SIST EN 61811-1:2015/kprA1:2025
(Amendment)Amendment 1 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
Amendment 1 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
Elektromechanische Telekom-Elementarrelais mit bewerteter Qualität - Teil 1: Fachgrundspezifikation und Bauartspezifikation
Amendement 1 - Relais télécom électromagnétiques élémentaires soumis au régime d'assurance qualité - Partie 1: Spécification générique et spécification particulière cadre
Elektromehanski telekomunikacijski stikalni releji ocenjene kakovosti - 1. del: Rodovna specifikacija in okvirna podrobna specifikacija - Dopolnilo A1
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-May-2025
- Technical Committee
- ISS EIT.ERE - All-or-nothing electrical relays
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 13-Oct-2025
- Due Date
- 01-Dec-2025
- Completion Date
- 21-Oct-2025
Relations
- Effective Date
- 26-Nov-2024
Overview
EN 61811-1:2015/FprA1:2025 (CLC) is an amendment to the generic specification and blank detail specification for electromechanical telecom elementary relays of assessed quality. This document updates Part 1 of the IEC/EN 61811-1 family, clarifying detail-specification entries and adding test requirements for contact-circuit resistance stability. The amendment (Amendment 1, 2025) was circulated as an IEC Committee Draft for Vote and is intended to align national and European relay quality requirements for telecom applications.
Key Topics
- Scope and purpose
- Generic specification and blank detail specification for electromechanical all-or-nothing telecom relays of assessed quality.
- New detail-specification entry
- Addition of item 39 in Annex C, subgroup C6: contact‑circuit resistance stability (referenced to Subclause 4.12).
- Test conditions and measurement parameters (as provided in the amendment text)
- Coil voltage: rated voltage
- Measurement during successive cycles (reference to 100 successive cycles)
- Number of cycles per second: up to 10 Hz
- Duty factor: 1:1
- Ambient temperature: 23 °C
- Statistical evaluation: mean value and standard deviation of contact resistance calculated for each contact
- Detail-specification table updates
- Table C.3 (Group 19) is amended to reference the new item (39 C6) for contact-circuit resistance stability.
Applications
This amendment and the underlying standard are directly relevant to:
- Telecom equipment manufacturers specifying or qualifying electromechanical relays for switching functions.
- Relay designers and component engineers defining performance and reliability criteria.
- Test laboratories and QA teams implementing contact-resistance stability tests and statistical acceptance criteria.
- Procurement and compliance specialists creating vendor detail specifications and verifying assessed-quality relays for telecom networks.
Practical value includes harmonized test procedures, clearer detail-specification entries for supplier contracts, and measurable acceptance criteria (mean and standard deviation of contact resistance) for reliability assessments.
Related Standards
- IEC 61811-1 Edition 2.0 (2015) - Part 1: Generic specification and blank detail specification (base document)
- EN 61811-1:2015 - European adoption of IEC 61811-1
- This document: EN 61811-1:2015/FprA1:2025 (Amendment 1 / CLC adoption)
Keywords: electromechanical telecom relays, assessed quality, EN 61811-1, IEC 61811-1, contact-circuit resistance stability, relay test, blank detail specification, telecom relay standard.
Frequently Asked Questions
SIST EN 61811-1:2015/kprA1:2025 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Amendment 1 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification". This standard covers: Amendment 1 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
Amendment 1 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
SIST EN 61811-1:2015/kprA1:2025 is classified under the following ICS (International Classification for Standards) categories: 29.120.70 - Relays. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 61811-1:2015/kprA1:2025 has the following relationships with other standards: It is inter standard links to SIST EN 61811-1:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 61811-1:2015/kprA1:2025 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61811-1:2015/oprA1:2025
01-maj-2025
Elektromehanski telekomunikacijski stikalni releji ocenjene kakovosti - 1. del:
Rodovna specifikacija in okvirna podrobna specifikacija - Dopolnilo A1
Electromechanical all-or-nothing telecom relays of assessed quality - Part 1: Generic
specification and blank detail specification
Elektromechanische Telekom-Elementarrelais mit bewerteter Qualität - Teil 1:
Fachgrundspezifikation und Bauartspezifikation
Amendement 1 - Relais télécom électromagnétiques élémentaires soumis au régime
d'assurance qualité - Partie 1: Spécification générique et spécification particulière
cadre
Ta slovenski standard je istoveten z: EN 61811-1:2015/prA1:2025
ICS:
29.120.70 Releji Relays
SIST EN 61811-1:2015/oprA1:2025 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 61811-1:2015/oprA1:2025
SIST EN 61811-1:2015/oprA1:2025
94/1137/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61811-1/AMD1 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-03-21 2025-06-13
SUPERSEDES DOCUMENTS:
94/1096/RR
IEC TC 94 : ELECTRICAL RELAYS
SECRETARIAT: SECRETARY:
Austria Mr Bernhard Spalt
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to prov
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...