EN IEC 60512-23-3:2019

• Abstract:

  This part of IEC 60512 defines a standard test method for measuring the shielding effectiveness SE of a shielded connector, or of a connector not provided with integral shield once fitted with a shielding accessory and terminated with a screened cable. The complete assembly has a continuous 360° shielding capability throughout its length. NOTE 1 Practically, continuous 360° shielding is not always achievable based on the geometry of the connector. NOTE 2 Shielding" is used in this document with the same meaning as "screening". This test method can be applied to shielded connectors and to connector accessories with shielding capability. The following different connector designs can be tested: - circular connectors; - rectangular connectors; - connectors for printed boards; - connector shielding accessories. NOTE 3 For the definition of "accessory" see IEV 581-24-10. A shielding accessory i.e. an accessory that confers shielding to a non-inherently shielded connector, may be a suitable set of shielded housings providing electrical continuity, along the mated connector set, between the screen of the (screened) cable at the cable outlet of the free cable connector housing and the metallic mounting surface for the fixed connector housing. The free connector housing is provided with a cable screen clamp. This test method utilizes the principle that the intrinsic shielding property of the connector/accessory/cable assembly is its surface transfer impedance ZT which can be expressed as the longitudinal voltage inside the shield, relative to the current flow on the outside shell. This test method is based on two impedance-matched circuits. See Figure 1 for the measurement principle. The connector specimen under test is integrated into the secondary circuit 02. The impedance-matched injection line of the primary circuit 01, which activates the electromagnetic field, runs parallel to the surface of the specimen under test. This test is also suitable for measuring the shielding effectiveness of a connector fitted with triaxial contacts terminated with shielded, twisted pair cables, as used in data bus systems. NOTE 4 This standard has been adopted by ASD-STAN (formerly known as AECMA) as EN 2591-212.

• Status: Published
• Publication Date: 28-Feb-2019
• Withdrawal Date: 17-Jan-2022
• ICS: 31.220.01 - Electromechanical components in general
• Technical Committee: CLC/SR 48B - Connectors
• Drafting Committee: IEC/SC 48B - IEC_SC_48B
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Mar-2019
• Completion Date: 01-Mar-2019
• Ref Project: SIST EN IEC 60512-23-3:2019 - Connectors for electrical and electronic equipment - Tests and measurements - Part 23-3: Screening and filtering tests - Test 23c: Shielding effectiveness of connectors and accessories - Line injection method (IEC 60512-23-3:2018)

• Replaces: EN 60512-23-3:2001 - Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 23-3: Test 23c: Shielding effectiveness of connectors and accessories
• Effective Date: 05-Mar-2019
• Refers: IEC 60050-581:2008 - International Electrotechnical Vocabulary (IEV) - Part 581: Electromechanical components for electronic equipment
• Effective Date: 20-Feb-2026
• Refers: EN IEC 60512-1:2018 - Connectors for electrical and electronic equipment - Tests and measurements - Part 1: Generic specification
• Effective Date: 03-Feb-2026
• Referred By: EN 2591-212:2005 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 212: Surface transfer impedance
• Effective Date: 09-Feb-2026
• Referred By: EN IEC 61076-2-101:2025 - Connectors for electrical and electronic equipment - Product requirements - Part 2-101: Circular connectors - Detail specification for M12 connectors with screw-locking
• Effective Date: 03-Feb-2026
• Referred By: CLC/TS 50467:2008 - Railway applications - Rolling stock - Electrical connectors, requirements and test methods
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 61076-2-111:2026 - Connectors for electrical and electronic equipment - Product requirements - Part 2-111: Circular connectors - Detail specification for power connectors with M12 screw-locking
• Effective Date: 03-Feb-2026
• Referred By: EN 50173-10:2025 - Information technology - Generic cabling systems - Part 10: Single pair cabling
• Effective Date: 03-Feb-2026

Overview

EN IEC 60512-23-3:2019 (adopted by CLC) defines the line injection method for measuring the shielding effectiveness (SE) of connectors and shielding accessories fitted to screened cables. Part of the IEC 60512 series (Screening and filtering tests), this standard specifies a reproducible test procedure to determine the surface transfer impedance (ZT) of a connector assembly and to derive its shielding attenuation (SE). The method applies to circular, rectangular, printed‑board connectors and to connector shielding accessories, including assemblies using triaxial contacts and shielded twisted‑pair data cables.

Key topics and technical requirements

• Measurement principle: two impedance‑matched circuits - a primary injection line runs parallel to the specimen and excites the electromagnetic field while the connector assembly forms the secondary circuit. SE is derived from the measured surface transfer impedance (ZT).
• Applicable frequency range: the method is considered reliable up to about 3 GHz (updated from 1 GHz in earlier editions).
• Specimens covered: shielded connectors, non‑shielded connectors fitted with a shielding accessory, and connector accessories that provide electrical continuity along the mated set.
• Test setup elements:
  • impedance‑matched injection line and secondary circuit,
  • calibration procedure before measurement,
  • termination with screened cable and continuous 360° shielding where practicable (note: perfect 360° continuity may not always be achievable).
• Instrumentation note: calibration and TDR requirements are strict; the standard warns that Time Domain Reflectometry (TDR) devices with rise time < 100 ps are needed for certain calibrations (stricter than some related cable methods).
• Output: plot of transfer impedance versus frequency and conversion to shielding effectiveness (attenuation) SE.

Applications and who uses it

This test method is essential for:

• EMC engineers validating connector and accessory shielding performance
• Connector designers/manufacturers assessing design improvements and accessories
• Test laboratories performing compliance and characterization testing
• Quality and compliance teams in automotive, aerospace, telecommunications and industrial electronics where connector shielding impacts system immunity and emissions
• System integrators using shielded cable assemblies and data‑bus connectors (e.g., triaxial or shielded twisted pair systems)

Practical use cases include qualifying connector shields, comparing accessory designs, and verifying shielding integrity across mated interfaces under realistic cable terminations.

Related standards

• IEC 60512-1 - Generic test specifications for connectors
• IEC 62153-4-6 - Surface transfer impedance - line injection method (normative reference)
• EN IEC 60512-23-3:2019 is aligned with and adopted across European bodies (CENELEC/CLC); ASD‑STAN adoption noted as EN 2591-212.

Keywords: EN IEC 60512-23-3:2019, shielding effectiveness, line injection method, surface transfer impedance, connector shielding tests, screening and filtering tests, connector accessories, EMC testing.

SLOVENSKI STANDARD
01-maj-2019
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Connectors for electrical and electronic equipment - Tests and measurements - Part 23-
3: Screening and filtering tests - Test 23c: Shielding effectiveness of connectors and
accessories - Line injection method (IEC 60512-23-3:2018)
Elektrisch-mechanische Bauelemente für elektrische und elektronische Einrichtungen -
Meß- und Prüfverfahren - Teil 23-3: Prüfung 23c: Schirmwirkung von Steckverbindern
und Zubehör - Paralleldrahtverfahren (IEC 60512-23-3:2018)
Connecteurs pour équipements électriques et électroniques - Essais et mesures - Partie
23-3: Essais d'écrantage et de filtrage - Essai 23c: Efficacité de blindage des
connecteurs et des accessoires - Méthode de la ligne d'injection (IEC 60512-23-3:2018)
Ta slovenski standard je istoveten z: EN IEC 60512-23-3:2019
ICS:
31.220.10 9WLþLLQYWLþQLFHNRQHNWRUML Plug-and-socket devices.
Connectors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60512-23-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 31.220.01 Supersedes EN 60512-23-3:2001
English Version
Connectors for electrical and electronic equipment - Tests and
measurements - Part 23-3: Screening and filtering tests - Test
23c: Shielding effectiveness of connectors and accessories -
Line injection method
(IEC 60512-23-3:2018)
Composants électromécaniques pour équipements Elektrisch-mechanische Bauelemente für elektrische und
électroniques - Procédures d'essai de base et méthodes de elektronische Einrichtungen - Meß- und Prüfverfahren - Teil
mesure - Partie 23-3: Essai 23c: Efficacité de blindage des 23-3: Prüfung 23c: Schirmwirkung von Steckverbindern und
connecteurs et des accessoires Zubehör - Paralleldrahtverfahren
(IEC 60512-23-3:2018) (IEC 60512-23-3:2018)
This European Standard was approved by CENELEC on 2019-01-18. 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60512-23-3:2019 E

European foreword
The text of document 48B/2631/CDV, future edition 2 of IEC 60512-23-3, prepared by SC 48B
"Electrical connectors" of IEC/TC 48 "Electrical connectors and mechanical structures for electrical
and electronic equipment" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60512-23-3:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-10-18
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-01-18
document have to be withdrawn
This document supersedes EN 60512-23-3:2001.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60512-23-3:2018 was approved by CENELEC as a
European Standard without any modification.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-581 -  International Electrotechnical Vocabulary - Part - -
581: Electromechanical components for
electronic equipment
IEC 60512-1 -  Connectors for electrical and electronic EN IEC 60512-1 -
equipment - Tests and measurements - Part 1:
Generic specification
IEC 62153-4-6 2017 Metallic cables and other passive components - -
test methods - Part 4-6: Electromagnetic
compatibility (EMC) - Surface transfer
impedance - line injection method

IEC 60512-23-3 ®
Edition 2.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Tests and measurements –

Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of

connectors and accessories – Line injection method

Connecteurs pour équipements électriques et électroniques – Essais et

mesures –
Partie 23-3: Essais d’écrantage et de filtrage – Essai 23c: Efficacité de blindage

des connecteurs et des accessoires – Méthode de la ligne d’injection

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.01 ISBN 978-2-8322-6319-8

– 2 – IEC 60512-23-3:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Test method . 9
4.1 Test requirements . 9
4.2 Applicable frequency range . 9
5 Test equipment . 9
6 Preparation of the test specimen . 10
6.1 General . 10
6.2 Circular connectors . 10
6.3 Rectangular connectors . 11
6.4 Connectors for printed boards . 11
6.5 Impedance matching of primary and secondary circuits . 12
6.5.1 General. 12
6.5.2 Preparation of the secondary circuit . 12
6.5.3 Adaptation of the primary circuit . 12
6.6 Calibration of test set-up . 12
7 Measurement of shielding effectiveness . 13
7.1 Measurement . 13
7.2 Method of calculating shielding effectiveness SE (attenuation) from surface
transfer impedance Z . 13
T
8 Requirements . 14
9 Details to be specified . 14
Bibliography . 15

Figure 1 – Principle of line injection method . 8
Figure 2 – Installation of test set-up . 10
Figure 3 – Example of test set-up for shielded circular connectors . 11
Figure 4 – Example of test set-up for shielded rectangular connectors . 11
Figure 5 – Example of test set-up for shielded printed board connectors . 12
Figure 6 – Calibration test set-up . 13
Figure 7 – Example of a shielding attenuation (shielding effectiveness) plot . 14

IEC 60512-23-3:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC
EQUIPMENT – TESTS AND MEASUREMENTS –

Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness
of connectors and accessories – Line injection method

FOREWORD
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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.
International Standard IEC 60512-23-3 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
for electrical and electronic equipment.
This second edition cancels and replaces the first edition, published in 2000. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) an introduction has been added to provide some guidance to this document in view of
concurrent test method 23g in the same family;

– 4 – IEC 60512-23-3:2018 © IEC 2018
b) the frequency range for which this test method is considered reliable moved from 1 GHz
to 3 GHz, to be consistent with Figure 7 (unchanged) and current industry practice and
need;
c) update to IEC 62153-4-6:2017 of former normative reference IEC 60096-4-1:1990,
withdrawn and incorrect (should have been IEC 61196-1:1995, also withdrawn);
d) update to current subclause numbers of IEC 62153-4-6:2017 what were the previous
subclause numbers referenced in IEC 61196-1:1995 (wrongly attributed to IEC 60096-4-
1:1990). For immediate understanding the title of these subclauses has been added;
e) alignment of title to the current scope of SC 48B (connectors) and inclusion of electrical
equipment as target application of said connectors (per current scope of TC 48) and
explicit reference to the method – line injection – for the measurement of transfer
impedance;
f) symbols SE for shielding effectiveness and Z for surface transfer impedance added
T
throughout the document;
g) list of connectors to which the test method is applicable – previously in 3.1 – moved in
scope;
h) former name of AECMA organization changed to the current ASD-STAN;
i) “specimen” used instead of “sample” throughout the document;
j) clarification in the title of what transfer impedance is described in Table 3 and editorial
improvement of the same;
k) “dielectric constant” changed into the updated term “relative permittivity”;
l) added a note to warn about the fact that this test method requires in 6.6 a TDR with more
stringent rise time of less than 100 ps than the value of less than 350 ps specified both in
IEC 62153-4-6 and in EN 50289-1-6 for the similar line injection method applied to
screened cables, whereas test 23g of IEC 60512-23-7 specifies for the same purpose a
TDR with a rise time of less than 200 ps;
m) adoption of term “connector housing” [IEV 581-27-10] instead of “shell” to address the
connector accessory providing the shielding;
n) title “Transfer impedance Z [Ω]” added to the ordinate axis on the left side of double log
T
diagram of Figure 7;
o) explanatory note to clarify the conversion formula for SE from Z added.
T
The text of this International Standard is based on the following documents:
FDIS Report on voting
48B/2631/CDV 48B/2670/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on votin
...