SIST EN 50156-1:2015
(Main)Electrical equipment for furnaces and ancillary equipment - Part 1: Requirements for application design and installation
Electrical equipment for furnaces and ancillary equipment - Part 1: Requirements for application design and installation
This European Standard applies to the application design and installation of electrical equipment, control
circuits and safety-related systems for furnaces which are operated with solid, liquid or gaseous fuels and
their ancillary equipment. It specifies requirements to meet the operating conditions of furnaces, to reduce
the hazards of combustion and to protect the heated systems from damage e.g. by overheating.
Such furnaces and the electrical equipment may be part by way of example of the following plant:
a) water heating systems;
b) steam boiler installations (steam and hot-water boilers) and heat recovery steam boilers;
NOTE 1 The requirements of this standard apply according to the electrical equipment of electrically heated steam
boilers.
NOTE 2 Seagoing vessels and offshore facilities are governed by International Maritime Law and as such are not
within the scope of this standard. These requirements may be used for such facilities.
c) warm air heaters;
d) hot-gas heaters;
e) heat exchanger systems;
f) combustion chambers of stationary turbines;
g) as long as no other standard is applicable for combined heat and power stations, we recommend the
use of the requirements of this standard;
h) This standard may also be used as reference for electrical equipment requirements for thermoprocessing
equipment.
The requirements in this standard are not applicable to electrical equipment for:
i) non-electrically heated appliances and burner control systems for household and similar purposes;
j) furnaces using technologies for the direct conversion of heat into electrical energy;
k) combustion chambers of non-stationary prime movers and turbines;
l) central oil supply systems for individual heating appliances;
m) furnaces using solid fuels for heating purposes for household use with a nominal thermal output up to
1 MW;
n) furnaces which are used to heat process fluids and gasses in chemical plant.
This European Standard may be used as a basis for the requirements placed on electrical equipment for
furnaces, which are excluded from its field of application.
Elektrische Ausrüstung von Feuerungsanlagen und zugehörige Einrichtungen - Teil 1: Bestimmungen für die Anwendungsplanung und Errichtung
Equipements électriques d'installation de chaudière - Partie 1: Règles pour la conception, pour l'application et l'installation
Električna oprema za peči in pomožno opremo - 1. del: Zahteve za zasnovo in vgradnjo
Ta evropski standard se uporablja za zasnovo in vgradnjo električne opreme, krmilnih tokokrogov in z varnostjo povezanih sistemov za peči, ki delujejo na trdna, tekoča ali plinasta goriva, ter njihove pomožne opreme. Določa zahteve za izpolnjevanje operativnih pogojev peči, zmanjšanje nevarnosti zgorevanja in varovanje gretih sistemov pred poškodbami, npr. zaradi pregrevanja.
Take peči in električna oprema so lahko del naslednjih obratov:
a) sistemov za gretje vode;
b) naprav s parnim kotlom (parni in toplovodni kotli) ter parnih kotlov z vračanjem toplote;
OPOMBA 1: Zahteve tega standarda se uporabljajo v skladu z električno opremo električno ogrevanih parnih kotlov.
OPOMBA 2: Pomorska plovila in opremo na odprtem morju ureja mednarodno pomorsko pravo, kot taka pa so zunaj področja uporabe tega standarda. Te zahteve se lahko uporabljajo za tako opremo.
c) grelnikov zraka;
d) plinskih grelnikov;
e) sistemov toplotnih prenosnikov;
f) zgorevalnikov nepremičnih turbin;
g) dokler se za postaje za soproizvodnjo toplote in električne energije ne uporabljajo drugi standardi, priporočamo uporabo zahtev v okviru tega standarda;
h) ta standard se lahko uporablja tudi kot sklicevanje za zahteve glede električne opreme za termopredelovalno opremo.
Zahteve v tem standardu se ne uporabljajo za električno opremo za:
i) neelektrično segrevane aparate ter sisteme s samodejnim nadzorom gorilnikov za gospodinjske in podobne namene;
j) peči, ki uporabljajo tehnologije za neposredno pretvorbo toplote v električno energijo;
k) zgorevalnike premičnih lokomotiv in turbin;
l) centralne sisteme za dobavo olja za posamezne ogrevalne naprave;
m) peči, ki uporabljajo trdna goriva za ogrevanje za gospodinjsko uporabo z nazivnim toplotnim izhodom do 1 MW;
n) peči, ki se uporabljajo za segrevanje procesnih tekočin in plinov v kemičnem obratu.
Ta evropski standard se lahko uporablja kot podlaga za zahteve glede električne opreme za peči, ki so zunaj njegovega polja uporabe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2015
1DGRPHãþD
SIST EN 50156-1:2006
(OHNWULþQDRSUHPD]DSHþLLQSRPRåQRRSUHPRGHO =DKWHYH]D]DVQRYRLQ
YJUDGQMR
Electrical equipment for furnaces and ancillary equipment - Part 1: Requirements for
application design and installation
Elektrische Ausrüstung von Feuerungsanlagen und zugehörige Einrichtungen - Teil 1:
Bestimmungen für die Anwendungsplanung und Errichtung
Equipements électriques d'installation de chaudière - Partie 1: Règles pour la
conception, pour l'application et l'installation
Ta slovenski standard je istoveten z: EN 50156-1:2015
ICS:
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50156-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2015
ICS 27.060.01 Supersedes EN 50156-1:2004
English Version
Electrical equipment for furnaces and ancillary equipment - Part
1: Requirements for application design and installation
Equipements électriques d'installation de chaudière - Partie Elektrische Ausrüstung von Feuerungsanlagen und
1: Règles pour la conception, pour l'application et zugehörige Einrichtungen - Teil 1: Bestimmungen für die
l'installation Anwendungsplanung und Errichtung
This European Standard was approved by CENELEC on 2015-01-26. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50156-1:2015 E
Contents
European foreword . 6
Introduction . 7
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 11
4 General requirements . 19
4.1 General considerations . 19
4.2 Environmental requirements . 20
4.2.1 General . 20
4.2.2 Environmental and operating conditions . 20
4.2.3 Electromagnetic compatibility . 20
4.2.4 Ambient temperature . 21
4.2.5 Humidity . 21
4.2.6 Contamination . 22
4.2.7 Vibration and shock. 22
4.2.8 Equipment used in flammable atmospheres . 22
4.3 Power supply . 22
4.3.1 General . 22
4.3.2 Power stations . 22
5 Incoming supply connections and devices for disconnecting and emergency stop . 22
5.1 Incoming supply and equipment connections . 22
5.1.1 Types of connection . 22
5.1.2 Terminations . 23
5.2 Devices for disconnecting power supplies . 24
5.2.1 General . 24
5.2.2 Disconnecting switch . 25
5.2.3 Excluded circuits . 25
5.3 Emergency stop . 26
5.3.1 General . 26
5.3.2 Emergency stop device for furnaces in heating installations . 26
5.3.3 Emergency stop device for other furnaces, e.g. steam boilers . 26
5.3.4 Application as isolating switch . 26
6 Protection against electric shock . 26
6.1 Protection against direct contact . 26
6.2 Protection against indirect contact . 27
7 Environmental protection of the equipment. 27
7.1 Protection against ingress of solid foreign bodies. 27
7.2 Protection against water . 27
8 Equipotential bonding . 27
8.1 General . 27
8.2 Equipotential bonding as a protective measure in case of indirect contact . 27
8.3 Equipotential bonding for the purpose of lightning protection . 28
8.4 Functional equipotential bonding . 28
9 Auxiliary circuits . 29
9.1 Supply to auxiliary circuits . 29
9.1.1 Supply from 3-phase or a.c. systems . 29
9.1.2 Supply from d.c. mains . 29
9.1.3 Auxiliary circuits connected between the line conductors . 30
9.2 Voltage for auxiliary circuits . 30
9.2.1 Operating voltage of auxiliary circuits . 30
9.2.2 Preferred nominal voltages . 30
9.3 Connection to the protective conductor . 30
9.4 Overcurrent protection of auxiliary circuits . 30
9.4.1 Rating of overcurrent protective devices . 30
9.4.2 Overcurrent protection of auxiliary circuits connected to the protective
conductor . 31
9.4.3 Overcurrent protection of auxiliary circuit with the middle conductor
connected to the protective conductor . 31
9.4.4 Overcurrent protection of auxiliary circuits with no electrical connection to
the protective conductor . 31
9.4.5 Overcurrent protection of control system supply transformers . 31
9.4.6 Rating and setting of overcurrent protection . 31
9.5 Measures to prevent danger from short circuits to exposed conductive parts or
earth . 31
9.6 Influence of capacitance and leakage resistance . 32
10 Additional requirements for the application of a safety-related system . 32
10.1 General safety requirements . 32
10.1.1 Safety lifecycle requirements for a safety-related system . 32
10.1.2 Planning . 34
10.2 Concept and scope definition . 37
10.3 Hazard and risk analysis . 38
10.4 Safety requirements allocation . 39
10.5 Design . 40
10.5.1 General requirements. 40
10.5.2 Design of the safety-related system . 41
10.5.3 Measures to avoid faults . 46
10.5.4 Consideration of times . 47
10.5.5 Hardware design . 47
10.5.6 Plant specific application software. 52
10.6 Installation and commissioning . 55
10.7 Safety validation . 55
10.7.1 System integration of hardware and software . 55
10.7.2 Fault assessment for the system integration of hardware and software . 56
10.7.3 Type approval . 57
10.7.4 Plant-specific test . 57
10.8 Operation and maintenance . 57
10.9 Modification and retrofit . 58
10.9.1 General . 58
10.9.2 Measures against unauthorised changes or overriding . 58
11 Electrical equipment . 59
11.1 General requirements . 59
11.2 Creepage distances and clearances . 59
11.3 Motors . 59
11.4 Transformers . 59
11.5 Switching devices . 60
11.6 Operator control devices . 60
11.7 Immersion electrodes . 60
11.8 Trace heating systems . 60
12 Cables and cords . 60
12.1 General requirements . 60
12.2 Insulation . 61
12.3 Current-carrying capacity .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.