DSH 389 Marking and instructions

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DSH 389 ; M0 a0 d9 M8 n; z+ N

Marking and instructions 7 ]; P0 g( A) b! {) W9 \, `

1.7.1

60950(ed.2);am1-am4 + A9 Q6 R! z" n+ w1 \8 C7 m

& c4 [* o% b, X( K- \: T& oStandard:
; g- S5 U2 u4 X  ~2 s/ M- GIEC 60950 (1991) 2nd ed., Amdts.1
' d' s1 C4 _4 w8 E, w& S( i( r& r(1992), 2 (1993), 3 (1995), 4 (1996)
Sub clause:
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Sheet n. 389
Page 1(1)
Subject:
& y2 Y3 r* q% p8 ~2 ZMarking and instructions
0 |* x3 ?# c1 ]Key words:
- Marking
- Instructions
+ Q  @3 t5 P  X' {- p: m3 D5 kDecision confirmed
" u$ F+ B1 \! ~' U% o( ^8 N! w/ hat CTL 38th meeting.
4 S" A& |. K" n; j" hQuestion:
A piece of ITE (e.g. telecommunications rack) has multiple modular power supplies that are
removable. The supply connection (e.g. power supply cord) to the equipment terminates directly
; F: m. L8 K- L; x' |* x2 ?! w9 Gto the power supplies. Is it permissible for the marked electrical ratings in the individual power
$ S( }3 J4 T9 U: b! xsupplies to be used to comply with the electrical portion of the equipment’s power rating marking
& f2 @+ y- Q3 C(clause 1.7.1), or must the equipment be provided with a separate electrical rating marking?
Decision:
- P; Q7 G3 v, Q! `" eThe electrical rating markings on the power supplies may be relied upon to meet the electrical
portion of the equipment’s power rating markings if (a) the mains supply connection terminates
; @1 }- \) o/ W' H# Tdirectly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the
3 U: p- |9 H! Q+ a0 u* U# C' Nequipment has a separate single marking that covers the other aspects of the power rating
marking required by 1.7.1 e.g., manufacturer, model.
$ x6 r4 r5 ~/ R) \" Q

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