationale:
- y, A. O* a1 D% G& @6 cSee question.
% A2 f6 s' g2 S- b+ p4 R5 b9 J( aDecision:
2 [' T3 F+ q& J8 @: ], i# s% {; HTests have to be carried out as stated in sub-clause 4.2 of IEC 335-1:1991. The tests are
+ u3 H  K! f* I/ jmade on a single sample as delivered, which shall withstand all the relevant tests.
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1 @  {5 ]% q* s/ }$ U" j- }