PDSH 893 Electrical connections

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

PDSH 893 6 x: L: x% }; L2 | 0 F- Y" n3 I  r$ B

Electrical connections " [! w% H0 k; @& d7 n5 r% d

7.2.1 ' x; T/ f. N# ^# t

60598-1(ed.3);am1 & 60598-1(ed.4);am1 & 60598-1(ed.5) & 60598-1(ed.6);am1 & 60598-1(ed.7) 7 d8 h3 G1 F% F- v$ v3 }6 a

Standard(s):
IEC 60598-1 All editions
Subclause(s): 7.2.1
2 _  {  G0 X6 g. WNo. Year DSH 0893 2010
9 t- Q8 Y7 ^7 V$ _6 I( XCategory: LITE Developed by: ETF5 OSM/LUM
Subject:
Electrical connections
7 Y* b7 h  V* y$ |; sKey words:
- Mechanical stress
- Terminal block
/ f% F) F& {; k0 x- Earth connection
Approved at the 49th CTL Plenary Meeting, in 2012
Question:
! P# j7 r$ y8 i1 u+ l, M$ k: Q0 HSometimes a terminal block for supply connection is directly fitted to a tag of luminaire housing (serving
+ X/ n  @9 `6 J! G4 eas internal earth connection) without additional fixation of the terminal block. As the rigidity of this tag is
( {: t" O: }. d& `- zmostly sufficient, it seems that the fixation of the terminal block is adequate. However during supply
2 u- Q' T- y# n- k4 ?( }connection unacceptable mechanical stresses to this earth connection can occur. Even in the case where
the terminal block is additionally fixed by means of plastic clips, an unbending fixation of the terminal
/ f/ q; M' l, [' S+ Fblock, in particular when serving the supply terminals, is not always guaranteed. Attention has to be paid
also to the question if a terminal block, fixed only to a tag of the luminaire housing, has to be regarded as
7 V! m/ \1 v2 M* l; Na loose terminal block.
6 d9 L- H: _( r, m+ lDecision:
+ u, }* q) i* H+ [& }Fixation of a terminal block, to a tag of the luminaire housing is only allowed if this connection
guarantees sufficient reliability. Additional fixation may be required to prevent unacceptable mechanical
stresses to the internal earth connection during supply connection.
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