EN 88-3:2022+A1:2024

SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN 88-3:2022
Varnostne in nadzorne naprave za plinske gorilnike in plinske aparate - 3. del:
Regulatorji tlaka in/ali regulatorji pretoka za vstopne tlake do vključno 500 kPa,
elektronski tip (vključno z dopolnilom A1)
Safety and control devices for gas burners and gas burning appliances - Part 3: Pressure
and/or flow rate regulators for inlet pressures up to and including 500 kPa, electronic
types
Sicherheits- und Regeleinrichtungen für Gasbrenner und Gasgeräte - Teil 3: Druck-
und/oder Durchflussregler für Eingangsdrücke bis einschließlich 500 kPa, elektronische
Ausführung
Dispositifs de sécurité et de contrôle pour les brûleurs à gaz et appareils utilisant des
combustibles gazeux - Partie 3 : Régulateurs de pression et/ou de débit de type
électronique pour pression amont inférieure ou égale à 500 kPa
Ta slovenski standard je istoveten z: EN 88-3:2022+A1:2024
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
27.060.20 Plinski gorilniki Gas fuel burners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 88-3:2022+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 23.060.40
English Version
Safety and control devices for gas burners and gas burning
appliances - Part 3: Pressure and/or flow rate regulators
for inlet pressures up to and including 500 kPa, electronic
types
Dispositifs de sécurité et de contrôle pour les brûleurs Sicherheits- und Regeleinrichtungen für Gasbrenner
à gaz et appareils utilisant des combustibles gazeux - und Gasgeräte - Teil 3: Druck- und/oder
Partie 3 : Régulateurs de pression et/ou de débit de Durchflussregler für Eingangsdrücke bis einschließlich
type électronique pour pression amont inférieure ou 500 kPa, elektronische Ausführung
égale à 500 kPa
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 88-3:2022+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 . 9
4 Classification . 14
4.1 Classes of control . 14
4.2 Groups of control . 14
4.3 Classes of control functions . 14
4.4 Types of DC supplied controls . 14
5 Test conditions and uncertainty of measurements . 15
6 Design and construction . 15
6.1 General . 15
6.2 Mechanical parts of the control . 15
6.2.1 Appearance . 15
6.2.2 Holes . 15
6.2.3 Breather holes . 15
6.2.4 Screwed fastenings . 16
6.2.5 Jointing . 16
6.2.6 Moving parts . 16
6.2.7 Sealing caps . 16
6.2.8 Dismantling and reassembly . 16
6.2.9 Auxiliary canals and orifices . 16
6.2.10 Presetting device . 16
6.2.101 Resistance to pressure . 16
6.2.102 Signal tube connections . 16
6.3 Materials . 17
6.3.1 General material requirements . 17
6.3.2 Housing . 17
6.3.3 Zinc alloys . 17
6.3.4 Springs . 17
6.3.5 Resistance to corrosion and surface protection . 17
6.3.6 Impregnation . 17
6.3.7 Seals for glands for moving parts . 17
6.4 Gas connections . 17
6.4.1 Making connections. 17
6.4.2 Connection sizes . 17
6.4.3 Threads . 17
6.4.4 Union joints . 17
6.4.5 Flanges . 17
6.4.6 Compression fittings . 18
6.4.7 Nipples for pressure test . 18
6.4.8 Strainers . 18
6.5 Electrical parts of the control . 18
6.5.1 General . 18
6.5.2 Switching elements . 18
6.5.3 Electrical components . 18
6.6 Protection against internal faults for the purpose of functional safety . 18
6.6.1 Design and construction requirements . 18
6.6.2 Class A . 18
6.6.3 Class B . 18
6.6.4 Class C . 18
6.6.5 Circuit and construction evaluation . 18
7 Performance . 19
7.1 General . 19
7.2 Leak-tightness . 19
7.2.1 Requirements . 19
7.2.2 Tests . 19
7.3 Torsion and bending . 20
7.3.1 General . 20
7.3.2 Torsion and bending moments . 20
7.4 Rated flow rate . 20
7.4.1 Requirement . 20
7.4.2 Test . 20
7.4.3 Conversion of air flow rate . 21
7.5 Durability. 21
7.6 Performance tests for electronic controls . 21
7.7 Long-term performance for electronic controls .
...