DSH 389 Marking and instructions

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广东安规检测
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小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 389 - C8 _* n9 F5 W9 t1 N1 B 6 ]5 L( w; a; I5 Q5 e. d2 w 6 C9 s. v+ V; N1 m+ M

Marking and instructions

1.7.1 0 ], W/ S$ z1 {; ~+ L/ m

60950(ed.2);am1-am4 ; X4 ?9 c1 t$ I. O& E6 V. s5 x5 B

Standard:
% |) T/ x% o1 j& J( LIEC 60950 (1991) 2nd ed., Amdts.1
(1992), 2 (1993), 3 (1995), 4 (1996)
Sub clause:
1.7.1
2 ~2 u; U. @2 q9 v- f; ZSheet n. 389
Page 1(1)
Subject:
Marking and instructions
! R8 d, o/ I/ L6 yKey words:
  l. i' Z! ^4 c/ ~! o" y1 x- Marking
- Instructions
- `4 \! ^4 l' d' WDecision confirmed
3 x2 x7 I3 c/ y* u/ |at CTL 38th meeting.
Question:
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
to the power supplies. Is it permissible for the marked electrical ratings in the individual power
& G# \. p4 N% t9 I# `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?
, Q( `1 A7 G" Y! T/ Q+ i/ \& [Decision:
The 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
directly to the power supply, (b) the power supply electrical rating(s) is readily visible, and (c) the
* c" ~5 w9 }. Tequipment has a separate single marking that covers the other aspects of the power rating
0 k  I. A' T( m" p, k2 o# _& ~marking required by 1.7.1 e.g., manufacturer, model.


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