IEC/TC 48 - IEC_TC_48

IEC 60512-28-100:2024 specifies the test methods for signal integrity and transmission performance for connectors specified in respective parts of IEC 60603-7, IEC61076-1, IEC 61076-2, IEC 61076-3 and IEC 63171 series of standards for connecting hardware applications from 0,1 MHz up to 2 000 MHz, with reference to this document. Note: This document is also suitable for testing signal integrity and transmission performance of connectors up to a lower value of maximum frequency; however, the test methodology specified in the detail specification for any given connector remains the reference conformance test for that connector. The list of connector series of standards does not preclude referencing this document in other connector manufacturer’s specifications or published standards. Test procedures provided herein are: - insertion loss, test 28a; - return loss, test 28b; - near-end crosstalk (NEXT) test 28c; - far-end crosstalk (FEXT), test 28d; - transverse conversion loss (TCL), test 28f; - transverse conversion transfer loss (TCTL), test 28g. Other test procedures referenced herein are: - shield transfer impedance (ZT), see IEC 60512‑26‑100, test 26e. - coupling attenuation (aC), see IEC 62153-4-7 and IEC 62153‑4‑12. - low frequency coupling attenuation (aCLF) see IEC 62153-4-7 and IEC 62153-4-15 This edition includes the following significant technical changes with respect to the previous edition: -The frequency range has been modified to start at 0,1 MHz instead of 1 MHz, to include single-pair connectors. -All tables and requirements have been revised down to 0,1 MHz, and partially improved to reduce the impact of the test fixture. -Formulae to calculate the S-parameters from single-ended parameters have been added. -A note was added for those parameters which are not applicable to single-pair connectors.

IEC 60352-9:2024 provides guidelines for welding and testing of ultrasonically welded connections and includes requirements, tests and practical guidance information. Ultrasonic welding is a form of cold friction welding that is becoming increasingly popular in many industries. This type of welding uses ultrasonic vibration to join materials together, creating a bond that is both strong and reliable. Ultrasonic welding has been identified as a process in ISO 4063-41 by the International Organization for Standardization (ISO). The process of ultrasonic welding relies on high frequency ultrasound waves being used to create frictional heat at the connection point. High temperature is not required for this special method of welding, making it one of the most cost-effective ways to join two materials together. It also requires fewer steps than traditional methods, meaning it can be completed quickly and with minimal resources. Ultrasonic welding has been around for decades but only recently has become more widely utilized due to advances in technology and its availability at lower cost. It can be used on many different materials including plastics, rubbers, metals, textiles, and composites. Due to its precision and strong bonds it creates, it has become extremely popular in manufacturing processes such as automotive industry, electronics industry, furniture production and even medical device production. This document covers ultrasonically welded connections made with stranded or flexible wires (class 2, 5 or 6 per IEC 60228) of copper or copper alloy, as well as of aluminium or aluminium alloy. These welded metal-to-metal connections shall employ wires with cross-sectional area of 0,08 mm2 to 160 mm2 and shall not exceed a total cross-sectional area, in case of wire bundle, of 200 mm2. For aluminium or aluminium alloy wires, the minimum required cross-sectional area is 2,5 mm2. Additionally, information on materials, data from industrial experience and test procedures are included to ensure electrically stable connections under prescribed environmental conditions. Lastly, this document aims to achieve comparable results when using ultrasonic welding equipment with similar performance and specifications as specified by the termination manufacturer.

This part of IEC 61969 specifies a set of basic environmental requirements and tests, as well as safety aspects for outdoor enclosures for electrical and electronic equipment, under conditions of non-weatherprotected locations above ground. The purpose of this document is to define a minimum level of environmental performance in order to meet requirements of storage, transport and final installation. The intention is to establish basic environmental performance criteria for outdoor enclosure compliance.

IEC 60512-99-003:2023 is used for the assessment of connectors within the scope of SC 48B that are used in balanced single-pair communication cabling with remote power, in support of e.g., IEEE 802.3 remote powering applications for point-to-point connections. The object of this document is to detail a test schedule to determine the ability of sets of single-pair connectors as defined in the IEC 63171 series to withstand a minimum of 100 mechanical operations with electrical load, where an electrical current is being passed through the connector in accordance with IEC 60512-9-3 during the separation (unmating) step. This document does not cover multidrop powering applications of single-pair connectors.

IEC 61076-2-115:2023 describes free and fixed 12P shielded circular connectors with 2 A rated current, rated voltage up to and including 50 V AC/DC, IP65/IP67 metal housing with push-pull locking (hereinafter referred to as a connectors) for use in electrical and electronic equipment. It includes overall dimensions, interface dimensions, technical characteristics, performance requirements and test methods.

This part of IEC 61969 contains design guidelines for outdoor enclosures for electrical and electronic equipment and is applicable over a wide field of mechanical, electromechanical and electronic equipment and its installation where a modular design is used. The objectives of this document are: - to provide an overview of specifications for enclosures focused on requirements for outdoor applications for stationary use at non-weather protected locations, and - to achieve product integrity under outdoor conditions and to ease product selection for the sourcing of outdoor enclosures from different vendors. These enclosures are considered to contain any equipment and provide protection for the outdoor installed facilities against unwanted environmental impacts. The installed equipment can be, but is not limited to, subracks or chassis according to IEC 60917 (all parts) or IEC 60297 (all parts). A typical outdoor enclosure is shown in Figure 1. [Figure 1]

IEC 61076-3-126:2023 covers 5-pole rectangular connectors for electric power supply up to 16 A per pole. These connectors consist of fixed and free connectors, both either rewirable or non-rewirable. This document employs the general function principles of the push-pull connector housing system described in IEC 61076‑3‑117 with IP65/IP67 degree of protection according to IEC 60529 for harsh applications. Male connectors have pin contacts with square cross-section with 1 mm side. Connectors according to this document are without breaking capacity COC according to IEC 61984, therefore they are not intended to be engaged or disengaged in normal use when live or under load.

IEC 61076-2-116:2022 specifies circular connectors size 15 with bayonet-locking, with up to 3 power contacts with rated insulation voltage up to 630 V AC/DC and rated current up to 20 A, plus PE, and up to 3 auxiliary contacts with rated insulation voltage up to 63 V AC/DC and rated current up to 10 A, that are typically used for industrial power supply and power applications, such as the feeding and control of 3-phase asynchronous motors. These connectors consist of both fixed and free connectors either rewireable or non-rewireable, with bayonet-locking. Male connectors have round contacts, either power or signal, Ø1,6 mm.

IEC 60352-6:2022 This part of IEC 60352 is applicable to insulation piercing connections made with stranded wires and tinsel wires, insulated flat conductors and flat flexible circuitries for use in electrical and electronic equipment. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under prescribed environmental conditions. The object of this document is to:  
determine the suitability of insulation piercing connections under specified mechanical, electrical, and atmospheric conditions;
provide a means of comparing test results when the tools used to make the connections, if any, are of different designs or manufacture.

IEC 60512-28-100:2019 is available as IEC 60512-28-100:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60512-28-100:2019 specifies the test methods for signal integrity and transmission performance for connectors specified in respective parts of IEC 60603-7, IEC 61076-1, IEC 61076-2, and IEC 61076-3 standards for connecting hardware applications up to 2 000 MHz. It is also suitable for testing lower frequency connectors, however, the test methodology specified in the detail specification for any given connector remains the reference conformance test for that connector. The above list of connector series of standards does not preclude referencing this document in other connector manufacturer’s specifications or published standards. Test procedures provided herein are: - insertion loss, test 28a; - return loss, test 28b; - near-end crosstalk (NEXT) test 28c; - far-end crosstalk (FEXT), test 28d; - transverse conversion loss (TCL), test 28f; - transverse conversion transfer loss (TCTL), test 28g. Other test procedures referenced herein are: - transfer impedance (ZT), see IEC 60512-26-100, test 26e. - for coupling attenuation (aC), see IEC 62153 4 12. This second edition cancels and replaces the first edition, issued in 2013, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - The title is revised from 1 000 MHz to 2 000 MHz to reflect the range of frequencies which may be tested. - All tables and requirements have been revised up to 2 000 MHz. Key words: Connectors, Signal Integrity Tests

This part of IEC 63171 describes shielded or unshielded circular connectors with 2 ways and M8 or M12 Styles, typically used for data transmission up to 600 MHz and with current carrying capacity up to 4 A, for use in areas with harsh environmental conditions. These connectors consist of fixed and free connectors either rewirable or non-rewirable. Male connectors have square cross- section contacts, for data and power transmission. M12 describes the dimensions of the styles and thread of the screw-locking mechanism according IEC 61076-2-101 of this size of circular connectors. M8 describes the dimensions of the styles and thread of the screw-locking mechanism according IEC 61076-2-104. The use of alternative locking mechanisms according to IEC 61076-2-010 or IEC 61076-2-011 are possible. The coding provided by this standard prevents the mating of accordingly coded male or female connectors to other similarly sized interfaces covered by this or other standards. These Type 5 connectors are interoperable with Type 2 connectors according IEC 63171-2, except the locking and sealing system provided by the outer shell. The shielded and unshielded connectors are interoperable for their internal transmission performance and can be exchanged. The shielded version has improved EMC and coupling properties. This part of IEC 63171 covers Type 5 connectors. Each part of this series has the associated type number equal to the number of the part in the series. All connectors in the IEC 63171 series are deemed to provide the same functions as defined in IEC 63171:2021, using different mechanical interfaces.

IEC 60512-27-200:2022 is primarily intended for use in signal integrity and transmission performance testing up to 2 000 MHz of IEC 60603-7 series 8-way connector type IEC 60603‑7‑81, according to connector test method IEC 60512‑28‑100. This part of IEC 60512 covers additional, supplemental test method specifications to extend the upper frequency for the test connectors and associated indirect-reference test fixtures used in the signal integrity and transmission performance tests specified in IEC 60512‑27‑100. In support of de-embedded crosstalk and related transmission requirements specified in IEC 60603‑7‑81, for frequencies up to 2 000 MHz, these supplemental specifications extend the upper test frequency from IEC 60512‑27‑100 up to 500 MHz to the upper test frequency of IEC 60512‑28‑100 up to 2 000 MHz. This document covers measurements of connector signal integrity and transmission performance of 8-way connector types defined in these published connector series standards: - IEC 60603‑7‑2 - IEC 60603‑7‑3 - IEC 60603‑7‑4 - IEC 60603‑7‑5 - IEC 60603‑7‑41 - IEC 60603‑7‑51 - IEC 60603‑7‑81. This document covers respective performance test procedures of connector signal integrity and transmission performance defined in these published connector test method series standards: - IEC 60512‑26‑100 - IEC 60512‑27‑100 - IEC 60512‑28‑100.

IEC 60917-1:2019 is available as IEC 60917-1:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60917-1:2019 specifies the relationships between equipment practices and the modular order which are applicable to the main structural dimensions of electronic and electrical equipment mounted in various installations where dimensional interfaces have to be considered for mechanical compatibility. This document also established terms for parts and assemblies of mechanical structures for electrical and electronic equipment, to clarify the specific relations between equipment practices and modular order. This second edition cancels and replaces the first edition published in 1998 and its Amendment 1:2000. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) added information on newly developed detail specification standards of mechanical structures for the electrical and electronic equipment practices; b) added information on newly developed performance test standards for the verifications of environmental performances and safety aspects and issues of the thermal performance and thermal management for the electrical and electronic equipment practices; c) introduced the relations between the mechanical structure for electrical and electronic system, the verification of environmental performance and safety aspects and issues of the thermal performance and thermal management for the electrical and electronic equipment practices. Key words: IT Cabinets, Mechanical Structures

IEC 61076-3-123:2019. covers hybrid rectangular connectors with a 3 poles 16 A electric portion for power supply and a duplex fibre optic connector type LC portion for data transmission. These connectors consist of fixed and free connectors, either rewirable or non-rewirable (for both portions) and use the rectangular push-pull housing described in IEC 61076-3-117 with IP65/IP67 degree of protection, for harsh applications. The mating dimensions of such housings allow fulfilling the performance class Category I according to IEC 61753-1-3 in regards to the fibre optic portion of the connector with the exception of the operating temperature range which is –25 °C/+70 °C. The electric portion may have different rated insulation voltages. Male connectors have 3 electric round contacts Ø1,6 mm, with 16 A rated current. The fibre optic portion provides data transmission by using the common mating configurations for all variants of the type LC duplex fibre optic connectors as defined in IEC 61754-20, for dedicated fibre types and fibre termination technology covered therein. The different codings provided by this document prevent the mating of accordingly coded male or female connectors to any other similarly sized interfaces covered by other standards and the cross-mating between the different codings provided by this document. Key words: Rectangular Connectors, Hybrid Connectors, Power Supply and Fiber Optic Data Transmission.

IEC 60512-11-1:2019 when required by the detail (product) specification, is used for testing connectors within the scope of IEC technical committee 48. This test may also be used for similar devices (i.e. when the degradation mechanisms are the same) when specified in a detail (product) specification. The object of this test is to define a standard test method to assess the ability of connectors to function in a specified manner, in a specified environment which might be encountered during normal use, including storage. This document provides a standard composite test method for determining the suitability of connectors when subjected to environmental conditions consisting of a sequence of temperature, humidity and, where required, low air pressure environmental stresses. Key words: Connectors, Climatic Tests

IEC 61076-3-106:2023 constitutes a detail product specification for 8-way connectors for data transmission with frequencies up to 600 MHz. It covers protective housings for upgrading existing 8-way shielded and unshielded connectors utilizing the interface described in the IEC 60603-7 series to IP65/IP67 rating according to IEC 60529, for use in industrial environments. The housings cover a variety of different locking mechanisms according to this document and a variety of different mounting configurations and termination types which are detailed in the IEC 60603-7 series. Common mating configurations for all variants are defined in IEC 60603-7. The mating dimensions for the housings under Clause 3 allow the mating conditions under IEC 60603-7 to be fulfilled. The fully assembled variants (connectors) described in this document incorporate fully compliant IEC 60603-7 series fixed and free connectors.

This part of IEC 61076 covers 10-way, shielded, free and fixed rectangular connectors for data transmission with frequencies up to 500 MHz and specifies the common dimensions, mechanical, electrical and transmission characteristics and environmental requirements as well as test specifications respectively. Connectors covered in this document are provided in three codings that differ only for the position of the polarization key and keyway, in view of their differently intended use: - Connectors Type A and C are intended for 10/100 Mbit/s as well as for 1/ 2,5 / 5 /10 Gbit/s Ethernet communication. - Connectors Type B are intended for all other non-Ethernet applications such as signalling, serial or other industrial bus communication systems. A-coding: The 45° cut corner used as polarization key and keyway system is located on the lower left corner of the male fixed connector (viewed from mating face) (Figures 5a, 5b). B-coding: The 45° cut corner is located on the upper left corner of the male fixed connector (Figures 5c, 5d). C-coding: There are two 45° corners located at the upper left and lower left corner (Figures 5e, 5f). In this document, the three codings, A, B, and C are designated as "Type A", "Type B" and .Type C".

IEC 62966-1:2019 defines the dimensions and mechanical requirements of aisle containment for information technology (IT) cabinets. The cabinets concerned are dealt with in the standard series IEC 60297 and IEC 60917. The objective of this document is to stipulate properties and requirements of aisle containment ensuring cost effective installation, energy efficient and user-friendly operation of IT equipment in data centres and server rooms. Key words: IT Cabinets, Aisle Containment

This part of IEC 60512 is used for testing connectors within the scope of SC 48B that are used in twisted pair communication cabling with remote power, such as ISO/IEC 11801 Class D (or better), balanced cabling in support of IEEE Std 802.3bt, (PoE Plus - Power over Ethernet Plus). The object of this document is to detail a test schedule to determine the ability of pairs 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.

This part of IEC 60512 is used for 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 802.3btTM (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 sets of connectors to withstand a 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.

IEC 61587-1:2022 specifies environmental requirements, test set-ups, as well as safety aspects for empty enclosures, i.e. cabinets, racks, subracks, chassis, chassis integrated subracks and associated plug-in units under indoor condition use and transportation. It defines classifications (product performance levels) for these products, regarding and simulating the usually arising loads during their use. For mechanical static and dynamic load tests typical examples with dummy loads are used. The purpose of this document is to establish defined levels of physical performance in order to meet certain requirements of manufacture, storage, transport and final location conditions. This document applies in general only to the above cited mechanical structures. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Modification of title. b) Revision of Clauses 6, 7 and 8 including new defined test setups. c) Compatibility with IEC 61587-2, IEC 61587-3 and IEC 61587-5.

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.

IEC 60512-1:2018 is available as IEC 60512-1:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60512-1:2018 is intended to be used as a basis for tests and measurements specifications for electrical connectors. It provides guidance and reference for tests and measurements within the IEC 60512 series. It includes the description and the practice of the various phases of tests and measurements (preparation, tests and measurements, requirements, documentation), in addition to basic terms and definitions applicable to any part of the IEC 60512 series. This standard shall be used in conjunction with IEC 60512-1-101 and relevant part(s) of series IEC 60512. Part 60512-1-100 provides the list of the existing test and measuring methods published within series IEC 60512. Detail tests and measurements specifications are applicable to electrical connectors and their components (e.g. connector inserts, connector housings, locking mechanisms, contacts and terminations) within the scope of technical committee 48. They may also be used for similar devices when specified in a detail product specification. Detail tests and measurements specifications are used in conjunction with detail product specifications which prescribe the tests to be used, the required degree of severity for each of them and the permissible performance limits. The detail product specification also specifies the deviations in procedures, which may be required when applying a test to the type of connector or its component under consideration, and it further specifies any special procedures which may be required. This fifth edition cancels and replaces the fourth edition, published in 2001. It constitutes a technical revision. This edition includes the following main technical changes with respect to the previous edition: – in Clause 3, only terms relating to the testing are defined, and IEC 61076-1 is referred to for terms of connectors. – Clause 4 (Numbering of tests and measurement specification) is added. – Subclause 5.1.2 (Calibration) is added. – in Clause 6 (Test), test procedure follows IEC 60068-1. Key words: Connectors, Test Specification

IEC 60297-3-110:2018 specifies dimensions, specification for installation, environmental aspects and safety aspect of residential racks and cabinets based on IEC 60297 series, for smart houses, likely to be part of smart cities. Key words: Racks, Residential, Cabinets, Smart house

IEC 61076-2-011:2021 describes the bayonet coupling interface of circular connectors that are typically used for industrial process measurement and control. These connectors consist of fixed and free connectors either rewireable or non-rewireable, with bayonet-coupling. These connectors may have glass to metal seal inserts. They have male or female contacts and are deemed to be intermateable with corresponding free connectors produced according to this document. Male connectors have round contacts Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm and Ø 1,0 mm. Different codings prevent the mating of these individually coded fixed connectors (and consequently of individually coded free connectors deemed to couple with them) to other interfaces and cross-mating between the different codings. However, the styles and interface dimensions, except for the coupling mechanism, are as given in 4.3 of IEC 61076-2- 101:2012 and 4.3.1 of IEC 61076-2-109:2014. The male type B12 circular connectors are interoperable with the female type B12 connector of the same coding and ways. The female type B12 connectors are interoperable with the male type B12 and M12 (threaded screw coupling) connector of the same coding and ways.

IEC 61076-2-010:2021 specifies circular connectors with a push-pull locking mechanism of a size derived from, and thus being compatible with M12 screw-locking connectors (free connectors with screw-locking according to IEC 61076-2-101, IEC 61076-2-109, IEC 61076-2-111 or IEC 61076-2-113 are compatible with push‑pull fixed interfaces according to this document) and with mating interfaces according to IEC 61076-2-101, IEC 61076-2-109, IEC 61076-2-111 (except codings E in general and coding F for inner push-pull) or IEC 61076-2-113. A fixed connector with push-pull locking according to this document is intermateable with a correspondingly coded free connector with M12 screw-locking according to any of the above mentioned standards. M12 is the dimension of the thread of the screw-locking mechanism of circular connectors with M12 screw-locking. IEC 61076-2-012 defines another inner push-pull for fixed female connectors which is however not compatible to the inner push-pull defined in this document. Annex C shows the different styles of female free connectors to extend male free connectors. This document covers both: a) power connectors with current ratings up to 16 A and voltage ratings up to 630 V, typically used for power supply and power applications in industrial premises, and b) connectors for data and signal transmission with frequencies up to 500 MHz. These connectors consist of both, fixed and free connectors, either rewirable or non-rewirable, with M12 push-pull locking as explained above. Male connectors have round contacts from Ø 0,6 mm up to Ø 1,5 mm. In addition, the push-pull mechanisms consist of 2 different push-pull designs: c) An outer push-pull for male and female fixed connector, where the locking groove is placed onto the outer cylindric surface of the housing. The outer push-pull for female fixed connectors is made for 2 different types of male connectors. It has locking means for both types on its outer surface. For design and dimensions see 5.3.2 and 5.3.3. d) An inner push-pull for female fixed connectors and for male free connectors, where the locking means are placed onto the inner cylindric surface of the housing. For design and dimensions see 5.3.4. The different codings provided by IEC 61076-2 series detail specifications mentioned within this document prevent the mating of accordingly coded male or female connectors to any other similarly sized interfaces, covered by other standards and the cross-mating between the different codings provided by any other IEC 61076-2 series detail specification mentioned within this document.

IEC 62610-2:2018 provides for compatible methods of configuring forced air cooled cabinets assembled with associated subracks and/or chassis in accordance with the IEC 60297 and IEC 60917 series. This document contains the following: a) thermal interfaces of subracks and/or chassis-based equipment in a cabinet, described by: • reference temperature, • preferred airflow conditions, • airflow volume conditions, • standard air; b) procedures for determining compatible forced airflow conditions in a cabinet by applying typical thermal interface conditions. The drawings used are not intended to indicate product design. They are only for explanatory indications for determining forced air cooling. Keywords: Cabinets, Subracks, Forced Air Cooling, Thermal Management

IEC 61076-3-122:2021 covers 8-way, shielded, free and fixed rectangular connectors for I/O and data transmission with frequencies up to 500 MHz. It is intended to specify the common dimensions, mechanical, electrical and environmental characteristics and tests for this family of connectors. Connectors complying with this document provide an ingress protection level of IP20; however, they are particularly suited for industrial environments with a high level of vibration. There are two classes of connectors defined in this document, indicated by "class A" and "class B" which are distinguished by some electrical and mechanical characteristics to meet the particular sets of requirements of some industrial applications. Class A meets the requirements defined in Ed.1 of this document. With the two classes A and B, the two codings Type I and II, and the two sets of transmission requirements according to the component categories Cat 5 and Cat 6A as defined in ISO/IEC 11801-1, this document specifies 2 × 2 × 2 = 8 variants. All connectors covered by this document feature a current-carrying capacity beyond the minimum requirement of 0,75 A per pin for an ambient temperature of 60° C as defined in ISO/IEC 11801 1. This second edition cancels and replaces the first edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Title modified. b) Introduction of two sets of requirements for connectors of "class A" and "class B" where class A matches the requirements defined in the previous edition. c) Definition of new performance requirements for frequencies up to 500 MHz in addition to the performance requirements up to 100 MHz provided with the previous edition. d) Re-structuring to reflect the commonalities of and differences between connector Type I and Type II. e) Revision of drawings to clarify some dimensions. e) The derating diagram has been corrected to align it with the upper limiting temperature in the climatic category, with no reduction of performance for the target applications.

IEC 61587-6:2021 specifies security aspects and security performance levels of the mechanical construction of indoor cabinets in accordance with IEC 60917 (all parts) and IEC 60297 (all parts). This document does not address vandalism. This second edition cancels and replaces the first edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Revised and expanded terms and definitions. b) Additional information in 4.2 Access security level of the cabinet. c) Revised requirements for Security performance levels of cabinets and added additional levels in Table 2 – Security performance levels of cabinets. d) Added a column for panel strength in Table 3 – Security performance levels of cabinet – mechanical. e) Revised test for mechanical lock (and hinges added) in 5.2.2 Tests for strength of mechanical locks and hinges. f) Added 5.2.4 Tests for panel strength. g) Added additional description of Key function in Table 5 – Security performance levels of key. h) Revised test method for handles in Annex A.

IEC 63171:2021 covers shielded and unshielded free and fixed connectors, circular or rectangular, for balanced single-pair data transmission, with current-carrying capacity. It specifies the IEC 63171 series' common mechanical, electrical and transmission characteristics and environmental requirements, as well as required test specifications. This document does not describe a specific mating interface. Detail specifications of mating interfaces complying with this document can be found in the family of detail specification standards IEC 63171-X (type X). Within their own type, the shielded and unshielded connectors are interoperable for their transmission performance and can be exchanged; though the shielded version has improved alien crosstalk and coupling attenuation properties

IEC 60512-8-3:2018 this part of IEC 60512, when required by the detail (product) specification, is used for testing connectors within the scope of IEC technical committee 48. It may also be used for similar devices, when specified in a detail (product) specification. The object of this document is to detail a standard test method to assess the robustness of the actuating lever of a connector mating or release mechanism. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: this edition reflects IEC 60512-1-101, Blank detail specification and Subclause 4.2 (Preparation of specimen) is improved.

IEC 60512-15-2:2018 This part of IEC 60512, when required by the detail (product) specification, is used for testing connectors within the scope of technical committee 48. It may also be used for similar devices when specified in a detail (product) specification. The object of this document is to detail a standard test method to assess the effectiveness of the retaining system of a connector insert within a connector housing to withstand axial forces likely to be encountered during normal use, i.e. the highest insertion and withdrawal forces into/from a mating counterpart, without the connector insert being dislodged from the connector housing. The test method detailed in this document is a companion to the one detailed in IEC 60512-15-3 This second edition cancels and replaces the first edition, published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the test method B (pressure method) suitable for testing hermetic connector has been added. This edition reflects IEC 60512-1-101, Blank detail specification.

IEC 60352-7:2020 is available as IEC 60352-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60352-7:2020 is applicable to spring clamp connections made with stripped wire without further preparation: - solid conductors of 0,32 mm to 3,7 mm nominal diameter (0,08 mm2 to 10 mm2 cross‑section), or - stranded conductors of 0,08 mm2 to 10 mm2 cross-section, or - flexible conductors of 0,08 mm2 to 10 mm2 cross-section, according to IEC 60228 or IEC 60189-3 for use in electrical and electronic equipment and components. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under prescribed environmental conditions. The object of this document is to determine the suitability of spring clamp connections under specified mechanical, electrical and atmospheric conditions. This second edition cancels and replaces the first edition of IEC 60352-7, published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) correction of the two flow charts in Figure 6 and Figure 7, b) split the content into more clauses for better separation between full test schedule and basic test schedule, c) relocating the content of former Clause 6 Practical guidance into an informative Annex A, as now common in the IEC 60352 series for solderless connections, d) clarification on conductor types with reference to classes defined in IEC 60228.

IEC 61076-3-119:2017(E) establishes specifications and test requirements for 10-way shielded and unshielded rectangular, free and fixed connectors, with push-pull coupling, for data transmission with frequencies up to 100 MHz and for use in industrial environments. This document specifies free and fixed connectors with round contacts, suitable for screw or crimp terminations. Other terminations techniques, such as solder or printed board connections are upon agreement between manufacturer and user. The free and fixed connectors have a push-pull locking mechanism for IP65 and IP67 protection according to IEC 60529. Connectors according this document are without breaking capacity COC according to 3.9 of IEC 61984:2008, therefore they are not intended to be engaged or disengaged in normal use when live or under load, if not otherwise specified by the manufacturer. Key words: Connectors, Rectangular Connectors, 10 Way Connectors, Push-Pull Coupling

IEC 61076-2-111:2017 specifies 4 to 6-way circular connectors with M12 screw-locking with current ratings up to 16 A and voltage ratings of 63 V or 630 V, that are typically used for power supply and power applications in industrial premises. These connectors consist of both, fixed and free connectors either rewireable or non-rewireable, with M12 screw-locking. Male connectors have round contacts Ø1,0 mm and Ø1,5 mm. The different codings provided by this document prevent the mating of accordingly coded male or female connectors to any other similarly sized interfaces, covered by other standards and the cross-mating between the different codings provided by this document. M12 is the dimension of the thread of the screw locking mechanism of these circular connectors. Keywords: Connectors, Circular Connectors, M12.

IEC 60603-7:2020 is available as IEC 60603-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60603-7:2020 covers 8-way, unshielded, free and fixed connectors and is intended to specify the common dimensions (interface dimensions), mechanical, electrical and environmental characteristics and tests for the family of IEC 60603-7-x connectors. These connectors are intermateable (according to IEC 61076-1 level 2) and interoperable with other IEC 60603-7 series connectors. This fourth edition cancels and replaces the third edition, published in 2008, its Amendment 1:2011 and its Amendment 2:2019. It constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: - Revised the definitions for intermateability and interoperability; added new definitions. - Corrected dimension line for dimension AZ2 in Figure 5. - Corrected dimension line for dimension F1 in Figure A.1. - Revised the reference to ISO/IEC 11801 to ISO/IEC 11801-1. - Added lower limiting temperature and upper limiting temperature definitions. - Revised Table 1 to Table 8 so the column order is Minimum-Nominal-Maximum dimensions (ascending order). - Corrected Table 7: Climatic category and Upper temperature values to 90 °C (to be consistent with the graph in Figure 10 and Note 1 in Figure 10). - Revised the wording in 8.2, contact resistance, for clarification. - Revised Figure 11 and Figure 12 and the wording in the Key below for clarification. - Removed the sentences under the figure in the Introduction. - Added Annex E.

IEC 61076-2-114:2020 describes circular connectors with M8 screw locking typically used for data and power transmissions in industrial applications. These connectors consist of fixed and free connectors that are either rewireable or non-rewireable. Data transmission performance is for Category 5 up to 100 MHz. Two coded versions, identified as D-coded and P-coded, are provided that differ by their pin size and optionally by number of poles, hence by the function provided for field applications. Male connectors have round contacts Ø 0,8 mm for D-coded, and Ø 1 mm for P-coded connectors. The coding provided by this document prevents the mating of accordingly coded male or female connectors to any other similarly sized interfaces covered by other standards.

IEC 61076-3-104:2017(E) establishes uniform specifications, type testing requirements for 8 way, shielded free and fixed connectors for data transmissions with frequencies up to 2 000 MHz, and used as category 7A connectors in class FA cabling systems specified in ISO/IEC 11801-1. It contains all test methods and sequences, severity and preferred values for dimensions and characteristics. This third edition of IEC 61076-3-104 cancels and replaces the second edition, published in 2006, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the title has been changed to incorporate transmissions with frequencies up to 2 000 MHz; - the drawings of some styles have been corrected for clarification; - Figures 23 and 24 have been updated; - Figure 3 has been updated to include reference dimensions and dimensional format changes; - the dimensions of Figure 7 have been updated; - the type designation and ordering information has been removed for consistency with the most updated sectional specification; - the test schedule was updated to include appropriate IEC 60512 Test Nos; - the electrical performance requirements have been revised for 2 GHz level and interchangeability information has been added for performance categories.

IEC 62966-2:2020 is dedicated to aisle containment techniques for information technology (IT) equipment typically used in data centres, describes the quantification of its air tightness, in particular the air loss ratio that describes the content of the volumetric flow not used for cooling the IT equipment. This ratio provides an index of efficiency, being inversely proportional to efficiency (the lower this ratio, the higher the efficiency). This document provides methods to measure an aisle containment air leakage rate and defines a classification system for aisle containment leakage. This document defines: - the measurement of the air leakage of the individual components of an aisle containment; - a method for calculating the air leakage of an aisle containment based on its individual components; - a method for calculating the air leakage rate of an aisle containment in relation to the utilised IT equipment; - a classification system for aisle containment leakage.

IEC 61076-2-012:2020 specifies circular connectors with an inner push‑pull locking mechanism of a size derived from and thus being compatible with M12 screw‑locking connectors and with mating interfaces according to IEC 61076‑2‑101, IEC 61076‑2‑109, IEC 61076‑2‑111 and IEC 61076‑2‑113. A female fixed connector with inner push-pull locking according to this document is intermateable with a correspondingly coded male free connector with M12 screw-locking according to IEC 61076-2-101, IEC 61076-2-109, IEC 61076-2-111 or IEC 61076-2-113. This document covers both: a) power connectors with current ratings up to 16 A and voltage ratings up to 630 V, typically used for power supply of electrical equipment used in industrial premises, and b) connectors for data and signal transmission with frequencies up to 500 MHz. These connectors consist of both fixed and free connectors, either rewirable or non‑rewirable, with M12 inner push‑pull locking as explained above. Male connectors have round contacts from Ø0,6 mm up to Ø1,5 mm. This document covers various types of connectors identified by their "codings" with different contact arrangement, not mutually interchangeable. The design of the inner push‑pull mechanism prevents the unintended mating of the male inner push‑pull free connector with the female connector with M12 screw‑locking even for identical coding. Some styles of free connectors with female contacts covered in this document are equipped with both inner and outer push-pull locking for intermateability also with correspondingly coded male fixed or free connectors according to IEC 61076-2-010.

IEC 60352-5:2020 is applicable to solderless press-in connections for use in electrical and electronic equipment and components. The press-in connection consists of a termination having a suitable press-in zone which is inserted into a hole of a board. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under specified environmental conditions. The object of this document is to determine the suitability of press-in connections under mechanical, electrical and atmospheric conditions as specified by the manufacturer of the press-in termination and to provide a means of comparing test results when the tools used to make the connections are of different designs or manufacture. This fifth edition cancels and replaces the fourth edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant changes with respect to the previous edition:
revising the scope by removing the wording "… telecommunication equipment and in electronic devices employing similar techniques" and replacing it by "… electrical and electronic equipment and components" in the first paragraph;
adding terms and definitions for 'board', 'hole' and 'metal board' to recognize that press-in terminations are being used in many non-printed board materials;
editorial changes to clarify the difference between the two test schedules for qualification and application;
modification of upper limit of copper thickness of the plated-through-hole to reflect actual market trends and manufacturing practices;
removal of bending test, as this test is very specific for applications of press-in technology no longer common;
adding graphs to document the press-in and push-out force, since this is common testing practice and provides further insight into mechanical performance of the contact zone;
reducing the number of test specimens required, since in previous testing scheme a lot of test samples were discarded;
new wording in 4.5 for cracked and bent terminations;
added Figure 7b to show V and A connection locations when the press-in termination does not protrude through the bottom side of the board.

IEC 61969-3:2020 is available as IEC 61969-3:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61969-3:2020 specifies a set of basic environmental requirements and tests, as well as safety aspects for outdoor enclosures under conditions of non-weather protected locations above ground. The purpose of this document is to define a minimum level of environmental performance in order to meet requirements of storage, transport and final installation. The intention is to establish basic environmental performance criteria for outdoor enclosure compliance. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - alignment with the content of ETSI EN 300 019 and IEC 60721 series latest editions, particularly with the actualization of climate conditions; - new requirements added to reflect market requirements on environmental issues; - improvement on terminology and overall editorial improvement.

IEC 60352-4:2020 is applicable to non-accessible ID connections for which the tests and measurements according to Clauses 6 through 8 are suitable and which are made with: – appropriately designed ID terminations; – wires having solid round conductors of 0,25 mm to 3,6 mm nominal diameter; – wires having stranded conductors of 0,05 mm2 to 10 mm2 cross-sectional area; for use in electrical and electronic equipment and components. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under prescribed environmental conditions. There are different designs and materials for ID terminations in use. For this reason, only fundamental parameters of the termination are specified, while the performance requirements of the wire and the complete connection are specified in full detail. The purpose of this document is: – to determine the suitability of non-accessible ID connections under specified mechanical, electrical and atmospheric conditions; – to provide a means of comparing test results when the tools used to make the connections, if any, are of different designs or manufacture. This second edition cancels and replaces the first edition, published in 1994, and its Amendment 1 (2000). This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Transferred Clauses 9 to 13 into Annex A (informative). b) The figures were re-drawn for clarity.

IEC 60512-9-5:2020 is available as IEC 60512-9-5:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60512-9-5:2020 when required by the detail product specification, is used for testing connectors or solderless connections within the scope of technical committee 48. It may also be used for similar devices when specified in a detail product specification. The object of this document is to detail a standard method for subjecting solderless connections to thermal stress conditioning by cyclic current loading. This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - added method B and renamed the former test method as method A, to provide an alternative with more adjustable time “ON” and “OFF” for products with larger thermal mass. - added introduction to provide background of this revision.

IEC 61969-1:2020 is available as IEC 61969-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61969-1:2020 contains design guidelines for outdoor enclosures and is applicable over a wide field of mechanical, electromechanical and electronic equipment and its installation where a modular design is used. The objectives of this document are: - to provide an overview of specifications for enclosures focused on requirements for outdoor applications for stationary use at non-weather protected locations, and - to achieve product integrity under outdoor conditions and to ease product selection for the sourcing of outdoor enclosures from different vendors. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - alignment with the content of ETSI EN 300 019 and IEC 60721 series latest editions, particularly with the actualization of climate conditions; - new requirements added to reflect market requirements on environmental issues; - improvement on terminology and overall editorial improvement.

IEC 60352-3:2020 is applicable to ID connections which are accessible for tests and measurements according to Clauses 6 through 8 and which are made with: – appropriately designed accessible ID terminations, – wires having solid round conductors of 0,25 mm to 3,6 mm nominal diameter, – wires having stranded conductors of 0,05 mm2 to 10 mm2 cross-sectional area, for use in electrical and electronic equipment and components. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under prescribed environmen-tal conditions. There are different designs and materials for accessible ID terminations in use. For this reason only fundamental parameters of the termination are specified, while the perfor-mance requirements of the wire and the complete connection are specified in full detail. The purpose of this document is: – to determine the suitability of accessible ID connections under specified mechanical, electrical and atmospheric conditions; – to provide a means of comparing test results when the tools used to make the con-nections, if any, are of different designs or manufacture. This second edition cancels and replaces the first edition published in 1993. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the pre-vious edition: a) Subclause 7.2.2: reduce the limit of duration of contact disturbance to 1 µs. b) Subclause 7.2.3: reduce the limit of duration of contact disturbance to 1 µs. c) Transferred Clauses 9 to 13 to Annex A (informative). d) The figures were revised for clarity.

IEC 61076-8-101:2020 describes 2-pole or 3-pole power plus 2-pole signal shielded and sealed connectors with plastic housing (hereinafter referred to as a connector) for electrical and electronic equipment, including overall dimensions, interface dimensions, technical characteristics, performance requirements and test methods. This document is applicable to electrical connectors with sealing and shielding requirements meeting this document, with a rated voltage up to and including 750 V a.c. or 1 000 V d.c. and a current rating of 40 A, in the field of electrical and electronic equipment.

IEC 63171-1:2020 covers two-way, shielded or unshielded, free and fixed connectors for data transmission with frequencies up to 600 MHz and with current carrying capacity up to 2,0 A at 60 °C. It is intended to specify the common dimensions, mechanical, electrical, signal integrity, environmental characteristics, reliability specifications and corresponding tests for these connectors.

IEC 61076-8-100:2020 describes 2-pole or 3-pole power plus 2-pole signal shielded and sealed connectors with plastic housing (hereinafter referred to as a connector) for electrical and electronic equipment, including overall dimensions, interface dimensions, technical characteristics, performance requirements and test methods. This document is applicable to electrical connectors with sealing and shielding requirements meeting this document, with a rated voltage up to and including 750 V a.c. or 1 000 V d.c. and a current rating of 20 A, for applications in the field of electrical and electronic equipment.