DSH 389 Marking and instructions

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DSH 389   z1 K. N5 H8 c" `3 F

Marking and instructions ; I5 o8 F4 v# T3 s8 k- Z2 H

1.7.1

60950(ed.2);am1-am4

+ v% Y+ C) r8 r4 X' h" f8 x4 eStandard:
IEC 60950 (1991) 2nd ed., Amdts.1
: c/ ?: D, f: E(1992), 2 (1993), 3 (1995), 4 (1996)
! a5 ]) Q1 H  e& t2 cSub clause:
1.7.1
: E0 G) O. y& i2 U* o( sSheet n. 389
Page 1(1)
Subject:
Marking and instructions
7 X# Y; J% d7 ?% n/ DKey words:
- Marking
) a, L! Q3 _* l$ m( v- `- Instructions
Decision confirmed
at CTL 38th meeting.
. d3 q) V* B! m1 J0 [) x/ ~Question:
9 P) I  _( L7 T- {2 N# OA piece of ITE (e.g. telecommunications rack) has multiple modular power supplies that are
& s0 e8 D% ?( u) Q% {' }removable. 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
(clause 1.7.1), or must the equipment be provided with a separate electrical rating marking?
Decision:
- k; ]' ~+ R- }4 W9 z/ q  BThe electrical rating markings on the power supplies may be relied upon to meet the electrical
0 ~; J$ I" O6 [( a, Aportion of the equipment’s power rating markings if (a) the mains supply connection terminates
3 `5 C) w% Z( }! A$ {) C2 pdirectly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the
/ N' C; c( I) wequipment has a separate single marking that covers the other aspects of the power rating
marking required by 1.7.1 e.g., manufacturer, model.

$ U& r9 h9 [, L: l4 ]. p+ t