EN 50107-3:2018

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: Withdrawn
• Publication Date: 02-Aug-2018
• ICS: 29.140.30 - Fluorescent lamps. Discharge lamps
• Technical Committee: CLC/TC 34 - 'Lamps and related equipment
• Drafting Committee: CLC/TC 34 - 'Lamps and related equipment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 14-Apr-2021
• Completion Date: 23-Sep-2025
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN 50107-3:2018 - 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

Relations

• Corrected By: EN 50107-3:2018/AC:2018-10 - 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
• Effective Date: 30-Oct-2018

Standards Content (Sample)

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

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
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
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

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.
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)
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]
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.
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.]
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]
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.
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 ;
2.
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.
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-leaka
...