DSH 389 Marking and instructions

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DSH 389

Marking and instructions ( g( ~8 t4 a9 C9 ~& j9 K+ a" i

1.7.1 4 E9 |* d" a) n; U

60950(ed.2);am1-am4

- N; e$ q' b. D) W* _3 ^& OStandard:
IEC 60950 (1991) 2nd ed., Amdts.1
(1992), 2 (1993), 3 (1995), 4 (1996)
. K! ]/ ]# b  t: y' z  rSub clause:
1.7.1
Sheet n. 389
Page 1(1)
1 l4 L8 ^3 K7 [' m0 \Subject:
Marking and instructions
Key words:
2 Y- n1 N4 l1 }: v- Marking
- Instructions
# z- G0 w. @. H7 K6 ADecision confirmed
- _8 p7 i- J( e$ V6 t0 w' }# Bat CTL 38th meeting.
Question:
A piece of ITE (e.g. telecommunications rack) has multiple modular power supplies that are
4 B( `# [+ g$ l! k, eremovable. The supply connection (e.g. power supply cord) to the equipment terminates directly
to the power supplies. Is it permissible for the marked electrical ratings in the individual power
supplies to be used to comply with the electrical portion of the equipment’s power rating marking
: A; v' z! m6 @# z(clause 1.7.1), or must the equipment be provided with a separate electrical rating marking?
+ y$ r0 A2 P3 v2 [8 v* a4 q! [Decision:
The electrical rating markings on the power supplies may be relied upon to meet the electrical
8 y7 J& {% S, ?) ~  _portion of the equipment’s power rating markings if (a) the mains supply connection terminates
! t% c% y) o3 h- `" hdirectly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the
3 W' F- `% V. V, p5 M2 y5 p3 fequipment has a separate single marking that covers the other aspects of the power rating
: O. v% f- l9 Z! c, u6 B& Rmarking required by 1.7.1 e.g., manufacturer, model.

& N/ Q, }% \, w$ P& Y$ q
( `: ]- [: b3 P" t0 C+ r6 o: A8 p  m