kSIST FprHD 60364-7-719:2018

Low-voltage installations - Part 7-719: Requirements for special installations or locations - Lighting installations for advertising signs with a rated output voltage not exceeding 1 000 V, which are illuminated by hot-cathode-fluorescent-lamps, luminous-discharge tubes (neon-tubes), inductive discharge lamps, light emitting diodes (LED) and/or LED modules

D135/071 (Benchmark 3): Extension of target date for vote approved by BT to read 2010-11-18

Errichten von Niederspannungsanlagen - Teil 7-719: Anforderungen für Betriebsstätten, Räume und Anlagen besonderer Art - Lichtwerbeanlagen mit einer Bemessungs-Ausgangs-Leerlaufspannung bis 1 000 V, die mit Heißkathoden-Leuchtstofflampen, Leuchtröhren (Neonröhren), Induktions-Entladungslampen, Leuchtdioden (LED) und/oder Leuchtdioden-Modulen aus-, oder beleuchtet sind

Installations électriques à basse tension - Partie 7-719: Exigences pour les installations et emplacements spéciaux - Installations d’éclairage à des fins publicitaire avec tension de sortie à vide assignée ne dépassant pas 1 000 V, étant illuminées avec lampes fluorescentes, tubes lumineux à décharge (néon), lampes d’induction, diodes émettant de la lumière (DEL) et/ou modules DEL

Nizkonapetostne električne inštalacije - 7-719. del: Zahteve za posebne inštalacije ali lokacije - Inštalacije za razsvetljavo oglasnih tabel z naznačeno napetostjo, ki ne presega 1000 V in je izvedena s fluorescenčnimi sijalkami z vročo katodo, svetlečimi razelektritvenimi cevnimi sijalkami (neonskimi cevmi), induktivnimi razelektritvenimi sijalkami, svetlečimi diodami (LED) in/ali moduli svetlečih diod

General Information

• Status: Not Published
• Public Enquiry End Date: 31-Dec-2010
• ICS: 29.140.50 - Lighting installation systems
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: ELI - Electrical and communication installations
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 12-Jan-2023
• Due Date: 17-Jan-2023
• Completion Date: 12-Jan-2023
• Ref Project: FprHD 60364-7-719 - Low-voltage installations - Part 7-719: Requirements for special installations or locations - Lighting installations for advertising signs with a rated output voltage not exceeding 1 000 V, which are illuminated by hot-cathode-fluorescent-lamps, luminous-discharge tubes (neon-tubes), inductive discharge lamps, light emitting diodes (LED) and/or LED modules

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prHD 60364-7-719:2010
01-april-2010
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO=DKWHYH]DSRVHEQHLQãWDODFLMH
DOLORNDFLMH,QãWDODFLMH]DUD]VYHWOMDYRRJODVQLKWDEHO]QD]QDþHQRQDSHWRVWMRNL
QHSUHVHJD9LQMHL]YHGHQDVIOXRUHVFHQþQLPLVLMDONDPL]YURþRNDWRGR
VYHWOHþLPLUD]HOHNWULWYHQLPLFHYQLPLVLMDONDPLQHRQVNLPLFHYPLLQGXNWLYQLPL
UD]HOHNWULWYHQLPLVLMDONDPLVYHWOHþLPLGLRGDPL/('LQDOLPRGXOLVYHWOHþLKGLRG
Low-voltage installations -- Part 7-719: Requirements for special installations or locations
- Lighting installations for advertising signs with a rated output voltage not exceeding 1
000 V, which are illuminated by hot-cathode-fluorescent-lamps, luminous-discharge
tubes (neon-tubes), inductive discharge lamps, light emitting diodes (LED) and/or LED
modules
Errichten von Niederspannungsanlagen -- Teil 7-719: Anforderungen für Betriebsstätten,
Räume und Anlagen besonderer Art - Lichtwerbeanlagen mit einer Bemessungs-
Ausgangs-Leerlaufspannung bis 1 000 V, die mit Heißkathoden-Leuchtstofflampen,
Leuchtröhren (Neonröhren), Induktions-Entladungslampen, Leuchtdioden (LED)
und/oder Leuchtdioden-Modulen aus-, oder beleuchtet sind
Ta slovenski standard je istoveten z: prHD 60364-7-719:2010
ICS:
29.140.50 Instalacijski sistemi za Lighting installation systems
razsvetljavo
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
oSIST prHD 60364-7-719:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prHD 60364-7-719:2010

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oSIST prHD 60364-7-719:2010
 DRAFT
HARMONIZATION DOCUMENT
prHD 60364-7-719

DOCUMENT D'HARMONISATION
February 2010
HARMONISIERUNGSDOKUMENT

ICS 91.140.50


English version


Low-voltage installations -
Part 7-719: Requirements for special installations or locations -
Lighting installations for advertising signs with a rated output voltage
not exceeding 1 000 V, which are illuminated by hot-cathode-fluorescent-lamps,
luminous-discharge tubes (neon-tubes), inductive discharge lamps,
light emitting diodes (LED) and/or LED modules



Installations électriques à basse tension - Errichten von Niederspannungsanlagen -
Partie 7-719: Exigences pour les installations et Teil 7-719: Anforderungen für Betriebsstätten,
emplacements spéciaux - Räume und Anlagen besonderer Art -
Installations d’éclairage à des fins publicitaire avec Lichtwerbeanlagen mit einer Bemessungs-
tension de sortie à vide assignée ne dépassant Ausgangs-Leerlaufspannung bis 1 000 V, die mit
pas 1 000 V, étant illuminées avec lampes Heißkathoden-Leuchtstofflampen, Leuchtröhren
fluorescentes, tubes lumineux à décharge (néon), (Neonröhren), Induktions-Entladungslampen,
lampes d’induction, diodes émettant de la lumière Leuchtdioden (LED) und/oder Leuchtdioden-
(DEL) et/ou modules DEL Modulen aus-, oder beleuchtet sind



This draft Harmonization Document is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2010-07-16.

It has been drawn up by CENELEC TC 64.

If this draft becomes a Harmonization Document, CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization
Document on a national level.

This draft Harmonization Document was established by CENELEC in three official versions (English, French,
German).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.

Warning : This document is not a Harmonization Document. It is distributed for review and comments. It is
subject to change without notice and shall not be referred to as a Harmonization Document.


CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Project: 21733 Ref. No. prHD 60364-7-719:2010 E

Draft for Enquiry

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oSIST prHD 60364-7-719:2010
prHD 60364-7-719:2010 – 2 –
1 Foreword
2 This draft Harmonization Document was prepared by the Technical Committee CENELEC TC 64, Electrical
3 installations and protection against electric shock, based on BT/DE0246/NOT. It is submitted to CENELEC
4 enquiry.
5 __________
Draft for Enquiry

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oSIST prHD 60364-7-719:2010
– 3 – prHD 60364-7-719:2010
6 Contents
7 Introduction . 4
8 719 Lighting installations for advertising signs with a rated output voltage not exceeding
9 1 000 V, which are illuminated by hot-cathode-fluorescent-lamps, luminous-discharge tubes
10 (neon-tubes), inductive discharge lamps, light emitting diodes (LED) and/or LED modules . 5
11 719.1 Scope and normative references. 5
12 719.2 Terms and definitions . 6
13 719.4 Protection for safety . 9
14 719.41 Protection against electric shock . 9
15 719.42 Protection against thermal effects . 10
16 719.421 General requirements . 10
17 719.482 Protection against fire for extra-low voltage installations where particular risks or dangers exist . 11
18 719.51 Selection and erection of electrical equipment . 11
19 719.514 Identification. 12
20 719.52 Wiring systems . 12
21 719.521 Types of wiring systems . 12
22 719.522 Selection and erection of wiring systems in relation to external influences . 13
23 719.525 Voltage drop in consumer’s LED installations . 13
24 719.526 Electrical connections . 14
25 719.55 Other equipment and light sources . 14
26 719.6 Verification . 17
27 Bibliography . 26
28
29 Figures
30 Figure 1 – Example of an arrangement within an internally illuminated letter/sign box . 18
31 Figure 2 – Example of an arrangement of a surface-mounted tube with the electrodes passing through a
32 metal panel. 19
33 Figure 3 – Example of an arrangement within an internally illuminated letter/sign box – Clearances and
34 creepage distances . 20
35 Figure 4 – Circuit diagram for constant LED voltage . 21
36 Figure 5 – Circuit diagram for constant LED current . 22
37 Figure 6 – Circuit diagram for constant LED module current . 23
38 Figure 7 – Example of an arrangement within an internally with LED illuminated letter/sign box . 24
39 Figure 8 – Example of an arrangement of a letter / sign box internally illuminated with LED . 25
40
41 Tables
42 Table 1 – Clearances and creepage distances for installation-wiring (excluding transformers, converters,
43
inverters and ballast) . 10
44 Table 2 – Maximum distance between the luminous-discharge tube supports. 12
45 Table 3 – Cross-sectional areas of conductors . 13
46
Draft for Enquiry

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oSIST prHD 60364-7-719:2010
prHD 60364-7-719:2010 – 4 –
47 Introduction
48 The requirements of this part of HD 60364 supplement, modify or replace certain of the general requirements
49 of the other parts of HD 60364.
50 The clause numbering of Part 719 follows the pattern and corresponding references of HD 60364.
51 The numbers following the particular number of Part 719 are those of the corresponding parts or clauses of
52 HD 60364.
53 The absence of reference to a part, a clause or a subclause means that the corresponding general
54 requirements of HD 60364 are applicable.
55
56 CLC/TC 64 Secretariat’s note
57 At the end of October 2008 the Technical Committee of the Netherlands recommended that
58 • this standard should be a product and not an installation standard, and
59 • it should not be a part of HD 60364, but should become a separate standard in the EN 50000 series.
60 In 2008, CLC/TC 64 officers already contacted CLC/TC 34Z officers and proposed them to transfer this
61 project under CLC/TC 34Z duty. CLC/TC 34Z officers were of the opinion that this project should fall under
62 the responsibility of CLC/TC 64.
st nd
63 At the meeting of the CLC/TC 64 on 31 March 2009 – 2 April 2009 in Oslo, Norway, the members
64 discussed details of this standard and also the recommendation of the Netherlands. Still some members of
65 CLC/TC 64 explained that this project contains both installation rules and product requirements.
66 Therefore the national Technical Committees are asked to comment, whether this standard should be an
67 installation standard and remain HD 60364-7-719, or should be a product standard and proposed again to
68 CLC/TC 34Z for inclusion in a EN 50000 series, for instance as a new Part 3 to EN 50107, or any other
69 suitable solution.
Draft for Enquiry

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oSIST prHD 60364-7-719:2010
– 5 – prHD 60364-7-719:2010
70 719 Lighting installations for advertising signs with a rated output voltage not exceeding 1 000 V,
71 which are illuminated by hot-cathode-fluorescent-lamps, luminous-discharge tubes
72 (neon-tubes), inductive discharge lamps, light emitting diodes (LED) and/or LED modules
73 719.1 Scope and normative references
74 719.1.11 Scope
75 This standard specifies the requirements for the installation and testing of all kinds and sizes of illuminated
76 signs with a no-load rated output-voltage up to 1 000 V, including the electrical components and wiring.
77 This standard covers installations used for signs, light-artworks and decorative purposes. These installations
78 may be either fixed or portable, supplied from a low-voltage or extra-low-voltage source by means of a
79 transformer, inverter, converter ballast or similar equipment.
80 NOTE In general, hot-cathode-fluorescent-lamps, luminous-discharge tubes (neon-tubes), inductive discharge lamps, light emitting
81 diodes (LED) and LED modules are used as light-sources.
82 719.1.12 Normative references
83 The following referenced documents are indispensable for the application of this document. For dated
84 references, only the edition cited applies. For undated references, the latest edition of the referenced
85 document (including any amendments) applies.
86 EN 50107-1:2002, Signs and luminous-discharge-tube installations operating from a no-load rated output
87 voltage exceeding 1 kV but not exceeding 10 kV – Part 1: General requirements
88 EN 50107-2, Signs and luminous-discharge-tube installations operating from a no-load rated output voltage
89 exceeding 1 kV but not exceeding 10 kV – Part 2: Requirements for earth-leakage and open-circuit
90 protective devices
91 EN 60081, Double-capped fluorescent lamps – Performance specifications (IEC 60081)
92 EN 60529:1991 + corr. May 1993 + A1:2000, Degrees of protection provided by enclosures (IP Code)
93 (IEC 60529:1989 + A1:1999)
94 EN 60598-1:2008 + A11:2009, Luminaires – Part 1: General requirements and tests
95 (IEC 60598-1:2008, mod.)
96 EN 60598-2-23:1996, Luminaires – Part 2-23: Particular requirements – Extra low-voltage lighting systems
97 for filament lamps (IEC 60598-2-23:1996)
98 EN 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1: Principles,
99 requirements and tests (IEC 60664-1:2007)
100 EN 60901, Single-capped fluorescent lamps – Performance specifications (IEC 60901)
101 EN 60921, Ballasts for tubular fluorescent lamps – Performance requirements (IEC 60921)
102 EN 60929, AC-supplied electronic ballasts for tubular fluorescent lamps – Performance requirements
103 (IEC 60929)
104 EN 61050, Transformers for tubular discharge lamps having a no-load output voltage exceeding 1 kV
105 (generally called neon-transformers) – General and safety requirements (IEC 61050)
106 EN 61195, Double-capped fluorescent lamps – Safety specifications (IEC 61195)
107 EN 61199, Single-capped fluorescent lamps – Safety specifications (IEC 61199)
Draft for Enquiry

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oSIST prHD 60364-7-719:2010
prHD 60364-7-719:2010 – 6 –
108 EN 61347-1:2008, Lamp controlgear – Part 1: General and safety requirements (IEC 61347-1:2007)
109 EN 61347-2-2:2001 + corr. Jul. 2003 + A1:2006 + corr. Nov. 2006 + A2:2006, Lamp controlgear –
110 Part 2-2: Particular requirements for d.c. or a.c. supplied electronic step-down convertors for filament lamps
111 (IEC 61347-2-2:2000 + A1:2005 + A2:2006)
112 EN 61347-2-3, Lamp controlgear – Part 2-3: Particular requirements for a.c. supplied electronic ballasts for
113 fluorescent lamps (IEC 61347-2-3)
114 EN 61347-2-8, Lamp controlgear – Part 2-8: Particular requirements for ballasts for fluorescent lamps
115 (IEC 61347-2-8)
116 EN 61347-2-10:2001, Lamp controlgear – Part 2-10: Particular requirements for electronic invertors and
117 convertors for high-frequency operation of cold start tubular discharge lamps (neon tubes)
118 (IEC 61347-2-10:2000)
119 EN 61347-2-13:2006, Lamp controlgear – Part 2-13: Particular requirements for d.c. or a.c. supplied
120 electronic controlgear for LED modules (IEC 61347-2-13:2006)
121 EN 62031:2008, LED modules for general lighting – Safety specifications (IEC 62031:2008)
122 EN 62384, DC or AC supplied electronic control gear for LED modules – Performance requirements
123 (IEC 62384)
1)
124 EN 62532 , Fluorescent induction lamps – Safety specifications (IEC 62532)
125 HD 384/60364 series, Electrical installations of buildings / Low-voltage electrical installations
126 (IEC 60364 series)
127 HD 60364-7-715:2005, Electrical installations of buildings – Part 7-715: Requirements for special
128 installations or locations – Extra-low-voltage lighting installations (IEC 60364-7-715:1999, mod.),
129 IEC 60050-826, International Electrotechnical Vocabulary – Part 826: Electrical installations
130 719.2 Terms and definitions
131 For the purposes of this document, the terms and definitions given in IEC 60050-826 (IEV) and the following
132 apply.
133 719.2.1 General
134 719.2.1.1
135 no-load rated output voltage
136 maximum rated voltage between the output terminals(s) of the transformer, inverter, converter, ballast or
137 power supplies connected to the rated supply voltage at rated frequency, with no load on the output circuit
138 NOTE 1 For output circuits supplied by transformers, it is the peak value divided by the square root of 2 (see EN 61050).
139 NOTE 2 For inverters or converters with sinusoidal waveform, it is the maximum rated voltage between the output terminals (see
140 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
141 mathematical calculation.
142 (from EN 50107-1:2002)
143 719.2.1.2
144 creepage distance
145 shortest distance along the surface of a solid installation material between two conductive parts
146 [EN 60664-1:2007, 3.3]
—————————
1)
 At draft stage. The current IEC document bears the number 34A/1370/CDV.
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147 719.2.1.3
148 clearance
149 shortest distance in air between two conductive parts
150 [EN 60664-1:2007, 3.2]
151 719.2.1.4
152 insulating sleeve
153 insulation designed to be placed over the exposed output-voltage connections at tube electrodes or over
154 cable-end insulators
155 719.2.1.5
156 electrical skilled person for illuminated signs
157 person qualified in sign installation practice who has knowledge and experience in the production,
158 installation, testing and maintenance of all kind of illuminated signs and who takes responsibility for the
159 installation and its testing in accordance with the standards
160 719.2.1.6
161 output circuit
162 that part of the device or installation between the output terminals of control gear including the light sources
163 and cables
164 [EN 50107-1:2002, 3.14, mod.]
165 719.2.2 Light sources
166 719.2.2.1
167 hot-cathode-fluorescent lamp
168 low-pressure discharge lamp with or without mercury, utilising electrodes operating by thermo-ionic emission
169 of electrons, and in which most of the light is emitted by one or several layers of phosphors excited by the
170 ultra-violet radiation from the discharge
171 [IEV 845-07-26, mod.] (from EN 60081)
172 719.2.2.2
173 luminous-discharge tube
174 tube, or other vessel or device, which is constructed of translucent material, hermetically sealed, and
175 designed for the emission of light arising from the passage of an electric current through a gas or vapour
176 contained within it
177 NOTE The tube may be with or without an internal fluorescent coating.
178 [EN 50107-1:2002, 3.1, mod.]
179 719.2.2.3
180 Light-Emitting Diode (LED)
181 solid state device embodying a p-n junction, emitting optical radiation when excited by an electric current
182 [IEV 845-04-40 and EN 62031:2008, 3.1]
183 719.2.2.4
184 LED module
185 unit supplied as a light source. In addition to one or more LED it may contain further components, e.g.
186 optical, mechanical, electrical and electronic, but excluding the control gear
187 [EN 62031:2008, 3.2]
188 719.2.2.5
189 induction lamp
190 assembly of a low pressure mercury discharge vessel and an inductive power coupler
191 [EN 62532:200X, 1.3.1]
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oSIST prHD 60364-7-719:2010
prHD 60364-7-719:2010 – 8 –
192 719.2.3 Control gear
193 719.2.3.1
194 power transformer
195 static piece of apparatus with two or more windings which, by electromagnetic induction, transforms a
196 system of alternating voltage and current into another system of voltage and current usually of different
197 values and at the same frequency for the purpose of transmitting electrical power
198 NOTE The high output impedance of most transformers designed for cold-cathode discharge tubes allows the characteristics of
199 transformer and current-limiting components to be combined in one unit.
200 [IEV 421-01-01]
201 719.2.3.2
202 lamp control gear
203 one or more components between the supply and one or more lamps which may serve to transform the
204 supply voltage, limit the current of the lamp(s) to the required value, provide starting voltage and preheating
205 current, prevent cold starting, correct power factor or reduce radio interference
206 NOTE This is the most comprehensive description of a device for operating lamps. It can be either electronic (ECG) or electro-
207 magnetic (copper-iron type).
208 (from EN 61347-1:2008)
209 719.2.3.3
210 ballast
211 unit inserted between the supply and one or more discharge lamps which by means of inductance,
212 capacitance, or a combination of inductance and capacitance, serves mainly to limit the current of the
213 lamp(s) to the required value
214 NOTE It may also include means for transforming the supply voltage and arrangements which help provide starting voltage and
215 pre-heating current (from EN 61347-1:2008). This definition concerns electro-magnetic (copper-iron) types. The expression, however, is
216 often used colloquially for any type).
217 719.2.3.4
218 inverter
219 electric energy transducer that converts direct current to alternating current
220 [EN 61347-2-10:2001, 3.3]
221 719.2.3.5
222 electronic step down converter
223 unit inserted between the supply and one or more incandescent lamps, which serves to supply the lamp(s)
224 with its (their) rated voltage, generally at high frequency. The unit may consist of one or more separate
225 components and may include means for dimming, correcting the power factor and suppressing radio
226 interference
227 (from EN 61347-2-2:2001)
228 719.2.3.6
229 electronic control gear for LED modules
230 unit inserted between the supply and one or more LED modules which serves to supply the LED module(s)
231 with their rated voltage or rated current. The unit may consist of one or more separate components and may
232 include means for dimming, correcting the power factor and suppressing radio interference
233 [EN 61347-2-13:2006, 3.1]
234 NOTE Further definitions are given in EN 61347-2-13 and in EN 62384.
235 719.2.3.7
236 earth-leakage protective device
237 device which will remove the output power from one or more transformer(s), inverter(s) or converter(s) in the
238 event of a short circuit between any relevant part of the output circuit and earth
239 [EN 50107-1:2002, 3.10, mod.]
240 NOTE Another further definition of an earth-leakage protective device is in EN 61347-2-10:2001, 3.5.
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241 719.2.3.8
242 illuminated sign
243 system with light sources which is intended for advertising signs, light-artworks, and/or decorative purposes
244 for indoor and outdoor installation, consisting of a combination of some apparatus, devices and components
245 which are assembled and/or installed by an installer on the site
246 719.2.3.9
247 flasher
248 device for automatically switching one or more output circuits on and off continuously
249 NOTE The sequence of switching of the various output circuits may be suitably arranged to provide the impression of movement and
250 other animated effects.
251 [EN 50107-1:2002, 3.20, mod.]
252 719.2.3.10
253 dimmer
254 device in the electric circuit for varying the luminous flux from light sources
255 [IEV 845-08-37, mod.: ”light-sources” instead of “lamps“]
256 719.4 Protection for safety
257 719.41 Protection against electric shock
258 719.41.A Provisions for basic protection (protection against direct contact)
259 719.41.A.2 Barriers or enclosures
260 719.41.A.2.1 Additional mechanical protection shall consist of an enclosure or other means of protection
261 conforming to the following.
262 a) It shall provide a degree of protection corresponding to at least IP2X as specified in EN 60529:1991,
263 Table I.
264 NOTE 1 The requirements for protection against ingress of solid objects, specified in EN 60529:1991, Table II, do not apply.
265 b) If it is constructed from metal parts, these shall be earthed in accordance with EN 50107-1:2002,
266 Clause 8.
267 NOTE 2 Good practice is to install a RCD in the mains supply.
268 c) If it is constructed from other materials, these shall be materials that have been certified by the supplier
269 as suitable for use in the environment existing close to a tube electrode, LED-modules or any type of
270 lamps. The installer shall obtain from the supplier a guarantee for the materials covering the expected
271 lifetime of the installation.
272 NOTE 3 Suppliers of such materials should be informed of the temperature, ultraviolet (UV) radiation, ozone and other conditions
273 existing near a tube electrode, LED-modules or any type of lamps. They should also be informed that such materials might be
274 used in exterior situations.
275 d) Access to the interior of an enclosure shall be by means of a tool, e.g. a screwdriver.
276 NOTE 4 Other means of additional protection may be permanent, e.g. it may have to be cut away using a knife.
277 NOTE 5 A fully enclosed sign letter or box sign is considered to be a suitable enclosure for this purpose.
278 719.41.A.2.2 Additional requirement
279 In the case of an illuminated sign with discharge tubes, the connections of the electrodes shall be covered
280 with insulating sleeves or heat shrinkable tubes. These insulating sleeves or shrinkable tubes shall be made
281 of a suitable insulating material which is resistant to the operating voltage, an operating temperature of not
282 less than 180 °C, UV radiation and ozone.
283 NOTE 1 This requirement is intended to prevent a person from touching a live electrode with a test probe, should the discharge tube
284 be broken.
285 NOTE 2 Figures 1 and 2 show the cross-sections of different letter and sign boxes.
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286 719.42 Protection against thermal effects
287 719.421 General requirements
288 719.421.X Protection against earth- and short-circuits by means of clearances and creepage
289 distances
290 719.421.X.1 Clearance and creepage distance shall be in accordance with Table 1:
291 a) between live parts carrying different supply voltages;
292 b) between live parts and earthed metalwork;
293 c) between live parts and flammable material. Refer to EN 60598-1:2008, Definition 1.2.41.
294 Table 1 – Clearances and creepage distances for installation-wiring
295 (excluding transformers, converters, inverters and ballast)
Clearances distances
mm
Room Frequency
≤ 50 V AC or ≤ 150 V or ≤ 250 V or ≤ 500 V or ≤ 750 V or ≤ 1 000 V or
√2 × 50 V DC √2 × 150 V DC √2 × 250 V DC √2 × 500 V DC √2 × 750 V DC √2 × 1 000 V DC
≤ 30 kHz 1,0 2,0 3,0 4,5 6,0 7,5
Dry
> 30 kHz 1,5 2,5 3,5 5,5 7,5 9,0
≤ 30 kHz 2,0 3,0 4,5 6,5 8,5 10,5
Damp or wet
> 30 kHz 2,5 3,5 5,0 7,5 10,0 12,5
Creepage distances
mm
Room Frequency
≤ 50 V AC ≤ 150 V AC ≤ 250 V AC ≤ 500 V AC ≤ 750 V AC ≤ 1 000 V AC
r.m.s. or DC r.m.s. or DC r.m.s. or DC r.m.s. or DC r.m.s. or DC r.m.s. or DC
≤ 30 kHz 1,5 3,0 4,5 6,0 8,0 10,0
Dry
> 30 kHz 2,0 3,5 5,0 7,5 10,0 12,0
≤ 30 kHz 2,5 4,0 6,0 9,0 12,0 15,0
Damp or wet
> 30 kHz 3,0 5,0 7,0 10,5 14,0 18,0
NOTE 1 Depending on the path under tests, the voltage in Table 1 is
a) either the no-load rated output voltage between the terminals of the control gear supplying the output circuit,
b) or the no-load rated output voltage between the terminals of the control gear and earth.
NOTE 2 Figure 3 shows the clearances and the creepage distances.
NOTE 3 All values of creepage distances and clearances are under consideration.
296
297 For working voltages below 25 V either the creepage distances and clearances in Table 1 or the electric
298 strength according to EN 60598-1 has to be applied.
299 719.421.X.2
300 If in the case of a possible discharge distance, the creepage distance is interrupted by an air gap of at least
301 1,5 mm, the shorter clearance from Table 1 may be applied for the complete stretch.
302 719.421.X.3
303 Should the air gap be less than 1,5 mm, the creepage distance is assumed to be unbroken. In this case the
304 values for the creepage distances in Table 1 are applicable.
Draft for Enquiry

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