SIST EN 116203:2002
(Main)Blank Detail Specification: Electromechanical all-or-nothing relays for enhanced industrial application
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- 30-Jun-2002
- 12-May-2014
- 29.120.70
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Blank Detail Specification: Electromechanical all-or-nothing relays for enhanced industrial application
D147/C075: Obsolete standard withdrawn with immediate effect
Vordruck für Bauartspezifikation: Elektromechanische Schaltrelais für industrielle Anwendungen mit erhöhten Anforderungen
Spécification particulière cadre: A présent, cette spécification n'existe pas en français
Blank Detail Specification: Electromechanical all-or-nothing relays for enhanced industrial application
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Blank Detail Specification: Electromechanical all-or-nothing relays for enhanced industrial applicationVordruck für Bauartspezifikation: Elektromechanische Schaltrelais für industrielle Anwendungen mit erhöhten AnforderungenSpécification particulière cadre: A présent, cette spécification n'existe pas en françaisBlank Detail Specification: Electromechanical all-or-nothing relays for enhanced industrial application29.120.
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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
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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
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• secondary cells and batteries,
• road vehicles.
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This document defines technical deviations/additions to IEC 61810-1. It specifies type tests,
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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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