CLC/SR 94 - All-or-nothing electrical relays

IEC 63522-8:2024, when required by the detail specification, is used for testing all kinds of relays. This test can also be used for similar devices when specified in a detail specification. This document defines a standard test method to ensure that the relay times are within the specified limits.

This part of the IEC 61812 series applies to time relays and coupling relays for industrial applications (e.g. control, automation, signal and industrial equipment) and for automatic electrical controls for use in, on, or in association with equipment for residential and similar use. The term "relay" as used in this document comprises all types of relays with specified time functions and coupling relays, other than measuring relays. This document defines type test and routine test to confirm the service condition.

IEC 62246-4:2023 gives additional requirements for the evaluation of functional characteristics on reed switching components operated by magnetic actuator and gives guidance for their implementation in selected applications. This document specifies test and measurement procedures for the application of reed switch (contact) based magnetic sensors. In case the application of a reed contact magnetic sensor determines additional requirements exceeding those specified in this document, the sensor is evaluated with this application in accordance with the relevant IEC or ISO standard(s) (e.g. IEC 62061 or ISO 13849 series, IEC 60335-1 and relevant parts of the IEC 60335-2 series, IEC 60730-1, IEC 61373, ISO 16750-3). This document does not apply to: – sensing or monitoring of the position of elements of interlocking devices for movable guards (see ISO 14119); – sensing or monitoring of the position of elements of pressure sensitive protective equipment (PSPE, see ISO 13856 series); – electrical equipment for measurement, control, and laboratory use (see IEC 61010-1); – aircraft – proximity switches (see ISO 6859-1). Information contained in this document is relevant to the application of a magnetic sensor on new installations as well as modifications to existing installations.

This International Standard applies to particular all-or-nothing electrical relays denominated solid-state relays intended for performing electrical operations by single step function changes to the state of electric circuits between the OFF-state and the ON-state and vice versa. This document deals with solid-state relays which are intended for incorporation in other products or equipment. As such, solid-state relays are considered to be components and this document defines the basic safety-related and functional requirements for solid-state relays as stand-alone components. Such solid-state relays are incorporated in products or equipment which themselves have to comply with the relevant product and/or application standard(s) to meet their intended application. The following are examples of such applications: - general industrial equipment; - electrical facilities; - electrical machines; - electrical appliances; - office communications; - building automation and environmental control; - automation and process control; - electrical installation engineering; - medical engineering; - telecommunications; - vehicle engineering; - transportation engineering; - lighting control. Where the component is intended to be incorporated into the equipment by the final user without EMC knowledge, an assessment for EMC compliance is available. There are no EMC requirements for solid state relays intended for incorporation into the equipment by the equipment manufacturer, because the performance strongly depends on the application into the equipment. Solid-state switching devices with monolithic structures fall within the scope of IEC sub195 committee 47E and are not covered in this document. Semiconductor controllers and contactors fall within the scope of the IEC 60947 series of standards - Low-voltage switchgear and controlgear - developed by IEC subcommittee 121A and are not covered in this document. Compliance with the requirements of this document is verified by the type tests and routine tests indicated. The object of this document is to state: - the characteristics of solid-state relays; - the requirements which solid-state relays shall comply with reference to a) their operation and behaviour; b) their 205 dielectric properties; - the tests verifying that the requirements have been met, and the test methods to be adopted; - the information to be given with the solid-state relay or in the manufacturer’s documentation.

IEC 61810-10:2019, with functional and safety aspects, applies to electromechanical elementary relays (non-specified time all-or-nothing relays) with high capability requirements like breaking or short circuit capabilities and similar for incorporation into low-voltage equipment. These relays may have a specific design to extinguish the electric arc between contacts (e.g. by magnetic blow-out), or use an insulation coordination not covered by IEC 61810-1 (e.g. by gas filled contact chambers), or require safety assessments not covered by IEC 61810-1 (e.g. for higher loads). It defines additional requirements for high-capacity relays with generic performance intended for use in applications in smart grids, electric vehicles and other applications where, for example, battery charge/discharge switching is used, such as: • electrical energy storage (EES) systems, • solar photovoltaic energy systems, • electric road vehicles (EV) and electric industrial trucks, • power electronic systems and equipment, • secondary cells and batteries, • road vehicles. Compliance with the requirements of this standard is verified by the type tests indicated.

IEC 62246-1-1:2018 is a blank detail specification which defines requirements and tests for reed switches for use in general and industrial applications. This document is intended to be used in conjunction with IEC 62246-1:2015 and specific products standards applying as switching elements. This document selects from IEC 62246-1:2015 and from other sources the appropriate test procedures to be used in detail specifications derived from this specification. Reed switch types are specified depending on characteristic values including functional ratings for safety and tests. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions: a) update of the scope, references and terms and definitions; b) inclusion of guidelines for the preparation of blank detail and detail specifications; c) update of characteristics values including functional ratings for safety; d) update of the quality conformance inspection procedures; e) update of typical applications.

IEC 61810-4:2020 applies to electromechanical elementary relays with reed switches (reed contacts) incorporated into general control circuits. It defines the basic functional and safety requirements in all areas of electrical engineering or electronics in accordance with the parts of IEC 61810 series and IEC 62246 series. IEC 61810-4:2020 defines technical deviations/additions to IEC 61810-1. It specifies type tests, routine tests, special tests and environmental tests to confirm the service conditions for applications.

IEC 61810-2:2017 covers test conditions and provisions for the evaluation of endurance tests using appropriate statistical methods to obtain reliability characteristics for relays. This document applies to electromechanical elementary relays considered as non-repaired items (i.e. items which are not repaired after failure). This document does not cover procedures for electromechanical elementary relays where enhanced requirements for the verification of reliability apply. This edition includes the following significant technical changes with respect to the previous edition: - not only graphical but also numerical methods are added; - reduction of number of samples in specified cases; - new subclauses of confidence intervals are added; - the WeiBayes approach is added to facilitate compliance tests (routine test) with lower effort; - annexes have been restructured into an Annex A for data analysis (normative) and Annex B (informative) where various examples of the data analysis are given; - the former Annex C has been incorporated into the modified Annex B; - a new Annex C replaces the old Annex D.

IEC 61810-2-1:2017 specifies reliability test procedures for electromechanical elementary relays when enhanced requirements for the verification of reliability apply. Particular provisions are given for relays incorporated in safety-related control systems of machinery in accordance with IEC 62061 and ISO 13849-1. For such relays, B10 values for dangerous failures (B10D values) are derived from the tests specified in this document. This edition includes the following significant technical changes with respect to the previous edition: - limitation of tests to 10 M cycles in Clause 5; - reduction of required number of test samples to 5 in specified cases; - introduction of WeiBayes analysis for routine test under Clause 4.

2018-04 AJC - IEC published corrigendum.

IEC 61810-3:2015 specifies special requirements and tests for elementary relays with forcibly guided contacts, also known as mechanically linked contacts. These special requirements apply in addition to the general requirements of IEC 61810-1.

IEC 61810-1:2015 applies to electromechanical elementary relays (non-specified time all-or-nothing relays) for incorporation into low voltage equipment (circuits up to 1 000 V alternate current or 1 500 V direct current). It defines the basic functional and safety requirements and safety-related aspects for applications in all areas of electrical engineering or electronics, such as: general industrial equipment, electrical facilities, electrical machines, electrical appliances for household and similar use, information technology and business equipment, building automation equipment, automation equipment, electrical installation equipment, medical equipment, control equipment, telecommunications, vehicles, transportation (e.g. railways). Compliance with the requirements of this standard is verified by the type tests indicated. In case the application of a relay determines additional requirements exceeding those specified in this standard, the relay should be assessed in line with this application in accordance with the relevant IEC standard(s). This fourth edition cancels and replaces the third edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - two main test procedures were introduced: procedure A, reflecting the procedure known from Edition 3 of this standard and procedure B, reflecting the assessment according to North American requirements; - inclusion of dedicated device application tests especially relevant for applications in the North American Market (see Clause D.1); - introduction of testing under single mounting condition; - clarification of insulation requirements after endurance testing; - inclusion of provisions for basic safety requirements; - update of references.

IEC 61811-1:2015 applies to electromechanical telecom elementary relays. Relays according to this standard are provided for the operation in telecommunication applications. However, as electromechanical elementary relays, they are also suitable for particular industrial and other applications. This standard selects from IEC 61810 series and other sources the appropriate methods of test to be used in detail specifications derived from this specification, and contains basic test schedules to be used in the preparation of such specifications in accordance with this standard. Detailed test schedules are contained in the detail specifications. This second edition of IEC 61811-1 cancels and replaces IEC 61811-1 published in 1999, IEC 61811-10 published in 2002, IEC 61811-11 published in 2002, IEC 61811-50 published in 2002, IEC 61811-51 published in 2002, IEC 61811-52 published in 2002, IEC 61811-53 published in 2002, IEC 61811-54 published in 2002, IEC 61811-55 published in 2002, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions: a) to get one document for telecom relays; b) update all relevant references.

IEC 62246-1:2015, which is a generic specification, applies to all types of reed switches including magnetically biased reed switches of assessed quality for use in general and industrial applications. Mercury wetted reed switches are not covered by this standard due to their possible environmental impact. It lists the tests and measurement procedures which may be selected for use in detail specifications for such reed switches. This standard applies to reed switches which are operated by an applied magnetic field; it is not restricted to any particular type of contact load. For elementary relays with reed switches, this standard is recommended to be used together with the standards IEC 61810-1, IEC 61811-1 as applicable. For applications of reed switches, this standard is recommended to be used together with specific product standards. This standard cancels and replaces the second edition of IEC 62246-1 published in 2011. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - inclusion of Introduction; - update of the scope, the terms and definitions, the rated values and the test and measurement procedure; - improvement of dielectric test, electrical endurance tests covering maximum electrical endurance test and overload test; - improvement of Table F.1 for electrical ratings based on classification; - inclusion of new Table G.1 for horsepower ratings based on classification.

IEC 61812-1:2011 applies to time relays for industrial applications (e.g. control, automation, signal and industrial equipment). It also applies to time relays for automatic electrical controls for use in, on, or in association with equipment for residential and similar use. This edition includes the following significant technical changes with respect to the previous edition: - addition of terms and definitions more commonly used by industry; - addition of timing charts to help explain terms and definitions involving a sequence of events; - addition of provisions for residential use.

States the characteristics of solid-state relays; the requirements with respect to their operation and behaviour; their dielectric properties; the degrees of protection provided by their enclosures; the tests verifying that the requirements have been met, and the test methods to be adopted.

Lays down the test and measurement procedures for electromechanical elementary relays. Covers basic considerations which are common to all types of electromechanical elementary relays. Supplementary requirements may be necessitated by specific designs or application.

IEC 63522-13:2024 is used for testing electromechanical elementary relays (electromechanical relays, reed relays, reed contacts, reed switches and technology combinations of these) and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method to simulate impacts of sulfuric atmospheres to relays. The test conditions simulate an artificial situation and allow a performance comparison for usability of the devices under test (DUT) with regard to known and existing switching solutions. The test is a static test without actual operation of the DUT to simulate a worst-case scenario for corrosion, since corrosion increases over time. The corrosion layer can potentially create contact sticking, increase resistance or other undesired effects in the relay. Those aspects can be affected by DUT actuations during the test, which can destroy the corrosion layers or hide relevant long-term effects. In addition to polluted atmospheres, the suitability of the DUT for use and/or storage in corrosive atmospheres can be assessed in a salt-laden atmosphere as described in IEC 63522-44.

IEC 63522-15:2024 is used for testing electromechanical elementary relays (electromechanical relays, reed relays, reed contacts, reed switches and technology combination of these) and evaluates their ability to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method that applies defined loads to relay terminals (direct axial pulls, bending or twisting) as they can be present in assembled configurations or during handling. In addition, it covers torque stress for nuts and threaded terminals as they are likely to be experienced during normal assembly operations.

IEC 63522-17:2024 is used for testing electromechanical elementary relays (electromechanical relays, reed relays, reed contacts, reed switches and technology combination of these) and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method to simulate the mechanical stress on relays as it can occur in service, during handling or during transportation. This document comprises test procedures to simulate shock impacts, steady acceleration environments (such as moving vehicles, aircraft and projectiles) as well as vibration conditions.