EN 125:2022+A1:2024

SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN 125:2022
Naprave za nadzor plamena pri plinskih aparatih - Termoelektrična varovala
(vključno z dopolnilom A1)
Flame supervision devices for gas burning appliances - Thermoelectric flame supervision
devices
Flammenüberwachungseinrichtungen für Gasgeräte - Thermo-elektrische
Zündsicherungen
Dispositifs de surveillance de flamme pour appareils à gaz - Dispositifs
thermoélectriques de surveillance de flamme
Ta slovenski standard je istoveten z: EN 125:2022+A1:2024
ICS:
27.060.20 Plinski gorilniki Gas fuel burners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 125:2022+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 27.060.20
English Version
Flame supervision devices for gas burning appliances -
Thermoelectric flame supervision devices
Dispositifs de surveillance de flamme pour appareils à Flammenüberwachungseinrichtungen für Gasgeräte -
gaz - Dispositifs thermoélectriques de surveillance de Thermo-elektrische Zündsicherungen
flamme
This European Standard was approved by CEN on 8 August 2022 and includes Amendment 1 approved by CEN on 3 July 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 125:2022+A1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Classification . 9
4.1 Classes of control . 9
4.2 Groups of control . 9
4.3 Classes of control functions . 9
4.4 Types of DC supplied controls . 9
5 Test conditions and uncertainty of measurements . 9
6 Design and construction . 10
6.1 General . 10
6.2 Mechanical parts of the control . 10
6.2.1 Appearance . 10
6.2.2 Holes . 10
6.2.3 Breather holes . 10
6.2.4 Screwed fastenings . 10
6.2.5 Jointing . 10
6.2.6 Moving parts . 10
6.2.7 Sealing caps . 10
6.2.8 Dismantling and reassembly . 10
6.2.9 Auxiliary canals and orifices . 10
6.2.10 Presetting device . 10
6.3 Materials . 10
6.3.1 General material requirements . 10
6.3.2 Housing . 11
6.3.3 Zinc alloys . 11
6.3.4 Springs . 11
6.3.5 Resistance to corrosion and surface protection . 11
6.3.6 Impregnation . 11
6.3.7 Seals for glands for moving parts . 11
6.4 Gas connections . 11
6.4.1 Making connections. 11
6.4.2 Connection sizes . 11
6.4.3 Threads . 11
6.4.4 Union joints . 11
6.4.5 Flanges . 11
6.4.6 Compression fittings . 11
6.4.7 Nipples for pressure test . 11
6.4.8 Strainers . 11
6.5 Electronic parts of the control . 11
6.6 Protection against internal faults for the purpose of functional safety . 12
7 Performance . 12
7.1 General . 12
7.2 Leak-tightness . 12
7.2.1 Requirements . 12
7.2.2 Test . 13
7.3 Torsion and bending . 13
7.4 Rated flow rate . 13
7.4.1 Requirement . 13
7.4.2 Test . 14
7.4.3 Conversion of air flow rate . 14
7.5 Durability. 14
7.6 Performance tests for electronic controls . 14
7.7 Long-term performance for electronic controls . 14
7.8 Data exchange . 14
7.101 Operating torque and force . 14
7.101.1 Requirement . 14
7.101.2 Test for operating torque and force . 15
7.102 Interlocks . 15
7.102.1 Requirement . 15
7.102.2 Test for interlocks . 15
7.103 Closing current . 15
7.103.1 Requirement . 15
7.103.2 Test for closing current . 15
7.104 Sealing force . 16
7.104.1 Requirement . 16
7.104.2 Test for sealing force . 16
7.105 Endurance . 17
7.105.1 Requirement . 17
7.105.2 Endurance test . 17
8 EMC/Electrical requirements .
...