IEC 60512-99-002:2022

IEC 60512-99-002 ®
Edition 2.0 2022-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Connectors for electrical and electronic equipment – Tests and measurements –
Part 99-002: Endurance test schedules – Test 99b: Test schedule for unmating
under electrical load
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IEC 60512-99-002 ®
Edition 2.0 2022-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Connectors for electrical and electronic equipment – Tests and measurements –
Part 99-002: Endurance test schedules – Test 99b: Test schedule for unmating
under electrical load
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.10 ISBN 978-2-8322-4195-0

– 2 – IEC 60512-99-002:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General . 6
5 Preparation of specimens . 6
6 Test circuit requirements . 7
6.1 General . 7
6.2 Voltage and current . 9
6.3 Auxiliary equipment . 9
7 Test methods . 10
7.1 Initial cycles Mechanical operations with electrical load . 10
7.2 Flowing mixed gas corrosion . 10
7.3 Final cycles .
8 Tests and test schedule – Test group UEL 1 . 10
Annex A (informative) Test voltage and current setting instructions. 14
A.1 General . 14
A.2 Rationale . 14
A.3 Suggested setting instructions . 14
Bibliography . 15

Figure 1 – Test circuit details . 8

Table 1 – Maximum electrical circuit current .
Table 1 – Test group UEL 1 . 11
Table A.1 – Maximum electrical circuit current per IEEE 802.3. 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 99-002: Endurance test schedules –
Test 99b: Test schedule for unmating under electrical load

FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes made to
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– 4 – IEC 60512-99-002:2022 RLV © IEC 2022
IEC 60512-99-002 has been prepared by subcommittee 48B: Electrical connectors, of IEC
technical committee 48: Electrical connectors and mechanical structures for electrical and
electronic equipment. It is an International Standard.
This second edition cancels and replaces the first edition published in 2019. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Test group UEL has been revised with respect to the order of the test phases, the test
severities and the requirements.
The text of this International Standard is based on the following documents:
Draft Report on voting
48B/2922/FDIS 48B/2938/RVD
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 International Standard 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 www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60512 series, published under the general title Connectors for
electrical and electronic equipment – Tests and measurements, can be found on the IEC
website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 99-002: Endurance test schedules –
Test 99b: Test schedule for unmating under electrical load

1 Scope
This part of IEC 60512 is used for testing the assessment of connectors within the scope of
SC 48B that are used in twisted pair communication cabling with remote power, such as
ISO/IEC 11801-1 Class D, or better, balanced cabling in support of IEEE Std 802.3bt™, (PoE
TM
Plus – Power over Ethernet Plus) IEEE 802.3bt (Power over Ethernet, supporting up to 90 W
from the power sourcing equipment).
The object of this document is to detail a test schedule to determine the ability of pairs sets of
connectors to withstand a sequence of tests with a total of 100 engagements and separations.
The electrical current is passed through the connectors during the separation (unmating) step
only, in accordance with IEC 60512-9-3 minimum of 100 mechanical operations with electrical
load, where an electrical current is being passed through the connectors in accordance with
IEC 60512-9-3 during the separation (unmating) step.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination
IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
method
IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
Voltage stress tests – Test 4a: Voltage proof
IEC 60512-9-3:2011, Connectors for electronic equipment – Tests and measurements –
Part 9‑3: Endurance tests – Test 9c: Mechanical operation (engaging and
...