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IEC TS 63236-3
Edition 1.0 2021-06
TECHNICAL
SPECIFICATION
Direct current (DC) appliance couplers for information and communication
technology (ICT) equipment installed in data centres and telecom central
offices –
Part 3: AC/DC appliance inlet
your local IEC member National Committee for further information.
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IEC TS 63236-3
Edition 1.0 2021-06
TECHNICAL
SPECIFICATION
Direct current (DC) appliance couplers for information and communication
technology (ICT) equipment installed in data centres and telecom central
offices –
Part 3: AC/DC appliance inlet
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.01, 29.120.30 ISBN 978-2-8322-9929-6
– 2 – IEC TS 63236-3:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General notes on tests . 7
6 Standard ratings . 7
7 Classification of appliance couplers . 7
8 Marking . 7
8.1 General . 7
8.2 Additional markings . 7
8.3 Symbols or alphanumeric notations . 8
8.4 Legibility of markings . 8
8.5 Terminal markings and wiring instructions . 8
9 Dimensions and compatibility . 8
10 Protection against electric shock . 8
11 Provision for earthing . 8
12 Terminals and terminations . 8
13 Construction . 8
14 Insulation resistance and electric strength . 8
15 Forces necessary to insert and to withdraw the connector . 9
16 Operation of contacts . 9
17 Resistance to heating of appliance couplers . 9
18 Breaking capacity . 9
19 Normal operation . 9
20 Temperature rise . 9
21 Cables and their connection . 9
22 Mechanical strength . 9
23 Resistance to heat and ageing. 9
24 Screws, current-carrying parts and connections . 9
25 Creepage distances, clearances and distances through sealing compound . 9
26 Resistance of insulating material to heat, fire and tracking . 9
27 Resistance to rusting . 10
28 Electromagnetic compatibility (EMC) requirements . 10
Annex A (normative) Safety-related routine tests for factory-wired accessories
(protection against electric shock and correct polarity). 11
Annex B (normative) Test schedule. 12
Annex C (informative) Alternative gripping tests . 14
Annex D (normative) Standard sheets and gauges . 15
D.1 Standard sheets . 15
D.2 Gauges . 18
D.2.1 Distance to the point of first contact . 18
D.2.2 "GO" gauges for appliance inlets according to standard sheet 1
(Figure D.1) . 18
Bibliography . 21
Figure D.1 – Hybrid appliance inlet . 17
Figure D.2 – Positioning of the “+” and “−” pins . 18
Figure D.3 – "GO" gauges for appliance inlets according to standard sheet 1
(Figure D.1) . 19
Figure D.4 – "GO" gauge for appliance inlets according to standard sheets 1
(Figure D.1) . 20
– 4 – IEC TS 63236-3:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIRECT CURRENT (DC) APPLIANCE COUPLERS FOR INFORMATION
AND COMMUNICATION TECHNOLOGY (ICT) EQUIPMENT INSTALLED
IN DATA CENTRES AND TELECOM CENTRAL OFFICES –
Part 3: AC/DC appliance inlet
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TS 63236-3 has been prepared by IEC technical committee 23: Electrical accessories. It is
a Technical Specification.
The text of this Technical Specification is based on the following documents:
DTS Report on voting
23/917/DTS 23/959A/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at /members_experts/refdocs. The main document types developed by IEC are
described in greater detail at /standardsdev/publications.
This Part 3 is to be used in conjunction with IEC TS 63236-1:2021.
The clauses of this document supplement or modify the corresponding clauses in IEC 63236-1.
When a particular subclause or annex of Part 1 is not mentioned in this Part 3, the subclause
or annex of IEC 63236-1 applies as far as is reasonable. Where this document states “addition”,
“amendment” or “replacement”, the relevant requirement, test specification or explanatory
matter in IEC 63236-1 is to be adapted accordingly.
Clauses or subclauses which are additional to those in Part 1 are numbered starting from 101.
A list of all the parts in the IEC 63236 series, published under the general title Direct current
(DC) appl
...