DSH 306 Protection against Mechanical Hazards

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小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

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 306 ; n( r' H0 E9 I+ s9 ]! t6 E

Protection against Mechanical Hazards # h4 o; P/ x& _% {

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61010-1(ed.1);am1;am2 ' [9 b# t' h* W2 F' K! {

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; ]- q5 U0 b2 @7 G- r, C2 EStandard:
% A1 c; ~. _/ l6 N" IIEC 61010-
1:1990+A1:1992+A2:1995
Sub clause:
7.1
1 o9 p  n) d5 u1 v8 S3 R' V; TSheet n. 306
8 s% ]7 r" O( [4 W  @. SPage 1(1)
Subject:
Protection against mechanical
, v( p- }. |' ~2 l* J5 [6 d9 j, v7 hhazards
Key words:
- Guards
$ P1 L% L! C1 k7 E# U9 m- Access
/ V) [9 s" n9 bDecision taken by
ETF3 and confirmed
by CTL at its 38th
2 _% W, E# K8 A: r& u' W. A5 J0 lmeeting, in Toronto
$ g* _4 N4 J; _2 }2 a, cQuestion:
" \. Q7 }1 k1 t/ k! DThe requirement states that there must be no access to hazardous moving parts in Normal
$ J9 L1 M+ @$ Y& D  F: ZCondition and no parts must be expelled in Single Fault Condition. Does this mean it is
acceptable to have access to hazardous parts in Single Fault Condition?
Decision:
3 t& D) A" S3 o' z7 H3 }Mechanical parts are not subject to Single Fault Condition examination.
6 O3 ^7 [4 U* b; CExplanation:
Specific tests are included in the standard for strength, e.g. impact hammer test, which
3 a. V9 C# a) N0 y$ E# U; Hdetermine the acceptable strength of parts. It is not permissible to remove or presume
destruction of mechanical components in simulated Single Fault Conditions in addition to
# @) A9 f* H0 x/ W+ Y: @; gthese pre-determined requirements.
Where safety of a moving part is determined by an electronic control, for example a speed
5 {4 q" ?! C8 A! \: t# T$ z8 ycontrol circuit, then single fault analysis of this circuit must be performed if a hazard could
arise.
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