IEC TS 62735-1:2015
(Main)Direct current (DC) plugs and socket-outlets for information and communication technology (ICT) equipment installed in data centres and telecom central offices - Part 1: Plug and socket-outlet system for 2,6 kW
Direct current (DC) plugs and socket-outlets for information and communication technology (ICT) equipment installed in data centres and telecom central offices - Part 1: Plug and socket-outlet system for 2,6 kW
IEC TS 62735-1:2015(E) applies to plugs and fixed socket-outlets for class I equipment with two active contacts plus an earthing contact, a rated power of 2,6 kW and a rated voltage range from 294 V to 400 V d.c. They are intended to power d.c. information and communication technology equipment only, products according to IEC 60950.
General Information
Buy Standard
Standards Content (Sample)
IEC TS 62735-1 ®
Edition 1.0 2015-08
TECHNICAL
SPECIFICATION
colour
inside
Direct current (DC) plugs and socket-outlets for information and communication
technology (ICT) equipment installed in data centres and telecom central offices
Part 1: Plug and socket-outlet system for 2,6 kW
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,
77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC TS 62735-1 ®
Edition 1.0 2015-08
TECHNICAL
SPECIFICATION
colour
inside
Direct current (DC) plugs and socket-outlets for information and communication
technology (ICT) equipment installed in data centres and telecom central offices
Part 1: Plug and socket-outlet system for 2,6 kW
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120; 29.120.30 ISBN 978-2-8322-2869-2
– 2 – IEC TS 62735-1:2015 © IEC 2015
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 General requirements . 14
5 General notes on tests . 14
6 Ratings . 16
7 Classification . 16
7.1 Accessory classifications . 16
7.1.1 Classification according to the method of connecting the cable . 16
7.1.2 Classification according to the type of terminals . 16
7.2 Socket-outlet classifications . 16
7.2.1 Classification according to the degree of protection against electric
shock . 16
7.2.2 Classification according to the existence of shutters . 16
7.2.3 Classification according to the method of application/mounting of the
socket-outlet . 16
7.2.4 Classification according to the method of installation . 17
8 Marking . 17
8.1 General . 17
8.2 Symbols . 17
8.3 Visibility of markings . 18
8.4 Marking for plugs . 18
8.5 Marking of terminals . 18
8.6 Durability of marking . 19
9 Checking of dimensions . 19
10 Protection against electric shock . 19
11 Provision for earthing . 22
12 Terminals and terminations . 23
12.1 General . 23
12.2 Terminals with screw clamping for external copper conductors . 24
12.3 Screwless terminals for external copper conductors . 29
12.4 Flat quick-connect terminations . 35
12.4.1 General . 35
12.4.2 Constructional requirements . 35
12.4.3 Electrical requirements . 36
12.5 Permanent connections. 36
13 Construction of socket-outlets . 36
14 Construction of plugs . 43
15 Interlocked socket-outlets . 48
16 Resistance to ageing, protection provided by enclosures, and resistance to
humidity . 48
16.1 Resistance to ageing . 48
16.2 Protection provided by enclosures . 49
16.2.1 General . 49
16.2.2 Protection against access to hazardous parts and against harmful
effects due to ingress of solid foreign objects . 49
16.3 Resistance to humidity . 50
17 Insulation resistance and electric strength . 51
18 Operation of earthing contacts . 52
19 Temperature rise . 53
20 Breaking capacity . 56
21 Normal operation . 57
22 Force necessary to withdraw the plug . 58
22.1 General . 58
22.2 Verification of the maximum withdrawal force for socket-outlets . 59
22.3 Verification of the minimum withdrawal force . 59
23 Flexible cables and their connection . 60
24 Mechanical strength . 63
25 Resistance to heat . 72
26 Screws, current-carrying parts and connections . 73
27 Creepage distances, clearances and distances through sealing compound . 75
28 Resistance of insulating material to abnormal heat and to fire . 77
29 Resistance to rusting . 78
Annex A (normative) Safety-related routine tests for factory-wired accessories
(protection against electric shock and correct polarity) . 107
A.1 General remarks . 107
A.2 Polarized systems, “+” and “−” – correct connection . 107
A.3 Earth continuity . 108
A.4 Short-circuit/wrong connection and reduction of creepage distance and
clearances between “+” and “−” to earth ( ) . 108
Annex B (normative) Survey of specimens needed for tests . 109
Annex C (informative) Alternative gripping tests . 110
C.1 Gripping test C1 . 110
C.2 Gripping test C2 . 112
Annex D (normative) Standard sheets and gauges . 114
D.1 Standard sheets . 114
D.2 Gauges for checking the dimensions of the entry holes . 118
Bibliography . 121
Figure 1 – Examples of accessories . 80
Figure 2 – Pillar terminals . 81
Figure 3 – Screw terminals and stud terminals . 82
Figure 4 – Saddle terminals . 83
Figure 5 – Mantle terminals. 84
Figure 6 – Example of thread-forming screw . 84
Figure 7 – Example of thread-cutting screw . 84
Figure 8 – Arrangement for compression test of 10.2 and 24.6 . 85
Figure 9 – Gauge for checking non-accessibility of live parts, through shutters . 86
Figure 10 – Gauge for checking non-accessibility of live parts, through shutters, and of
live parts of socket-outlets with increased protection. 87
– 4 – IEC TS 62735-1:2015 © IEC 2015
Figure 11 – Arrangement for checking damage to conductors . 88
Figure 12 – Information for deflection test .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.