29.120.70 - Relays
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- Corrigendum4 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61812-1:2023 is available as IEC 61812-1:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61812-1:2023 applies to time relays and coupling relays for industrial applications (for example 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 time relays and coupling relays, other than measuring relays. This document defines type test and routine test to confirm the service condition. Subclause 3.2 provides definitions for different types of time relays in use in the IEC 61812 series. IEC 61812-1:2023 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:
a) update of references;
b) addition of requirements for risk assessment;
c) addition of requirements for routine test;
d) renumbering of clauses to bring them into a more logical order;
e) clarification of the requirement for shock;
f) addition of cybersecurity requirements for industrial automation and control systems;
g) addition of environmentally conscious design requirement;
h) addition of common data dictionary reference;
i) addition of terms and definitions of relay types;
j) addition of coupling relays in title;
k) addition of coupling relays in scope.
- Standard206 pagesEnglish languagesale 15% off
- Standard133 pagesEnglish and French languagesale 15% off
- Corrigendum4 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard4 pagesEnglish and French languagesale 15% off
IEC 60255-1:2022 specifies common rules and requirements applicable to measuring relays and protection equipment, including any combination of equipment to form a distributed protection scheme for power system protection such as control, monitoring and process interface equipment, to obtain uniformity of requirements and tests. This document covers the main technologies in use today; other emerging technologies present specific EMC and safety issues but the philosophy in this document will be applied.
This second edition cancels and replaces the first edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition:
a. scope of document clarified;
b. merging units and communications as an integral part of the protection added;
c. binary output clarification expanded;
d. environmental operating conditions added (Annex B);
e. test reference conditions added;
f. multiple changes to improve understanding across most clauses;
g. derating by manufacturer added;
h. safety and EMC tests removed from document and referenced only;
i. relay setting and type test guidelines modified (Annex A)
j. battery monitor port and low power instrument transformers added.
- Standard49 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard75 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard75 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard138 pagesEnglish and French languagesale 15% off
IEC 60255-27:2023 specifies the product safety requirements for measuring relays and protection equipment having a rated AC voltage up to 1 000 V, or a rated DC voltage up to 1 500 V. This document specifies essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user and property. This document specifies only product safety requirements; functional performance of the equipment is not covered. This document covers all the ways in which the equipment can be mounted and used in cabinets, racks and panels. This document also applies to auxiliary devices such as shunts, series resistors, transformers, auxiliary control panels, display devices, etc., that are used in conjunction with measuring relays and protection equipment and are tested together.
- Standard338 pagesEnglish languagesale 15% off
- Standard214 pagesEnglish and French languagesale 15% off
- Standard2 pagesEnglish languagesale 15% off
IEC 60255-1:2022 specifies common rules and requirements applicable to measuring relays and protection equipment, including any combination of equipment to form a distributed protection scheme for power system protection such as control, monitoring and process interface equipment, to obtain uniformity of requirements and tests. This document covers the main technologies in use today; other emerging technologies present specific EMC and safety issues but the philosophy in this document will be applied. This second edition cancels and replaces the first edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition: a. scope of document clarified; b. merging units and communications as an integral part of the protection added; c. binary output clarification expanded; d. environmental operating conditions added (Annex B); e. test reference conditions added; f. multiple changes to improve understanding across most clauses; g. derating by manufacturer added; h. safety and EMC tests removed from document and referenced only; i. relay setting and type test guidelines modified (Annex A) j. battery monitor port and low power instrument transformers added.
- Standard49 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60255-26:2023 specifies the requirements for electromagnetic compatibility for measuring relays and protection equipment. It is applicable to measuring relays and protection equipment and combinations of devices to form schemes for power system protection including the control, monitoring, communication and process interface equipment used with those systems. This document specifies limits and test methods, for measuring relays and protection equipment in relation to electromagnetic emissions which might cause interference in other equipment. This document specifies the immunity test requirements for measuring relays and protection equipment in relation to continuous and transient, conducted and radiated disturbances, including electrostatic discharges.
- Standard116 pagesEnglish and French languagesale 15% off
- Amendment4 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60255-1:2022 specifies common rules and requirements applicable to measuring relays and protection equipment, including any combination of equipment to form a distributed protection scheme for power system protection such as control, monitoring and process interface equipment, to obtain uniformity of requirements and tests. This document covers the main technologies in use today; other emerging technologies present specific EMC and safety issues but the philosophy in this document will be applied.
This second edition cancels and replaces the first edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition:
a. scope of document clarified;
b. merging units and communications as an integral part of the protection added;
c. binary output clarification expanded;
d. environmental operating conditions added (Annex B);
e. test reference conditions added;
f. multiple changes to improve understanding across most clauses;
g. derating by manufacturer added;
h. safety and EMC tests removed from document and referenced only;
i. relay setting and type test guidelines modified (Annex A)
j. battery monitor port and low power instrument transformers added.
- Standard92 pagesEnglish and French languagesale 15% off
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.
- Standard65 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 62314:2022 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 comply with the relevant product and/or application standard(s) to meet their intended application.
Solid state relay as apparatus:
Where the solid-state relay is specified as apparatus with a function to the end-user, requirements on EMC are given in this document.
Solid state relay as component:
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.
The object of this document is to state:
– the characteristics of solid-state relays
– the requirements which apply to solid-state relays with reference to
a) electrical safety;
b) their operation and behaviour;
c) their dielectric properties;
d) EMC;
– 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 product documentation.
Solid-state switching devices with monolithic structures fall within the scope of IEC sub-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.
IEC 62314:2022 cancels and replaces the first edition published in 2006. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of load categories for DC load;
b) addition of load category for self-ballasted lamp load;
c) addition of "sockets" terminal;
d) update of references;
e) introduction of the requirement of EMC;
f) restructuring of the whole document.
- Standard110 pagesEnglish and French languagesale 15% off
IEC 60255-181:2019 specifies the minimum requirements for functional and performance evaluation of frequency protection. This document also defines how to document and publish performance test results. This document covers the functions based on frequency measurement or rate of change of frequency measurements. This document also covers frequency protection where additional blocking elements are used. This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document.
- Standard93 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60255 specifies the minimum requirements for functional and performance
evaluation of (longitudinal) differential protection designed for the detection of faults in ac
motors, generators and transformers. This document also defines how to document and publish
performance test results.
This document covers the differential protection function whose operating characteristic can be
defined on a bias-differential plane. It includes specification of the protection function,
measurement characteristics, compensation of energizing quantities, additional restraint or
blocking methods (for overexcitation and magnetizing inrush), starting and time delay
characteristics. This document also covers unrestrained differential protection functions
traditionally combined with the restrained (biased) differential element to form a single
differential relay.
This document defines the influencing factors that affect the accuracy under steady state
conditions and performance characteristics during dynamic conditions. The test methodologies
for verifying performance characteristics and accuracy are also included in this document.
This document also includes current transformer requirements for the protection functions.
- Standard208 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard208 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60255-187-1:2021 specifies the minimum requirements for functional and performance evaluation of (longitudinal) differential protection designed for the detection of faults in ac motors, generators and transformers. This document also defines how to document and publish performance test results. This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document. This document, together with IEC 60255-187-2 and IEC 60255-187-3, cancels and replaces IEC 60255-13. This document includes the following significant technical changes with respect to IEC 60255-13: a) IEC 60255-13 has been significantly revised to follow the common structure of the functional standards for protection relays (IEC 60255-1xx series). IEC 60255-187-1 has been developed to address the restrained and unrestrained differential protection of motors, generators and transformers. The revisions include detailed description of the functions including the performance specification, testing and documentation requirements.
- Standard208 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard208 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60255-187-1:2021 specifies the minimum requirements for functional and performance evaluation of (longitudinal) differential protection designed for the detection of faults in ac motors, generators and transformers. This document also defines how to document and publish performance test results. This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document.
This document, together with IEC 60255-187-2 and IEC 60255-187-3, cancels and replaces IEC 60255-13. This document includes the following significant technical changes with respect to IEC 60255-13:
a) IEC 60255-13 has been significantly revised to follow the common structure of the functional standards for protection relays (IEC 60255-1xx series). IEC 60255-187-1 has been developed to address the restrained and unrestrained differential protection of motors, generators and transformers. The revisions include detailed description of the functions including the performance specification, testing and documentation requirements.
The contents of the corrigendum of April 2023 have been included in this copy.
- Standard418 pagesEnglish and French languagesale 15% off
- Amendment4 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61810, 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.
- Standard65 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard64 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61810 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.
This document 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.
NOTE The terms reed switch(es) and reed contact(s) are both in use for the description of the contact set in reed
relays.
- Standard32 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard32 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard56 pagesEnglish and French languagesale 15% off
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.
- Standard45 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60050-447:2020 gives the general terminology used in measuring relays and protection equipment, as well as general terms pertaining to specific applications and associated technologies. This new edition reviews and complements the previous one. It has the status of a horizontal standard in accordance with IEC Guide 108:2006. This terminology is consistent with the terminology developed in the other specialized parts of the IEV.
- Standard170 pagesEnglish and French languagesale 15% off
EN-IEC 60255-181 specifies the minimum requirements for functional and performance evaluation of frequency protection. This document also defines how to document and publish performance test results. This document covers the functions based on frequency measurement or rate of change of frequency measurements. This document also covers frequency protection where additional blocking elements are used. This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document. This functional document is applicable to frequency functions embedded in a protection relay but also to other physical devices which include frequency protection in their functionality (for example, trip units in a low-voltage circuit breaker or inverters associated with photovoltaic or storage systems). This document does not cover synchronizing or synchronism-check functions. This document does not specify the functional description of additional features often associated with frequency functions such as undervoltage blocking, df/dt or Δ f/Δ t supervision, current supervision or power supervision (f/P function). Only their influence on the frequency protection function is covered in this document. Frequency and rate of change of frequency measurement outputs provided by protection devices are not in the scope of this document. Additionally, this document does not explicitly cover the frequency relays based on current as the input energizing quantity but the principles covered by this document can be extended to provide guidance for these applications. The general requirements for measuring relays and protection equipment are defined in IEC 60255-1.
- Standard93 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard4 pagesEnglish and French languagesale 15% off
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.
- Standard128 pagesEnglish and French languagesale 15% off
IEC 60255-181:2019 specifies the minimum requirements for functional and performance evaluation of frequency protection. This document also defines how to document and publish performance test results.
This document covers the functions based on frequency measurement or rate of change of frequency measurements. This document also covers frequency protection where additional blocking elements are used.
This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document.
- Standard188 pagesEnglish and French languagesale 15% off
IEC/IEEE 60255-118-1:2018 is used for synchronized phasor measurement systems in power systems. It defines a synchronized phasor (synchrophasor), frequency, and rate of change of frequency measurements. It describes time tag and synchronization requirements for measurement of all three of these quantities. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both static and dynamic conditions. It defines a phasor measurement unit (PMU), which can be a stand-alone physical unit or a functional unit within another physical unit. This document does not specify hardware, software or a method for computing phasors, frequency, or rate of change of frequency.
- Standard74 pagesEnglish languagesale 15% off
2018-04 AJC - IEC published corrigendum.
- Corrigendum3 pagesEnglish and French languagesale 10% offe-Library read for1 day
2018-04 AJC - IEC published corrigendum.
- Corrigendum3 pagesEnglish and French languagesale 10% offe-Library read for1 day
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.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard99 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard57 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard82 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard1 pageEnglish and French languagesale 15% off
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.
- Standard124 pagesEnglish and French languagesale 15% off
This part of IEC 61810 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.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61810 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).
The lifetime of a relay is usually expressed in number of cycles (CTF). Therefore, whenever
the terms “time” or “duration” are used in IEC 61649, they carry the meaning “cycles”.
However, with a given frequency of operation, the number of cycles can be transformed into
respective times (e.g. times to failure (TTF)).
The failure criteria and the resulting characteristics of elementary relays describing their
reliability in normal use are specified in this document. A relay failure occurs when the
specified failure criteria are met.
As the failure rate for elementary relays cannot be considered as constant, particularly due to
wear-out mechanisms, the cycles to failure of tested items typically show a Weibull
distribution. This document provides numerical and graphical methods to calculate
approximate values for the two-parameter Weibull distribution, as well as lower confidence
limits and a method for confirmation of reliability values with the WeiBayes method.
This document does not cover procedures for electromechanical elementary relays where
enhanced requirements for the verification of reliability apply.
NOTE 1 Such reliability test procedures are specified in IEC 61810-2-1. In particular, when electromechanical
elementary relays are intended to be incorporated in safety-related control systems of machinery in accordance
with IEC 62061 and ISO 13849-1, IEC 61810-2-1 defines procedures for the manufacturer to provide B10D values.
NOTE 2 Electromechanical elementary relays with forcibly guided (mechanically linked) contacts according to
IEC 61810-3 offer the possibility of a high diagnostic coverage according to 4.5.3 of ISO 13849-1:2015.
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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.
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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.
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IEC 60255-121:2014 specifies minimum requirements for functional and performance evaluation of distance protection function typically used in, but not limited to, line applications for effectively earthed, three-phase power systems. This standard also defines how to document and publish performance tests. This standard covers distance protection function whose operating characteristic can be defined on an impedance plane and includes specification of the protection function, measurement characteristics, phase selection, directionality, starting and time delay characteristics. The test methodologies for verifying performance characteristics and accuracy are included in this standard. The standard defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. It also includes the instrument transformer requirements for the protection function. The general requirements for measuring relays and protection equipment are defined in IEC 60255-1.
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