(this is obsolete)

KEY WORDS:

• Information technology equipment
• business equipment
• personal computer
• safety

English Version

SAFETY OF INFORMATION TECHNOLOGY EQUIPMENT INCLUDING ELECTRICAL BUSINESS EQUIPMENT

(IEC 950 (1986 - 1st edition, modified))

This European Standard was ratified by Cenelec on 1987-09-22. CENELEC members are bound to comply with the requirements of the CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CENELEC Central Secretariat or to any CENELEC member

This European Standard exists in three official versions (English, French, and German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to CENELEC Central Secretariat has the same status as the official version.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

©CENELEC 1988 Copyright reserved to all CENELEC members

Ref. No. EN 60 950;1988 E

Brief History:

The CENELEC Questionnaire Procedure performed for finding out whether or not IEC 950 (first edition, 1986) could be accepted without textual changes, has shown that some modifications were necessary for the acceptance as European Standard (EN). The Reference Document modified by the common modifications prepared by the CENELEC Reporting secretariat SR 74 was submitted to the CENELEC members for formal vote and acceptance by CENELEC.

Technical Text:

The text of the International Standard IEC 950 (first edition, 1986) was approved by CENELEC on 22 September 1987 as a European Standard.

Annexes designated "normative" are part of the body of the standard. Annexes designated "informative" are given only for information.

In this EN Appendix ZA is normative. Appendices ZB and ZC are informative.

The following dates were fixed at the 53th BT on 22 September 1987:

• doa: 1988-01-01
• dop: 1988-09-01
• dow: 1990-09-01

ENDORSEMENT NOTICE EN 60 950

IEC 950 (first edition, 1986), applies taking into account the following common modifications:

           up to and including  6 0.75 1) 
   Over  6 up to and including 10 1.0 
   Over 10 up to and including 16 1.5 

   Over 10 up to and    1.5 to 2.5   1.5 to 4 
        including 16

Appendix ZA to EN 60 950

Appendix ZA (normative)

Other publications quoted in this standard

* This publication is under revision or a revised version has been issued.

When the international publication has been modified by CENELEC common modifications (mod = modification by CENELEC common modifications) the relevant EN/HD applies.

ISO Publications

Other publications quoted

APPENDIX ZB (Informative)

SPECIAL NATIONAL CONDITIONS

IMPORTANT! 
The cores in this mains lead are coloured 
in accordance with the following code:
  - green and yellow  : earth 
  - blue	             : neutral 
  - brown	             : live 

As the colours of the cores in the mains 
lead of this equipment may not correspond 
with the coloured markings identifying the 
terminals in your plug, proceed as follows: 
- the core which is coloured green and 
  yellow must be connected to the terminal 
  in the plug which is marked with the letter 
  E or by the earth symbol , or coloured green 
  and yellow 
- the core which is coloured blue must be 
  connected to the terminal which is marked 
  with the letter N or coloured black 
- the core which is coloured brown must be 
  connected to the terminal which is marked 
  with the letter L or coloured red 

WARNING - THIS EQUIPMENT MUST BE EARTHED 

         Vigtigt! 
Ledern med grøn/gul isolation må kun 
tilsluttes en klemme market eller 

For tilsluting as de øvrige ledere, se 
medfølgende installationsvejledning. 

APPENDIX ZC

(Informative)

National Deviations

The following national deviations are designed A-deviations which means:

A-Deviations: A national deviation due to regulations, the alteration of which is - at least for the time being - outside the competence of the CEN/CENELEC member.

COMPLIMENTARY INFORMATION TO ENGLISH VERSION OF EN 60 950(*)

A) CORRIGENDUM (corrected by Amendment 1 to IEC 950, November 1988)

IEC Publication 950 : 1986 Safety information technology including electrical business equipment.

Page 47
Sub-clause 1.7.5
Replace the second paragraph with the following note:
Examples of standard supply outlets are given in IEC Publication #83: Plugs and socket outlets for domestic and similar general use. Standards.

Page 65
Sub-clause 2.4.4.
Replace "15 000 kv" with "15 000 V".

Page 89
Table V
In the last line, replace "0.0" with "10.0".

Page 113
Table XI
In the last line, replace "over 16....." with "Over 10...".

Page 131
Sub-clause 4.3.24.
In the paragraph starting with a dash, replace the dash with "c)".

Page 153
Table VX
In the fifth column, replace 1kv < U < 7kv r.m.s." with "1kv < U <= 7kv r.m.s.".

Page 179
Sub-clause A 6.10
In the text after the third dash replace the "turn" with "burn".

Page 185
Sub-clause A.8.7.
In line 2, replace "A 7.6" with "A 8.6"

Page 197
Clause B5
In line 1 of the note, insert "reset" after the word "automatic".

Page 207
Table CII
In the second item, in the second column, insert "winding" after the text "Earthed or unearthed hazardous voltage".

Page 211
Figure C1
Replace the existing figure and caption with the new Figure C1 as shown below.

(*) Information given by SR 74 in document CLC/BT (SR 74)9

B) MINOR EDITORIAL ITEMS (corrected by amendment 1 to IEC 950, November 1988)

Page 125
Sub-clause 4.3.9 In the second dashed item of the note, in line 3, replace "supply flexible cable or cord" with "power supply cord".

Page 135
Sub-clause 4.4.3
In line 3, delete "at least", (repetition).

Page 155
Table XV, Part 2.
In note 1, replace "UŒ04638‹" with "UŒ0.4638‹"

Page 169,
171, and 177 Sub-clause 1.4, 2.4 and 6.4 respectively.
Replace "primary air inlets" with "primary air inlet or inlets".

Page 201
Clause C1
In the fourth dashed item, insert "for" before "current-limiting..." . Appendix ZC to EN 60 950

Page 207
Table CII
In the fifth item, in the third column, replace "Tableau XV" with Table XV".

Page 239
Appendix K
In the third item in the table, replace "Zn on iron on steel" with Zn on iron or steel".

Page 227
Table G1
In the third column, align the third entry of "3.5" with the text "- note complying with Clause G5".

Page 229 and 231
Figures G1 and G2 respectively
Transpose the two figures (The captions should not be transposed).