DSH 642 Markings

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DSH 642 $ e& g) u% G$ e 8 z! ^; V4 I! Q2 _

Markings

6.1.1 q) 6 W! C* t/ X( K! o0 a6 y

61643-1(ed.2) $ t7 A5 Z  K1 h) s: j5 a

Standard(s)-(year and edition):
9 o5 @: Y) ]6 Q6 BIEC 61643-1, 2nd edition, 2005-03
Sub clause(s):
7 ]# p2 o8 j3 S6.1.1 q)
# a( `( {$ \$ b% M9 T+ X1 A; i6 gDSH 642
9 R1 f4 w9 N- b; j8 ySubject:
3 o5 X9 x$ L8 l# C% SMarkings
& S# h% K4 }# m6 h3 }# ^Key words:
/ P- t0 }4 [4 e5 {0 e; X- marking
! G: {' w% x  q1 M+ T  R; L/ `- frequency
Approved by the 45th CTL plenary meeting 2008
Question:
Is it acceptable to mark only the type of current (e.g. a.c. or ~), but without giving the frequency?
0 W% T* y1 {# C7 Y0 Q" C  vRationale:
The standard itself limits to the frequency range of 48-62 Hz a.c.:
# R& P5 J; U4 N2.1.1 Frequency: frequency of the supply mains is between 48 Hz and 62 Hz a.c.
The marking requirement in the English IEC version reads:
/ N2 F) O  v; |" v6.1.1 q) Type of current: a.c. frequency or d.c., or both
The marking requirement in the French IEC version reads:
. ~/ }2 E0 S+ M6.1.1 q) Le type de courant: alternatif, continu ou les deux
This means only the English IEC version requires to mark the frequency.
+ C; U+ r8 e3 HDecision:
YES, it is acceptable to mark only the type of current (e.g. a.c. or ~) without giving the frequency, as the frequency is limited to the range of 48-62 Hz anyway and there is no safety implication.
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