oSIST prEN 50172:2022

SLOVENSKI STANDARD
oSIST prEN 50172:2022
01-julij-2022
Sistemi za zasilno razsvetljavo evakuacijskih poti
Emergency escape lighting systems
Sicherheitsbeleuchtungsanlagen
Systèmes d'éclairage de sécurité
Ta slovenski standard je istoveten z: prEN 50172
ICS:
91.160.10 Notranja razsvetljava Interior lighting
oSIST prEN 50172:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50172:2022

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oSIST prEN 50172:2022


EUROPEAN STANDARD DRAFT
prEN 50172
NORME EUROPÉENNE

EUROPÄISCHE NORM

May 2022
ICS 91.160 Will supersede EN 50172:2004
English Version
Emergency escape lighting systems
Systèmes d'éclairage de sécurité Sicherheitsbeleuchtungsanlagen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2022-08-19.

It has been drawn up by CLC/TC 34.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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 European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 69240 Ref. No. prEN 50172 E

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oSIST prEN 50172:2022
prEN 50172 :2022 (E)
1 Contents Page
2 European foreword . 4
3 Introduction . 5
4 Table 1 – emergency lighting forms, taken from EN 1838:2022 . 5
5 1 Scope . 6
6 2 Normative references . 6
7 3 Terms and definitions . 7
8 4 General . 9
9 4.1 Normal lighting failures . 9
10 4.2 Minimum requirements . 9
11 4.3 Permanently occupied buildings . 9
12 4.4 Electrical installation . 10
13 4.5 Wiring systems . 10
14 5 Emergency escape lighting system design . 10
15 5.1 Plan of premises and documentation . 10
16 5.2 Emergency escape lighting equipment . 10
17 5.2.1 General . 10
18 5.2.2 Emergency Luminaires . 11
19 5.2.3 Central safety power supply systems . 11
20 5.2.4 Automatic test systems . 11
21 5.3 Identification marking . 11
22 6 Handover of the Emergency Escape Lighting Systems . 11
23 6.1 Responsibilities . 11
24 6.2 Handover Documentation . 11
25 7 Maintenance and verification . 12
26 7.1 General . 12
27 7.2 Logbook (Reporting) . 12
28 7.3 Initial verification . 13
29 7.4 Periodic inspections . 14
30 7.4.1 General . 14
31 7.4.2 Daily verification . 14
32 7.4.3 Monthly verification . 14
33 7.4.4 Bi-annual verification . 15
34 7.4.5 Annual verification . 15
35 7.4.6 The date of the annual verification and its results shall be recorded in the system
36 logbook. Five-year verification . 15
37 Annex A (informative) Rated duration and activation times . 16
38 A.1 Rated Duration . 16
39 A.2 Activation Times . 16
40 Table A.1 - recommended rated durations by installation type . 17
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41 Annex B (informative) On-site luminance and illuminance measurements . 18
42 B.1 Introduction . 18
43 B.2 General . 18
44 B.3 Illuminance and luminance meters . 18
45 B.4 Measurement of Emergency Lighting Illuminance levels . 19
46 B.4.1 General considerations . 19
47 B.4.2 Method A . 20
48 B.4.3 Method B . 20
49 B.4.4 Method C . 20
50 B.4.5 Method D . 21
51 Figure B.1 – Overview of measurement correction methods . 22
52 B.5 Illuminance measurements on site . 22
53 B.5.1 General . 22
54 B.5.2 Illuminance measurements of open area (anti panic) lighting, local area lighting and high
55 risk task area lighting . 23
56 B.5.2.1 Initial verification . 23
57 B.5.2.2 Five-year verification . 23
58 B.5.3 Illuminance measurement of escape route lighting . 23
59 Table B.1 – Measuring grid for escape route lighting . 24
60 B.6 Escape route safety signs . 24
61 B.6.1 Internally illuminated escape route safety signs . 24
62 B.6.1.1 Initial verification . 24
63 B.6.1.2 Five-year verification . 24
64 B.6.2 Externally illuminated escape route safety signs . 24
65 B.6.2.1 Initial verification . 24
66 B.6.2.2 Five-year verification . 24
67 B.7 Conformity assessment . 25
68 Annex C (Informative) Considerations for emergency lighting systems during and after a premises
69 lockdown or prolonged periods where power is disconnected. 26
70 C.1 Introduction . 26
71 C.2 Disconnection of Power. 26
72 C.3 Servicing and Testing . 26
73 C.4 Reoccupation . 26
74 Bibliography . 27
75
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76 European foreword
77 This document [prEN 50172:2022] has been prepared by CLC/TC 34” Lighting”.
78 This document is currently submitted to the Enquiry.
79 The following dates are proposed:
• latest date by which the existence of this docu- (doa) dor + 6 months
ment has to be announced at national level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by endorse-
ment
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be with- (to be confirmed or
drawn modified when voting)
80 This document will supersede EN 50172:2004 and all of its amendments and corrigenda (if any).
81 EN 50172:2022 includes the following significant technical changes with respect to EN 50172:2004:
82 DRAFTING NOTE (will be removed before publication)
83 A list of change items will be made available at FprEN stage
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84 Introduction
85 Table 1 shows an overview of the different forms of emergency lighting. Please refer to the introduction of
86 EN 1838 for a more detailed explanation and description.
87 Table 1 – emergency lighting forms, taken from EN 1838:20221
Emergency lighting
Emergency escape lighting Standby lighting
Escape route light- Open area Safety lighting
ing (anti-panic)
Local area High risk task area
lighting
lighting lighting
Safety signs including adaptive safety signs
88 While EN 1838 includes luminous requirements for emergency escape lighting systems (and standby lighting
89 systems), this document provides electrical installation requirements specific for emergency escape lighting
90 systems together with verification, operation and maintenance documentation and test requirements for such
91 systems. Emergency lighting is a key element of building safety and of utmost importance to prevent harm and
92 save lives in emergency situations. Such situations are rare, but their rarity is also the reason why issues may
93 remain undetected and the functionality of the emergency lighting system may thus be impaired just in the very
94 moment that emergency lighting is actually required. Such issues may be related to building layout updates or
95 changes in use pattern, or simply the ageing of emergency lighting equipment over time, for instance. Therefore,
96 maintenance of emergency lighting systems is just as essential as its initial proper installation.
97 Hence, this document does contain detailed requirements not only for the initial verification of emergency es-
98 cape lighting systems, but also for its continuous monitoring and maintenance which is the only way to ensure
99 that emergency escape lighting will adequately provided whenever required.
100 Note that legal requirements throughout Europe are not limited to the initial installation of emergency lighting,
101 but also comprise requirements related to continuous monitoring and maintenance.
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102 1 Scope
103 DRAFTING NOTE (will be removed before publication)
104 National committees are kindly asked to prepare aligned comments to prEN 1838 and prEN 50172,
105 for instance by a joint meeting of the relevant mirror committees.
106 This document specifies electrical installation requirements specific for emergency escape lighting systems to-
107 gether with verification, operation and maintenance documentation and test requirements for such systems.
108 DRAFTING NOTE (will be removed before publication)
109 Electrical installation requirements specific for emergency escape lighting systems” may or may not
110 be covered finally in the document – de-pending on the technical requirements as agreed for this doc-
111 ument. Thus, corresponding technical requirements may be removed in which case also the scope
112 would be amended accordingly
113 NOTE 1 Emergency escape lighting includes escape route lighting, open area (anti-panic) lighting, local area lighting
114 and high risk task area lighting. Escape routesafety sings are part of emergency escape lighting.
115 NOTE 2 Emergency escape lighting systems include adaptive and non-adaptive, as well as high and low-mounted sys-
116 tems.
117 This document does not apply to standby lighting.
118 NOTE 3 Systems used for standby lighting may also be used for emergency escape lighting, given the corresponding
119 requirements are fulfilled, see prEN 1838:2022, Clause 4.
120 2 Normative references
121 The following documents are referred to in the text in such a way that some or all of their content constitutes
122 requirements of this document. For dated references, only the edition cited applies. For undated references, the
123 latest edition of the referenced document (including any amendments) applies.
124 prEN 1838, Lighting applications - Emergency lighting
125 ISO 8528-12, Reciprocating internal combustion engine driven alternating current generating sets - Part
126 12: Emergency power supply to safety services
127 EN 50171, Central power supply systems
128 HD 60364-5-56, Low-voltage electrical installations - Part 5-56: Selection and erection of electrical equip-
129 ment - Safety services
130 HD 60364-6:2016, Low-voltage electrical installations - Part 6: Verification
131 EN 60598-2-22, Luminaires - Part 2-22: Particular requirements - Luminaires for emergency lighting
132 EN 62034, Automatic test systems for battery powered emergency escape lighting
133 EN IEC 62485-2, Safety requirements for secondary batteries and battery installations - Part 2: Stationary
134 batteries
135 EN 62485-5, Safety requirements for secondary batteries and battery installations - Part 5: Lithium-ion
136 batteries for stationary applications
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137 3 Terms and definitions
138 For the purposes of this document, the terms and definitions given in prEN 1838:2022 and the following apply.
139 3.1
140 emergency lighting
141 lighting (IEV 845-29-001) provided for use when the power supply to the normal electric lighting fails
142 [SOURCE: IEC 60050-845-29-010:2020, modified: The note was deleted]
143 3.2
144 emergency escapelighting
145 part of emergency lighting that provides illumination or visibility and escape route safety signage for the guid-
146 ance and the safety of people leaving a location to a place of safety or attempting to terminate a potentially
147 hazardous process before doing so
148 [SOURCE: EN 12665:2018, modified]
149 3.3
150 emergency escape lighting system
151 all items functioning together in order to provide emergency escape lighting
152 Note 1 to entry: This includes luminaires, controlgear, wiring etc.
153 3.4
154 standby lighting
155 part of emergency lighting provided to enable normal activities to continue substantially unchanged
156 [SOURCE: IEC 60050-845-29-013:2020, modified - The note was deleted]
157 3.5
158 escape route lighting
159 part of emergency escape lighting provided to ensure that the means of escape can be effectively identified and
160 safely used when the location is occupied
1
161 [SOURCE: EN 1838:2022 ]
162 3.6
163 open area (anti-panic) lighting
164 part of emergency escape lighting provided to avoid panic and provide illumination allowing people to reach a
165 place where an escape route can be identified
1
166 [SOURCE: EN 1838:2022 ]
167 3.7
168 local area lighting
169 part of emergency escape lighting that provides illumination for people allowed to remain temporarily in a prem-
170 ise during a mains supply failure if it is risk assessed for the activities that are allowed to be performed
1
171 [SOURCE: EN 1838:2022 ]
172 3.8
173 high risk task area lighting
174 part of emergency escape lighting that provides illumination for the safety of people involved in a potentially
175 dangerous process or situation and to enable proper shut down procedures for the safety of the operator and
176 other occupants of the building
1
177 [Source: EN 1838:2022 ]
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178 3.9
179 emergency luminaire
180 luminaire which may or may not be provided with its own electrical source for safety services and which is used
181 for emergency lighting
182 Note 1 to entry: Emergency luminaires include internally illuminated escape route safety signs and luminaires providing light
183 for externally illuminated escape route safety signs.
184 3.10
185 self-contained emergency luminaire
186 luminaire providing maintained or non-maintained emergency lighting in which all the elements, such as the
187 battery, the lamp, the control unit and the test and monitoring facilities, where provided, are contained within the
188 luminaire or adjacent to it (that is, within 1 m cable length)
189 [SOURCE: IEC 60598-2-22:2014]
190 3.11
191 escape route safety sign
192 sign that gives a general safety message, obtained by a combination of colour and geometric shape and which,
193 by the addition of a graphical symbol, gives a particular safety message
194 [SOURCE: EN 1838:2022]
195 3.12
196 internally illuminated escape route safety sign
197 escape route safety sign that is illuminated, when it is required, by an internal source
198 [SOURCE: EN 1838:2022]
199 3.13
200 externally illuminated escape route safety sign
201 escape route safety sign that is illuminated, when it is required, by an external emergency luminaire
202 [SOURCE: EN 1838:2022]
203 3.14
204 central safety power supply system
205 central power supply system which supplies the required power to essential safety equipment with any rated
206 power output
207 [SOURCE: FprEN 50171:2021]
208 3.15
209 electrical source for safety services
210 electrical source intended to be used as part of an electrical supply system for safety services
211 [SOURCE: IEC 60364-5-56:2018]
212 3.16
213 automatic test system
214 ATS
215 automated test system that may be manually initiated, consisting of parts (such as timers, current detectors,
216 light detectors, changeover switches) which, when connected together, make a system that can carry out the
217 routine testing requirements of emergency luminaires, and indicate the test results
218 [Source: IEC 62034:2012, modified: “emergency lighting luminaires” was replaced by “emergency luminaires”]
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219 3.17
220 rated duration
221 declared period of time that the luminous requirements of the emergency lighting system are met
222 3.18
223 activation time
224 time between failure of the supply to the normal lighting and emergency lighting reaching the required level of
225 illuminance
226 4 General
227 4.1 Normal lighting failures
228 Emergency escape lighting shall be provided promptly, automatically and for a suitable time in a specified area
229 when the power supply to the normal lighting fails.
230 This further includes:
231 – Operation/tripping of circuit protection devices. However, where an area is served by multiple lighting cir-
232 cuits, monitoring of all circuits or circuit protection devices may not be required, if the failure of one or more
233 circuits or operation of circuit protection devices is not expected to cause the normal lighting in this specified
234 area to fall below the illuminance levels required for emergency escape lighting.
235 – Failures of the lighting control system where this is expected to cause the normal lighting in this specified
236 area to fall below the illuminance levels required for emergency escape lighting.
237 NOTE 1 Normal lighting supply failures include interruptions of the power supply from the electricity supplier.
238 NOTE 2 Required illuminance levels are given in EN 1838.
239 NOTE 3 Lighting control system refers to a networked system of devices related to lighting control only, that incorporates
240 communication between various system inputs and outputs, with the use of one or more central computing device(s).
241 4.2 Minimum requirements
242 To facilitate the evacuation of a building during emergency operation, sufficient minimum illuminance, an ade-
243 quate activation time and rated duration are required.
244 Annex A gives guidance on factors that should be considered in relation to the rated duration and activation
245 times of emergency escape lighting systems.
246 Compliance is checked by designing and installing the emergency escape lighting system in accordance with
247 the applicable standards and regulations and according to the requirements in this document including mainte-
248 nance and verifications.
249 4.3 Permanently occupied buildings
250 For permanently occupied buildings that provide sleeping accommodation and require a rated duration greater
251 than three hours, the duration may be reduced to three hours where the emergency escape lighting is not
252 required continuously in all areas, under the following conditions:
253 – The risk assessment, if required, and regulation allows for such a reduction
254 – In case of a power failure, the emergency escape lighting shall be activated for at least the time required
255 for the evacuation of the building after which it shall switch off automatically
256 – Emergency escape lighting can be reactivated for at least the time required for the evacuation of the build-
257 ing by permanently illuminated push buttons, powered from the electrical source for safety services (ESSS),
258 which shall be installed as local switching devices in such a way that at least one button can be discerned
259 from any location
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260 NOTE 1 Requirements for rated durations of more than three hours can originate from national or regional legislation.
261 NOTE 2 Above requirements do not allow that emergency escape lighting is manually switched off.
262 NOTE 3 Above requirements are not confused with the rest mode of emergency luminaires where responsible persons can
263 switch off the emergency escape lighting.
264 4.4 Electrical installation
265 The electrical installation shall comply with the requirements specified in national installation rules for electrical
266 supply systems for safety services based on HD 60364-5-56.
267 4.5 Wiring systems
268 When premises are unoccupied, circuits may be switched in such a way as to prevent unintentional operation
269 of the electrical source for safety services that supply the emergency escape lighting system. For self-contained
270 emergency luminaires this requirement is deemed covered by the application of EN 60598-2-22.
271 The wiring between the electrical source for safety services and the main distribution board of the emergency
272 escape lighting system shall be protected against short circuit and earth faults.
273 Only one supply circuit shall be contained in one cable.
274 NOTE One cable can contain one or more auxiliary circuits, e.g. for control or monitoring.
275 For central safety power supply systems, if the normal power supply is available at the emergency escape
276 lighting distribution board, the charging of the electrical source for safety services shall be ensured.
277 In this case, no power shall come from the electrical source for safety services (discharge mode).
278 In all circuits of the emergency escape lighting system, the characteristics of the electrical source for safety
279 services, the protective devices and the conductor cross-sections shall be selected such that, in the event of a
280 short circuit, a short-circuit current (the smallest possible) flows at any point of the installation, ensuring discon-
281 nection by means of an overcurrent protective device within a period of 5 s.
282 In the event of a fault in the distribution circuit, the next protective device towards the central safety power supply
283 shall operate selectively to minimize the number of distribution circuits that will be isolated.
284 5 Emergency escape lighting system design
285 5.1 Plan of p
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