DSH 389 Marking and instructions

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DSH 389 $ {1 T* T1 E! |; e1 l6 V

Marking and instructions 4 L, Q6 t9 n, `- k. k" L8 w

1.7.1

60950(ed.2);am1-am4 $ E# m3 V& m% j( y; L* _( f0 p" t& L

Standard:
* @0 Q% C4 m$ w( }! `IEC 60950 (1991) 2nd ed., Amdts.1
; C0 H8 T: x% M. Z. {$ N(1992), 2 (1993), 3 (1995), 4 (1996)
Sub clause:
/ i9 q- n- H$ Y1.7.1
Sheet n. 389
Page 1(1)
1 D9 P. l$ P/ y. j: cSubject:
9 ]& q3 V2 y" N+ W( bMarking and instructions
Key words:
- Marking
4 p' f! ~: k5 U. y, H- Instructions
: f6 r& x  a6 P0 P# _: rDecision confirmed
9 @3 _+ c, p7 j0 G! R) Aat CTL 38th meeting.
Question:
/ L% q, ^0 g$ `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
& Q8 \6 @  m3 X) M+ S4 U7 y$ eto the power supplies. Is it permissible for the marked electrical ratings in the individual power
& u5 J# Q5 q" F! _8 a) |1 D: Osupplies to be used to comply with the electrical portion of the equipment’s power rating marking
# l( i3 p3 k) i; M(clause 1.7.1), or must the equipment be provided with a separate electrical rating marking?
. G3 n4 b- l. D: e. HDecision:
: \1 x$ o0 f3 z# u  |  K! fThe electrical rating markings on the power supplies may be relied upon to meet the electrical
- \3 A, d) `' v7 C; c2 d4 S- J& vportion of the equipment’s power rating markings if (a) the mains supply connection terminates
. M" @: C7 R9 R$ tdirectly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the
equipment has a separate single marking that covers the other aspects of the power rating
( i; a3 x8 C+ [/ Hmarking required by 1.7.1 e.g., manufacturer, model.
- L( P- X, s0 `% {7 H

5 z3 L$ ?6 L# E- F) C, n