Z: E; S. x0 ?. I7 \Standard(s)-(year and edition): , Y6 l/ ^7 D5 T5 KIEC 61643-1, 2nd edition, 2005-037 q9 a' W; `4 i# ~8 Y2 g- `( q! U
Sub clause(s):+ H1 D. G4 m, |5 @
6.1.1 q)5 q" s. K, n [. h1 |0 v" y
DSH 642: L2 ?# s' G; o, ?2 j, F
Subject: % `! j: e" q% N1 o( QMarkings 7 j* S3 L8 o4 |; {2 [! i8 d. I1 y! `Key words:8 j- p2 I- ?) P5 c
- marking" Y; s8 f+ n6 E- u# _4 C' z
- frequency4 t6 X! ^$ ]6 b0 C4 A1 ]$ L6 H! g
Approved by the 45th CTL plenary meeting 2008 6 d1 L7 q, b: t* x/ A3 OQuestion: 5 W) ^" \, I4 h7 JIs it acceptable to mark only the type of current (e.g. a.c. or ~), but without giving the frequency? h; F0 \! p# n( h8 d7 l0 G
Rationale:* b' q) A) |2 ~9 f& A. S$ l2 u
The standard itself limits to the frequency range of 48-62 Hz a.c.: . d; n: Y7 P3 S3 O0 P/ D2.1.1 Frequency: frequency of the supply mains is between 48 Hz and 62 Hz a.c.! t/ q0 A; K: Q& @! @
The marking requirement in the English IEC version reads: J& ] F. @! o; {4 L% Z0 y8 C1 L
6.1.1 q) Type of current: a.c. frequency or d.c., or both / n9 D" f4 B7 Y0 rThe marking requirement in the French IEC version reads:+ S8 b0 W" U8 R6 t) Y* j( V
6.1.1 q) Le type de courant: alternatif, continu ou les deux + x0 j, ~% S. B9 CThis means only the English IEC version requires to mark the frequency. # u. x; ^) }0 |/ Y, y: f, FDecision: " X+ P1 X: A2 N! W& j, ~0 `. jYES, 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. 8 t( \5 D9 x' G( y ! a- O4 A2 T9 V T+ }* B[attach]77214[/attach]& M( }2 f, l- c
DSH 642