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|  DSH 587
1 [6 T5 t( I0 p5 j4 l+ B8 v. J- y
| Transformer intened to supply power to a saftey extra low voltage circuit (SELV)
6 c2 J- P7 I# t, n7 s2 c | 24.1; u r9 x6 y0 {
| 60730-1(ed.3);am1 V# v& C) `; A! U- C) G
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7 A% Y5 E9 {- b: n+ p6 x2 o9 a0 `Question:& b; ^6 G8 b2 B. i" M
Sub-clause 24.1 prescribes that “Transformers intended to supply power to a safety extra-low voltage
% I! M) `0 U1 ~" }circuit (SELV) shall be of the safety isolating type and shall comply with the relevant requirements of; J+ Q* q0 r) K+ W, x
IEC 61558-2-6.”.
5 o* O! }) K( W) s' tThis prescription does not allow the use of other types of transformers not covered by IEC 61558-2-6.$ X( X. a* R9 \. h, X/ e6 _
In case of testing of an electronic control with an integrated switch mode power supply (SMPS)4 S5 x4 o" d n' Y7 ]* D/ W5 k" t5 ]
intended to supply power to a safety extra low voltage circuit (SELV), what requirements shall be) Y( e ~1 p s- B/ \: ^! m
applied?" Z7 G9 C, ~' O% e& m9 h
Decision:# V6 Z& Y" G" N( W% |* N! h
The transformer shall comply with the relevant requirements of IEC 61558-2-17 for safety relating
; g4 S* O+ n- h) I9 l7 u: U( Ptransformers.6 m; _' e& N. w. z6 r
The entire switch mode power supply circuit (with the exception of the transformer) shall fulfil the
7 A7 z8 h: A7 O$ B# frequirements of IEC 60730-1 and relevant Annex H.3 ^. V) T; L' c9 b7 I* {
6 ]% n4 S% g. @2 a$ G5 ]/ p2 G2 k0 y! X% C
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发表于 2012-9-4 14:10
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