(this is obsolete)

EN 60950/A2

October 1991

Descriptors: Information technology equipment, business equipment, personal computer, safety

Amendment A2 to the English version of IN 60950

Safety of information technology equipment
(including electrical business equipment)

(IEC 950: 1986/A2:1990 + corrigendum September 1990)

This amendment modifies the European Standard EN 60950: 1988. It was approved by CENELEC on 1991-06-25. CENELEC members are bound to comply with the CEN/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 Central Secretariat or to any CENELEC member.

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

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

European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels


EN 60950/A2:1991 Page 2


Foreword

The proposal to endorse Amendment 2: 1990 to the International Standard IEC 950:1986 including the corrigendum of September 1990 was submitted to the CENELEC members for unique acceptance in September 1990.

The reference document was approved by CENELEC as Amendment A2 to EN 60950:1988 on 25 June 1991.

The following dates were fixed:

· latest date of publication of an identical national standard (dop) 1993-06-01

· latest date of withdrawal of conflicting national standards (dow) 1992-06-01

For products which have complied with EN 60960: 1988 before 1992-06-01 as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1997-06-01.

Endorsement notice

The text of Amendment 2:1990 to the International Standard IEC 950:1988, including the corrigendum of September 1990, was approved by CENELEC as an amendment to the European Standard without any modification.


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This amendment has been prepared by Technical Committee No 74: Safety of information technology equipment including electrical business equipment and telecommmunication equipment.

The text of this amendment is based on the following documents:

Six Month's rule  Reports on voting
74(CO)85+A74(CO)100
74(CO)10174(CO)126
74(CO)10274(CO)127
74(CO)10374(CO)128
74(CO)10474(CO)129
74(CO)10574(CO)130
74(CO)10674(CO)131
74(CO)10774(CO)132
74(CO)10874(CO)133
74(CO)10974(CO)134
74(CO)11074(CO)135
74(CO)11174(CO)136
74(CO)11274(CO)137
74(CO)12574(CO)157

Rull information on the voting for the approval of this amendment can be found in the Voting Reports indicated in the above table.

The changes introduced by Amendment No. 2 are indicated by either a vertical line in the margin or by underlining.

The corrections indicated hereinafter are to be inserted by the user in IEC Publication 950 amended by Amendment No. 1.


Page 5

PREFACE

Add the following to the list of IEC publications quoted:

Publication No. 825(1984): Radiation sfety of laser products, equipment classification, requirements and user's guide

Add the following to the list of other publications quoted:

ICRP 26(1977): Protection against ionizing radiation from external sources.


Page 13

1.2.7.2 Servic access area

In the second line, delete the words:

"...for maintenance purposes..."



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Page 24

1.7.2 Add the following note after the three notes at the top of the page:

In Norway and Sweden, pluggable Class 1 equipment intended for connection to a telephone network or a similar communications system may require a marking stating that the equipoment must be connected to an earthed mains socket-outlet.


Page 28

2.1.3 Replace the second and third lines of this sub-clause by:

- not be subject to damabe nor to stress and shall not need to be handled by the operator.


Page 29

2.2.2 Add the following after the words "Mechanical Strength":

'frequency of the working voltage'


Page 43 and 44

Add the following to Condition 5 of Table III and Condition 3 of Table IV:

' the calculated spacing being rounded up to the next higher 0.1 mm increment.'


Page 62

4.2.7 In the second paragraph:
- after the wording 'Damage to finish" add 'cracks,'
- and delete 'cracks not visible to the naked eye.'


Page 67

Renumber sub-clauses 4.3.21, 4.3.22, 4.3.23 and 4.3.24 as 4.3.22, 4.3.23, 4.3.24 and 4.3.25.

The following new pages are to be inserted, where appropriate.

[Images of these replacement pages have not been included due to space considerations. They are available. Please contact Bob Johnson]

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