Product standard covering luminous signs with discharge lamps and/or LED (light emitting diodes) and/or EL (electroluminescent) lightsources with a nominal voltage not exceeding 1000 V, with the exclusion of general lighting, traffic- or emergency related purpose

A luminous sign, light-artwork or architectural accent lighting (finished functional sign, abbreviated: sign) shall comply with this product standard.
The finished functional sign as a product fulfilling its intended purpose as luminous sign can be achieved by combining products with similar purpose through installation (according to HD 384/HD 60364 series) in order to yield a new product by itself.
NOTE 1: The scope of this product standard is specified by the areas C,D and E in the figure of Annex A.
NOTE 2: Even if the physical execution of a particular luminous sign might qualify the luminous sign to meet the requirements of a luminaire according to EN 60598, the exclusion of general lighting, traffic and emergency related purpose is intended to avoid the requirements of EN 60598 which are impracticable and/or impossible to fulfil for most luminous signs. To cover the special safety problems related with luminous signs, the present product standard is intended.

Produktnorm für Lichtwerbeanlagen mit Entladungslampen und/oder LED- (lichtemittierende Dioden) und/oder EL- (elektrolumineszierende) Lichtquellen mit einer Nennspannung bis einschließlich 1 000 V, ausgenommen Allgemeinbeleuchtung, Verkehrs- oder Notbeleuchtung

Norme de produit couvrant les enseignes lumineuses avec des lampes à décharge et/ou à LED (diodes électroluminescentes) et/ou les sources lumineuses électroluminescentes (EL) avec une tension nominale ne dépassant pas 1000 V, à l'exclusion de l'éclairage général ainsi que des enseignes relatives à la circulation routière et aux situations d'urgence

Standard za proizvod, ki zajema svetlobne znake z razelektritvenimi sijalkami in/ali diodami LED (svetleče diode) in/ali EL (elektroluminescenčnimi) svetlobnimi viri z nazivno napetostjo, ki ne presega 1000 V, razen splošne, cestne ali zasilne razsvetljave

Svetlobni znak, svetlobna umetnost ali arhitekturna osvetlitev (dokončan funkcionalni znak, skrajšano »znak«) morajo biti skladni s tem standardom za proizvod.
Dokončan funkcionalni znak kot proizvod, ki izpolnjuje svoj predvideni namen kot svetlobni znak, je mogoče doseči z združitvijo proizvodov s podobnim namenom uporabe prek namestitve (v skladu s skupino standardov HD 384/HD 60364), pri čemer nastane nov proizvod.
OPOMBA 1: Področje uporabe tega standarda za proizvod je določeno s polji C, D in E na sliki v dodatku A.
OPOMBA 2: Čeprav fizična izdelava določenega svetlobnega znaka lahko pomeni, da svetlobni znak izpolnjuje zahteve svetilke v skladu s standardom EN 60598, je izključenost splošne, cestne ali zasilne razsvetljave namenjena neupoštevanju zahtev iz standarda EN 60598, ki za večino svetlobnih znakov niso praktične in/ali jih ti ne morejo izpolniti. Ta standard za proizvod je namenjen obravnavi posebnih težav, povezanih s svetlobnimi znaki.

General Information

Status
Published
Public Enquiry End Date
28-Jul-2016
Publication Date
04-Sep-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Aug-2018
Due Date
13-Oct-2018
Completion Date
05-Sep-2018

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SLOVENSKI STANDARD
SIST EN 50107-3:2018
01-oktober-2018

6WDQGDUG]DSURL]YRGNL]DMHPDVYHWOREQH]QDNH]UD]HOHNWULWYHQLPLVLMDONDPLLQDOL

GLRGDPL/(' VYHWOHþHGLRGH LQDOL(/ HOHNWUROXPLQHVFHQþQLPL VYHWOREQLPLYLUL]

QD]LYQRQDSHWRVWMRNLQHSUHVHJD9UD]HQVSORãQHFHVWQHDOL]DVLOQH
UD]VYHWOMDYH
Product standard covering luminous signs with discharge lamps and/or LED (light

emitting diodes) and/or EL (electroluminescent) lightsources with a nominal voltage not

exceeding 1000 V, with the exclusion of general lighting, traffic- or emergency related

purpose
Ta slovenski standard je istoveten z: EN 50107-3:2018
ICS:
29.140.30 )OXRUHVFHQþQHVLMDONH6LMDONH Fluorescent lamps.
Discharge lamps
SIST EN 50107-3:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 50107-3:2018
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SIST EN 50107-3:2018
EUROPEAN STANDARD EN 50107-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 29.140.30
English Version
Product standard covering luminous signs with discharge lamps
and/or LED (light emitting diodes) and/or EL (electroluminescent)
lightsources with a nominal voltage not exceeding 1000 V, with
the exclusion of general lighting, traffic- or emergency related
purpose

Norme de produit couvrant les enseignes lumineuses avec Produktnorm für Lichtwerbeanlagen mit Entladungslampen

des lampes à décharge et/ou à LED (diodes und/oder LED- (lichtemittierende Dioden) und/oder EL-

électroluminescentes) et/ou les sources lumineuses (elektrolumineszierende) Lichtquellen mit einer

électroluminescentes (EL) avec une tension nominale ne Nennspannung bis einschließlich 1 000 V, ausgenommen

dépassant pas 1000 V, à l'exclusion de l'éclairage général Allgemeinbeleuchtung, Verkehrs- oder Notbeleuchtung

ainsi que des enseignes relatives à la circulation routière et
aux situations d'urgence

This European Standard was approved by CENELEC on 2017-09-18. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50107-3:2018 E
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
Contents

European foreword .................................................................................................................................. 3

1 Scope .............................................................................................................................................. 4

2 Normative references ...................................................................................................................... 4

3 Terms and definitions ...................................................................................................................... 5

3.1 General .................................................................................................................................... 5

3.2 Light sources ........................................................................................................................... 6

3.3 Controlgear .............................................................................................................................. 8

4 Protection for safety ........................................................................................................................ 9

4.1 Protection against electric shock............................................................................................. 9

4.2 Protection against thermal effects ......................................................................................... 11

4.3 Protection against earth- and short-circuits by means of clearances and creepage distances

12

4.4 Protection against fire for extra-low voltage signs where particular risks or dangers exist .. 13

4.5 External influences - drain holes ........................................................................................... 14

5 Marking .......................................................................................................................................... 14

5.1 General .................................................................................................................................. 14

5.2 Content .................................................................................................................................. 14

6 Documentation .............................................................................................................................. 14

7 Internal wiring / wiring of the product ............................................................................................ 15

7.1 Cables and supports ............................................................................................................. 15

7.2 Selection of cables ................................................................................................................ 15

7.3 Cross-sectional areas of copper conductors ......................................................................... 16

7.4 Electrical connections ........................................................................................................... 17

8 Signs with LED and/or LED modules ............................................................................................ 18

8.1 General .................................................................................................................................. 18

8.2 Signs with constant voltage LED and/or LED modules ........................................................ 18

8.3 Signs with constant current LED ........................................................................................... 18

8.4 Controlgear for LED and/or LED modules ............................................................................ 18

9 Product verification ........................................................................................................................ 18

9.1 Initial verification .................................................................................................................... 18

9.2 Periodic verification ............................................................................................................... 19

Annex A (informative) Definition of applicability ................................................................................... 32

Annex B (normative) Special national conditions ................................................................................. 34

Bibliography .......................................................................................................................................... 35

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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
European foreword

This document (EN 50107-3:2018) has been prepared by CLC/BTTF 142-1 “Product requirements for

signs, artwork and accent lighting using low voltage cold cathode and/or LED”.
The following dates are fixed:
— latest date by which this document has to be (dop) 2019-02-03
implemented at national level by publication of an
identical national standard or by endorsement
— latest date by which the national standards conflicting (dow) 2021-08-03
with this document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
1 Scope

This product standard contains electrical safety requirements for luminous signs, light-artwork or

architectural accent lighting (finished functional sign, abbreviated: sign) using light sources with a

nominal voltage not exceeding 1000 V with the exclusion of general lighting, traffic- or emergency

related purposes.

The finished functional sign as a product fulfilling its intended purpose as luminous sign can be

achieved by combining products with similar purpose through installation (according to HD 384

series/HD 60364) in order to yield a new product by itself.

NOTE 1 The scope of this product standard is specified by the areas C, D and E in the figure of Annex A.

NOTE 2 Even if the physical execution of a particular luminous sign might qualify the luminous sign to meet

the requirements of a luminaire according to EN 60598, the exclusion of general lighting, traffic and emergency

related purpose is intended to avoid the requirements of EN 60598 which are impracticable and/or impossible to

fulfill for most luminous signs. To cover the special safety problems related with luminous signs, the present

product standard is intended.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 50107-1:2002, Signs and luminous-discharge-tube installations operating from a no-load rated

output voltage exceeding 1 kV but not exceeding 10 kV - Part 1: General requirements

EN 50107-2, Signs and luminous-discharge-tube installations operating from a no-load rated output

voltage exceeding 1 kV but not exceeding 10 kV - Part 2: Requirements for earth-leakage and open-

circuit protective devices

EN 60081, Double-capped fluorescent lamps - Performance specifications (IEC 60081)

EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)

EN 60598-2-23, Luminaires - Part 2-23: Particular requirements - Extra low-voltage lighting systems

for filament lamps (IEC 60598-2-23)

EN 60901, Single-capped fluorescent lamps - Performance specifications (IEC 60901)

EN 60921, Ballasts for tubular fluorescent lamps - Performance requirements (IEC 60921)

EN 60929, AC-supplied electronic ballasts for tubular fluorescent lamps – Performance requirements

(IEC 60929)

EN 61050, Transformers for tubular discharge lamps having a no-load output voltage exceeding 1 kV

(generally called neon-transformers) - General and safety requirements (IEC 61050)

EN 61195, Double-capped fluorescent lamps - Safety specifications (IEC 61195)
EN 61199, Single-capped fluorescent lamps - Safety specifications (IEC 61199)

EN 61347-1:2008, Lamp controlgear - Part 1: General and safety requirements (IEC 61347-1:2007)

EN 61347-2-2:2012, Lamp controlgear - Part 2-2: Particular requirements for d.c. or a.c. supplied

electronic step-down convertors for filament lamps (IEC 61347-2-2:2011)
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EN 50107-3:2018 (E)

EN 61347-2-3, Lamp controlgear – Part 2-3: Particular requirements for a.c. supplied electronic

ballasts for fluorescent lamps (IEC 61347-2-3)

EN 61347-2-8, Lamp controlgear - Part 2-8: Particular requirements for ballasts for fluorescent lamps

(IEC 61347-2-8)

EN 61347-2-10:2001, Lamp controlgear - Part 2-10: Particular requirements for electronic invertors

and convertors for high-frequency operation of cold start tubular discharge lamps (neon tubes)

(IEC 61347-2-10:2000)

EN 61347-2-13:2006, Lamp controlgear - Part 2-13: Particular requirements for d.c. or a.c. supplied

electronic controlgear for LED modules (IEC 61347-2-13:2006)

EN 62031:2008, LED modules for general lighting - Safety specifications (IEC 62031:2008)

EN 62384, DC or AC supplied electronic control gear for LED modules - Performance requirements

(IEC 62384)
EN 62532, Fluorescent induction lamps - Safety specifications (IEC 62532)

HD 384/60364 (all parts), Electrical installations of buildings / Low-voltage electrical installations

(IEC 60364, all parts)

IEC 60050-826, International Electrotechnical Vocabulary - Part 826: Electrical installations

EN ISO 7010:2012, Graphical symbols - Safety colours and safety signs - Registered safety signs

(ISO 7010:2011)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-826 (IEV) and the

following apply.
3.1 General
3.1.1
luminous sign

system with light sources which is intended as finished functional sign, light-artworks, and/or

decorative lighting with the exclusion of general lighting, traffic- or emergency related purpose, for

indoor and/or outdoor operation, consisting of a combination of some products with similar purpose

(apparatus, devices and components), through manufacturing or installation in order to yield the

luminous sign as new product by itself

Note 1 to entry: See Annex A as guide to applicability of product and/or installation standard.

3.1.2
architectural accent lighting

fixed or portable lighting unit or installation to enhance elements of the design or the structure of a

immobile construction and not intended for general lighting, signalling or traffic/ emergency purpose

3.1.3
general lighting

substantially uniform lighting of an area without provision for special local requirements

[SOURCE: IEV 845-09-06]
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
3.1.4
no-load rated output voltage

maximum rated voltage between the output terminals(s) of the transformer, inverter, converter, ballast

or power supplies connected to the rated supply voltage at rated frequency, with no load on the output

circuit

Note 1 to entry: For output circuits supplied by transformers, it is the peak value divided by the square root of 2

(see EN 61050).

Note 2 to entry: For inverters or converters with sinusoidal waveform, it is the maximum rated voltage between

the output terminals (see EN 61347–2-10). For other waveforms it is the r.m.s. value or the equivalent value

deduced from the peak value, obtained by mathematical calculation.
[SOURCE: EN 50107-1:2002]
3.1.5
creepage distance

shortest distance along the surface of a solid installation material between two conductive parts

[SOURCE: EN 60664-1:2007, 3.3]
3.1.6
clearance
shortest distance in air between two conductive parts
[SOURCE: EN 60664-1:2007, 3.2]
3.1.7
insulating sleeve

insulation designed to be placed over the exposed output-voltage connections at tube electrodes or

over cable-end insulators
3.1.8
electrical skilled person for luminous signs

person qualified in sign practice who has knowledge and experience in the production, installation,

testing, maintenance of the technologies in use, in the installation of luminous signs and who takes

responsibility for the product and its testing in accordance with the standards
3.1.9
output circuit

part of the device or installation between the output terminals of controlgear including the light

sources and cables
[SOURCE: EN 50107-1:2002, 3.14, mod.]
3.2 Light sources
3.2.1
discharge lamp

device with purpose of generating visible or invisible light by means of recombination/relaxation of

excited or ionized gas atoms as primary process

Note 1 to entry: The process can be a multi-step process involving fluorescence of solid-state materials or gases

as secondary process.
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
3.2.2
electroluminescent light source

device with purpose of generating visible or invisible light by means of recombination/relaxation of

excited atoms within a solid-state body, wherein the excitation is caused by an electric field

Note 1 to entry: An LED is a special form of electroluminescent light source employing two different

semiconductors forming a P-N-junction.
3.2.3
hot-cathode-fluorescent lamp

low-pressure discharge lamp with or without mercury, utilising electrodes operating by thermo-ionic

emission of electrons, and in which most of the light is emitted by one or several layers of phosphors

excited by the ultra-violet radiation from the discharge
[SOURCE: IEV 845-07-26, mod.] (from EN 60081)
3.2.4
luminous-discharge tube
(common: Neon tube, Cold Cathode tube)

tube, or other vessel or device, which is constructed of translucent material, hermetically sealed, and

designed for the emission of light arising from the passage of an electric current through a gas or

vapour contained within it

Note 1 to entry: The tube may be with or without an internal fluorescent coating.

[SOURCE: EN 50107-1:2002, 3.1, mod.]
3.2.5
Light-Emitting Diode (LED)

solid state device embodying a p-n junction, emitting optical radiation when excited by an electric

current
[SOURCE: IEV 845-04-40 and EN 62031:2008, 3.1]
3.2.6
LED module

unit supplied as a light source. In addition to one or more LED it may contain further components, e.g.

optical, mechanical, electrical and electronic, but excluding the controlgear
[SOURCE: EN 62031:2008, 3.2]
3.2.7
induction lamp
assembly of a low pressure discharge vessel and an inductive power coupler
[SOURCE: EN 62532:2011, 1.3.1 mod.]
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
3.3 Controlgear
3.3.1
controlgear

one or more components between the supply and one or more lamps which may serve to transform

the supply voltage, limit the current of the lamp(s) to the required value, provide starting voltage and

preheating current, prevent cold starting, correct power factor or reduce radio interference

Note 1 to entry: This is the most comprehensive description of a device for operating lamps. It can be either

electronic (ECG) or electro-magnetic (copper-iron type).
[SOURCE: EN 61347-1:2008]
3.3.2
transformer

static piece of apparatus with two or more windings which, by electromagnetic induction, transforms a

system of alternating voltage and current into another system of voltage and current usually of

different values and at the same frequency for the purpose of transmitting electrical power

Note 1 to entry: The high output impedance of most transformers designed for luminous discharge tubes allows

the characteristics of transformer and current-limiting components to be combined in one unit.

[SOURCE: IEV 421-01-01]
3.3.3
ballast

unit inserted between the supply and one or more discharge lamps which by means of inductance,

capacitance, or a combination of inductance and capacitance, serves mainly to limit the current of the

lamp(s) to the required value

Note 1 to entry: It may also include means for transforming the supply voltage and arrangements which help

provide starting voltage and pre-heating current (from EN 61347–1:2008). This definition concerns electro-

magnetic (copper-iron) types. The expression, however, is often used colloquially for any type).

3.3.4
converter

unit for electronic conversion of an s.c. supply at one frequency to an a.c. supply of another frequency

Note 1 to entry: The voltage may or may not be altered during the conversion.
[SOURCE: EN 61347-2-10:2001, 3.4]
3.3.5
inverter
electric energy transducer that converts direct current to alternating current
[SOURCE: EN 61347-2-10:2001, 3.3]
3.3.6
electronic step down converter

unit inserted between the supply and one or more incandescent lamps, which serves to supply the

lamp(s) with its (their) rated voltage, generally at high frequency. The unit may consist of one or more

separate components and may include means for dimming, correcting the power factor and

suppressing radio interference
[SOURCE: EN 61347-2-2:2012]
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
3.3.7
electronic controlgear for LED modules

unit inserted between the supply and one or more LED modules which serves to supply the LED

module(s) with their rated voltage or rated current. The unit may consist of one or more separate

components and may include means for dimming, correcting the power factor and suppressing radio

interference
[SOURCE: EN 61347-2-13:2006, 3.1]
3.3.8
earth-leakage protective device

device which will remove the output power from one or more transformer(s), inverter(s) or converter(s)

in the event of a leakage current or a short circuit between any relevant part of the output circuit and

earth
[SOURCE: EN 50107-1:2002, 3.10, mod.]
3.3.9
flasher

device for automatically switching one or more output circuits on and off continuously

Note 1 to entry: The sequence of switching of the various output circuits may be suitably arranged to provide the

impression of movement and other animated effects.
[SOURCE: EN 50107-1:2002, 3.20, mod.]
3.3.10
dimmer
device in the electric circuit for varying the luminous flux from light sources
[SOURCE: IEV 845-08-37, mod. ”light-sources” instead of “lamps“]
4 Protection for safety
4.1 Protection against electric shock
4.1.1 Provisions for basic protection (protection against direct contact)
4.1.1.1 Barriers or enclosures

Protection is required and shall consist of an enclosure or other means of protection conforming to the following:

a) It shall provide a degree of protection corresponding to at least IP2X for signs to be used in dry

rooms; otherwise at least IP22, as specified in EN 60529:1991, Table I.

NOTE 1: The requirements for protection against ingress of solid objects, specified in EN 60529:1991,

Table II, do not apply.

b) If it is constructed from metal parts, these shall not be used as conductor and shall be earthed.

NOTE 2: National regulations might require installation of an Residual Current Detector safety device (RCD)

in the mains supply.

c) If it is constructed from other materials, these shall be materials that have been certified by the

supplier as suitable for use in the environment existing close to the lamp in use. The sign

manufacturer shall obtain from the supplier a guarantee for the materials covering the expected

lifetime of the product.
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)

NOTE 3: The sign manufacturer is advised to check the temperatures of the lamp(s) and other devices in

operation (i.e. control gear, ballast, transformer etc.) that the ignition temperature of the construction

materials in close proximity is not reached or exceeded.

d) Access to the interior of an enclosure shall be by means of a tool, e.g. a screwdriver.

NOTE 4: A fully enclosed sign letter or box sign is considered to be a suitable enclosure for this purpose.

4.1.1.2 Additional requirement - electrode connections of discharge tubes

In the case of an illuminated sign with discharge tubes, the connections of the electrodes shall be

covered with insulating sleeves, or heat shrinkable tubes or a combination of these.

Insulating sleeves or shrinkable tubes shall be made of a suitable insulating material having a

breakdown voltage certified by the supplier as not less than twice the no-load output voltage to earth

of the transformer, inverter or converter supplying the circuit. The insulating material shall have a wall

thickness corresponding to the required disruptive discharge strength and be resistant to an operating

temperature of at least 180 °C and suitable for the environmental conditions prevailing at the

installation site, e.g. resistant to UV radiation and ozone.

NOTE 1: This requirement is intended to prevent a person from touching a live electrode with a test probe, should

the discharge tube be broken.

NOTE 2: Figures 1 and 2 show the cross-sections of different letter and sign boxes.

NOTE 3: Other means of additional protection may be permanent, e.g. it may have to be cut away.

NOTE 4: See Figures 1 to 3, 9 and 10.
4.1.2 Protection against indirect contact
4.1.2.1 Equi-potential bonding

The protection against indirect contact shall be provided by equi-potential bonding, applied between

all metal parts and then connected to earth.
4.1.2.2 Bonding by protective conductor

All exposed metalwork, with the exception of clips and clamps for fixing cables and tubes, shall be

bonded together by means of a protective conductor and, unless this metalwork is connected to earth

by other means, shall be provided with an earthing terminal.
4.1.2.3 Protective conductors
The protective conductor shall be one of the following:

a) a separate cable having insulation coloured yellow/green and having the following cross-sectional

area:
i) in situations where it may suffer mechanical stress, 4 mm ;
ii) in other situations, 2,5 mm
4.1.2.4 Joints

Where metal parts are joined together, means shall be employed to ensure that earth continuity is

maintained across the joint.

NOTE: This is particularly important where the metal parts are painted or where they are joined together by

adhesive. The paint or adhesive can electrically insulate the parts and it is important that this insulation is by-

passed.
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
4.1.2.5 Connection to Neutral

Equipotential bonding conductors shall be not connected to the neutral terminal of the mains supply to

the luminous sign, except as specified in HD 384 for protective multiple earthing arrangements in TN-

C systems.
4.2 Protection against thermal effects
4.2.1 General

Suppliers of components and enclosure materials should be informed of the temperature, ultraviolet

(UV) radiation, ozone and other conditions existing near a tube electrode, LED-modules or any type of

lamps. They should also be informed that all materials inside of the enclosure might be used in

exterior situations, requiring a minimum range of Ta with −25°C < Ta < 65° C.
4.2.2 Transformers for luminous discharge tubes
4.2.2.1 General

Transformers for luminous-discharge tube circuits with a no-load rated output voltage up to 1 000 V

and produced in accordance with EN 61050 shall be installed.

NOTE: Although EN 61050 is applicable only for transformers with output voltage over 1 kV, it is assumed

that the requirements within EN 61050 are extended also for output voltage equal or below 1 kV.

4.2.2.2 Earth-leakage protection

All luminous-discharge tubes circuits supplied from transformers shall be protected by an earth

leakage-protective device conforming to EN 50107-2.
4.2.3 Converters and inverters for luminous discharge tubes
4.2.3.1 General

Inverters and converters for luminous-discharge tubes with a no-load rated output voltage up to

1 000 V and produced in accordance with EN 61347-2-10 shall be used.

NOTE: Although EN 61347–2-10 is applicable only for transformers with output voltage over 1 kV, it is

assumed that the requirements within EN 61347–2-10 are extended also for output voltage equal or below 1 kV.

4.2.3.2 Earth-leakage protection

All luminous-discharge tubes circuits supplied from inverters or converters, with the exception of

type A converters as specified in EN 61347-2-10 shall also be protected by an earth-leakage

protective device according to in EN 61347-2-10.
4.2.4 Ballasts for fluorescent lamps
4.2.4.1 Conventional ballasts

Ballast for fluorescent lamps according to EN 60901, EN 60921, EN 61195, EN 61199 and

EN 61347-2-8 shall be used.
4.2.4.2 Electronic ballasts

Electronic ballast for fluorescent lamps according to EN 60901, EN 60929, EN 61195, EN 61199 and

EN 61347-2-3 shall be used.
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SIST EN 50107-3:2018
EN 50107-3:2018 (E)
4.2.5 LED circuit power supplies
4.2.5.1 Conventional transformers

Power supplies for LED circuits shall be either protected on the primary side by the protective device

required in 4.4.3 or short-circuit proof transformers (both inherently and non-inherently proof).

4.2.5.2 Electronic converters

Electronic step down converters for LED circuits shall comply with EN 61347-2-2, and with the

requirements of EN 60598-2-23.

It is recommended that converters marked with the symbol are used. See EN 61347-1:2008,

B.3.2, for the symbol.
4.2.6 Other equipment and light sources
4.2.6.1 General requirements

If the circuit includes a flasher or a dimmer and the device(s) to remove the output power is

incorporated within the housing of the transformer(s), inverter(s) or converter(s), either a protective

switch shall be connected on the main
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