, a) M- a. J8 _' H, g9 OStandard:4 ^8 G9 s; L2 g- O, r
IEC 60950 (1991) 2nd ed., Amdts.1 " h1 Q% o ^% @: l `(1992), 2 (1993), 3 (1995), 4 (1996)) a! D9 _5 S# J4 B
Sub clause:1 ?5 Y* l- \% [- }, _
1.7.1 0 u- M- \. f% c* J3 XSheet n. 389 $ M% i4 H$ Z/ I8 W. T% f. {Page 1(1): N3 }4 Q& M! v/ M& [, |- L
Subject: ' r: n6 r& Y7 O9 TMarking and instructions* o1 B0 o/ h9 [* X. m& {
Key words:0 l n1 f* v% {! c( t) F* I4 A9 b/ @7 @
- Marking ( @! v0 s4 U5 q. J6 H8 a1 S6 W- Instructions& x, P2 K7 |. V
Decision confirmed r+ M. S$ V6 K3 p3 }& E! Tat CTL 38th meeting.( K8 ]0 D* I" h* K2 [1 j) h
Question:3 m4 L$ N' ^5 N S" g9 O
A piece of ITE (e.g. telecommunications rack) has multiple modular power supplies that are $ O$ Y1 N/ \) H# aremovable. The supply connection (e.g. power supply cord) to the equipment terminates directly3 [6 Y, E2 U! U. @" p, p, d$ N
to the power supplies. Is it permissible for the marked electrical ratings in the individual power + z& {9 V- c& T3 h! fsupplies to be used to comply with the electrical portion of the equipment’s power rating marking9 x& V; K+ ~# h: }' y8 e
(clause 1.7.1), or must the equipment be provided with a separate electrical rating marking?* K8 h$ x- Q& B/ q+ A$ N% h
Decision:4 f) ?9 J/ U2 e
The electrical rating markings on the power supplies may be relied upon to meet the electrical 9 [, b/ l" S) y' ^5 E" e0 rportion of the equipment’s power rating markings if (a) the mains supply connection terminates0 P1 x* y* j/ q1 C# M8 l
directly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the ; W% j$ |) t* D* I4 tequipment has a separate single marking that covers the other aspects of the power rating 5 b! v4 T, q: G0 o( |marking required by 1.7.1 e.g., manufacturer, model. 4 s) N3 s' z8 p5 U2 N- { & K( u9 G1 U9 [3 k5 w7 e- e! |' W8 I[attach]77170[/attach]0 }0 y) ^2 a% z3 h' e9 a
DSH 3897 h Z7 H$ A, J9 D. @