IEC TS 63236-2:2021

Direct current (DC) appliance couplers for information and communication technology (ICT) equipment installed in data centres and telecom central offices - Part 2: 5,2 kW system

IEC TS 63236-2:2021(E) applies to DC appliance couplers for class I equipment with two active contacts plus an earthing contact, a rated power of 5,2 kW and a rated voltage range from 294 V to 400 V DC. They are intended to power DC information and communication technology equipment only, as specified in IEC 62368-1.
This Part 2 is to be used in conjunction with IEC TS 63236-1:2021.

General Information

• Status: Published
• Publication Date: 24-Jun-2021
• ICS: 29.120.01 - Electrical accessories in general
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• Technical Committee: TC 23 - Electrical accessories
• Current Stage: PPUB - Publication issued
• Start Date: 27-Jul-2021
• Completion Date: 25-Jun-2021

Standards Content (Sample)

IEC TS 63236-2 ®
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 2: 5,2 kW system
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IEC TS 63236-2 ®
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 2: 5,2 kW system
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.01, 29.120.30 ISBN 978-2-8322-9928-9

– 2 – IEC TS 63236-2:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 General requirements . 7
5 General notes on tests . 7
6 Standard ratings . 7
7 Classification of appliance coupler . 7
8 Marking . 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 . 9
15 Forces necessary to insert and to withdraw the connector . 9
15.1 General . 9
16 Operation of contact . 9
17 Resistance to heating of appliance coupler . 9
18 Breaking capacity . 10
19 Normal operation . 10
20 Temperature rise . 10
21 Cords and their connection . 11
21.1 Cords for non-rewirable connectors . 11
21.2 Cable anchorage . 11
22 Mechanical strength . 12
23 Resistance to heat and ageing. 12
24 Screws, current-carrying parts and connections . 12
24.1 General . 12
25 Creepage distances, clearances and distances through sealing compound . 12
26 Resistance of insulating material to heat, fire and tracking . 12
27 Resistance to rusting . 13
28 Electromagnetic compatibility (EMC) requirements . 13
101 0 (zero) current operated appliance inlet systems . 13
Annex A (xxx) Safety-related routine tests for factory-wired accessories (protection
against electric shock and correct polarity) . 14
Annex B (xxx) Test schedule . 15
Annex C (xxx) Alternative gripping tests . 16
Annex D (xxx) Standard sheets and gauges . 17
D.1 Standard sheets . 17
D.2 Gauges . 22
D.2.1 Distance to the point of first contact . 22

D.2.2 "GO" gauges for appliance inlets according to standard sheet 1
(Figure D.1) . 23
D.2.3 "GO" gauge for connectors according to standard sheet 2 (Figure D.2). 25
D.2.4 Gauge for checking the maximum withdrawal force (see 15.2) . 26
D.2.5 Gauges for checking the minimum withdrawal force (see 15.3) . 26
D.2.6 Position of switch cam of optional micro switches . 27
Bibliography . 28

Figure D.1 – Appliance inlet . 19
Figure D.2 – Connector . 21
Figure D.3 – Positioning of the “+” and “−” pins/connector-contacts . 22
Figure D.4 – Gauges for checking point of first contact . 23
Figure D.5 – "GO" gauges for appliance inlets according to standard sheet 1
(Figure D.1) . 24
Figure D.6 – "GO" gauges for connector according to standard sheet 2 (Figure D.2). 25
Figure D.7 – Gauge representing the counterpart inlet designed to accept DC only for
checking the maximum withdrawal force, for breaking capacity test and for normal
operation test . 26
Figure D.8 – Gauge for checking the minimum withdrawal force for “+” and “–”
connector-contact . 26
Figure D.9 – Gauge for checking the minimum withdrawal force for “+”, “–” and “PE”
socket-contact . 27

Table 1 – Relationship between rated power and connectable nominal cross-sectional
areas or American Wire Gauges (AWG) size of copper conductors . 8
Table 2 – Maximum diameters of the cords . 9
Table 3 – Maximum and minimum withdrawal forces . 9
Table 4 – Cords and conductors for the tests of Clause 21 . 11
Table 5 – Type and nominal cross-sectional area of cords . 11
Table 6 – Types of cable for the rewirable connector test. 11
Table 7 – Value for the lateral pulls applied . 12
Table 8 – Values for straight and lateral pull forces . 12
Table D.1 – Dimension of contact gauge . 23

– 4 – IEC TS 63236-2:2021 © 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 2: 5,2 kW system
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