DSH 310 Components

小米

广东安规检测
有限公司提供：

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

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DSH 310

Components / I) p" K6 ~  ~2 r) M0 V

14

61010-1(ed.1);am1;am2 , d/ {( J* q! @+ e

Standard:
+ F( W; m5 }6 M; s, N. JIEC 61010-
1:1990+A1:1992+A2:1995
7 `' u3 m  M0 Z- o' a1 c- `, i2 p3 bSub clause:
14
) ?$ h: g- N$ K% NSheet n. 310
Page 1(1)
Subject:
Components
8 z' X# y" Q' A) K4 N4 n$ f$ h0 XKey words:
- Transient
- Suppressor
( p: ^2 H+ ~' x/ O: W0 [" w/ v- Mains
3 Z' R2 {1 w# WDecision taken by
ETF3 and confirmed
9 y/ ]7 [7 C" i% Pby CTL at its 38th
meeting, in Toronto
2 I1 [  `# N# J% cQuestion:
Is the use of transient suppressor devices such as varistors accepted in equipment and, if so,
, D( }) X6 R- xunder what conditions
Decision:
" j; Z8 |( _- s0 M3 R( RVaristors are accepted in the following conditions:
' k8 T/ ~3 z2 g. B! M, @6 p, ]: j1 Between Live and neutral conductors after the mains fuse.
1 }8 N; T# X; c! \+ O* KNo component approval demanded.
2 Between Live and neutral conductors, before the mains fuse.
Only accepted if the component is approved to an international standard (IEC 61051 or
9 k, F; s9 {/ @( i4 ECECC 42200)
3 Between Live and Earth conductors (before or after the mains fuse)
) |/ s' a) Z' R0 q; o  }0 w( }a) pluggable equipment
devices are not accepted
b) permanently installed equipment
devices are accepted as in 1 and 2 above.
8 {% A8 ^1 M/ p/ a; H& qNote: Components shall be physically mounted in such a way that no hazard can arise in the
event of the device failing catastrophically.
$ C7 R* @% l4 V2 f, sExplanation:
3 G& q, c1 i( J) M. pVaristors are semi-conductor devices and therefore, cannot be treated as high integrity
devices and must therefore, always have additional protection.
Varistors in the equipment or installation coupled with safe construction and approvals meet
; ~& D  Y/ h/ g2 zthese requirements except where the disconnection of earth is possible as a single fault. In
this case, the slow deterioration of the device with time, allowing an increase in earth
: V' z- `: ^( }4 k7 E% N) _leakage current, is not acceptable and the devices are, therefore, not allowed.
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