DSH 588 Verification of main contact position, position of the handle

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

DSH 588 & p. x) o6 x7 }& J8 y9 |: |! J

Verification of main contact position, position of the handle 0 z) ~# E( ]: d3 }) x! |( ^& R* J

8.2.5.3.2 of IEC60947-1 and 8.3.3.9 of IEC60947-2

60947-1(ed.1);am1 & 60947-1(ed.2) & 60947-1(ed.2);am1;am2 & 60947-1(ed.3) & 60947-1(ed.3);am1;am2 & 60947-1(ed.3);am2 & 60947-1(ed.4) & 60947-1(ed.5) & 60947-1(ed.5);am1 & 60947-2(ed.1);am1 & 60947-2(ed.2) & 60947-2(ed.2);am1;am2 & 60947-2(ed.3) - P. V  F$ S# p5 s' l* [; o

, j; {' M0 K" |2 y& rStandard(s): IEC60947-1, IEC60947-
2, IEC60947-3
( F* R' }8 X% F$ d( ^( uSub clause(s):
9 l2 S' S* Y$ C8.2.5.3.2 of IEC60947-1 and
' x# \" }& w+ r. i, T, ]; r8.3.3.9 of IEC60947-2
. |( u" O8 E  u5 d5 G$ E0 XSheet No.
& y: R9 u, U% i4 q2 d0 dDSH 588
Subject:
# w% U6 Y. L; v% X! r; s9 XVerification of main contact
position, position of the handle
1 Q' p+ ^7 Q8 S2 h: mKey words:
- suitable for isolation
- indication of contact
/ Q0 @' Y; H# \4 y  R4 l# k, ^position
7 o% l! |3 M% C' CDecision approved
2 t; o' f* ?# I0 g& O+ ]1 S9 hduring the CTL Plenary
- K/ x5 k9 z3 Y( cMeeting 2006
Question:
Verification of the main contact position is conducted only on products suitable for isolation. This is an
# r: y& S: |: M" k" n( madditional requirement to be verified. With respect to this test, the following two questions gave rise to
6 R4 O7 [: b- @/ ^9 H' q, hdiscussions
: d# q: z/ d4 J% Q2 N+ GQ1: When after the 3F test, the indicator comes to rest in a position between the trip and open position (which
( P, W7 K/ S9 \9 p* wis not the tripped or open position as indicated on the product), is this a pass when tested according 8.2.5.3 of
1 y: N  M9 N. [7 OIEC60947-1?
4 n* Y: C5 p8 L0 XQ2: If the answer of Q1 is yes, is this in conflict with the general constructional requirements of 7.1.5 or how
should section 7.1.6.1 (additional constructional requirements) be interpreted?
" O# y$ I, Y; o$ P' CDecision:
There are two possibilities, depending on the features of the MCCB:
1) The indicator is the actuator, and it is the only position indicator, or
& Z( e3 C5 _% Q8 @5 Q2) There is an actuator that may show the operating position, but in addition there is a
separate position indicator.
For construction per item 1, this result is not acceptable
# E8 J! j4 s  b% M" W" LFor construction per item 2, the result described is acceptable if the separate position
indicator unambiguously shows the closed position, irrespective of the position of the
actuator.
Refer to IEC 60947-1, Clause 7.1.6.1