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|  PDSH 893
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$ t( E. r' i( ?' e/ P | Electrical connections8 W9 G. [- c- @8 ~2 J! K1 s, }
| 7.2.16 ?$ e; \' Z8 U% A V K* y
| 60598-1(ed.3);am1 & 60598-1(ed.4);am1 & 60598-1(ed.5) & 60598-1(ed.6);am1 & 60598-1(ed.7)5 U, y7 D- i: i, `' u' ^# x ^
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Standard(s):
3 ?2 n+ l) L' P% l$ f* k& }IEC 60598-1 All editions
6 q- i0 Q6 {: A* ]/ NSubclause(s): 7.2.1. v3 W# @( m& o
No. Year DSH 0893 2010& U7 D @) `8 o/ b) K
Category: LITE Developed by: ETF5 OSM/LUM+ v0 S5 ?" ~5 t: w( f8 t
Subject:. }- s% A! X/ w' X; I; @
Electrical connections$ q5 x8 K, { H. k h: }. z
Key words:/ z. M: `* b9 H3 C% _
- Mechanical stress+ g! u( A$ B5 `1 \& C: Q3 {" F4 b
- Terminal block% E% W2 Q. b( A5 s4 Y I
- Earth connection
0 Y# {; W d) `# b" H. gApproved at the 49th CTL Plenary Meeting, in 20126 _& _4 a/ A! B; W/ Z) v
Question:
' c. Z2 B Q/ o+ N' O7 vSometimes a terminal block for supply connection is directly fitted to a tag of luminaire housing (serving
" W$ s& q- ]. N* Was internal earth connection) without additional fixation of the terminal block. As the rigidity of this tag is2 X# k9 `6 [5 i6 }, E
mostly sufficient, it seems that the fixation of the terminal block is adequate. However during supply
# g" A$ M5 y Hconnection unacceptable mechanical stresses to this earth connection can occur. Even in the case where7 Y( L/ p0 E3 K. m* v; S2 j
the terminal block is additionally fixed by means of plastic clips, an unbending fixation of the terminal
+ p7 d+ L. |6 x1 nblock, in particular when serving the supply terminals, is not always guaranteed. Attention has to be paid
+ N/ U3 J& G* o9 E4 }1 m" Aalso to the question if a terminal block, fixed only to a tag of the luminaire housing, has to be regarded as$ K) \0 u" E8 W! O# F
a loose terminal block.
* A* t7 q7 V* K x' ]Decision:
' s" ] r: Q" o) D- YFixation of a terminal block, to a tag of the luminaire housing is only allowed if this connection, N9 i; Y# w; ^4 G, H
guarantees sufficient reliability. Additional fixation may be required to prevent unacceptable mechanical* @& Q A. g) S/ w" M. I9 S8 n
stresses to the internal earth connection during supply connection.
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