EN 50291:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electrical apparatus for the detection of carbon monoxide in domestic premises – Test methods and performance requirementsElektrische Geräte für die Detektion von Kohlenmonoxid in Wohnhäusern - Prüfverfahren und Anforderungen an das BetriebsverhaltenAppareils électriques pour la détection de monoxyde de carbone dans les locaux à usage domestique - Méthodes d'essais et prescriptions de performancesElectrical apparatus for the detection of carbon monoxide in domestic premises - Test methods and performance requirements13.320Alarmni in opozorilni sistemiAlarm and warning systemsICS:Ta slovenski standard je istoveten z:EN 50291:2001SIST EN 50291:2002en01-april-2002SIST EN 50291:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDEN 50291NORME EUROPÉENNEEUROPÄISCHE NORMAugust 2001CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50291:2001 EICS 13.320English versionElectrical apparatus for the detection of carbon monoxidein domestic premises -Test methods and performance requirementsAppareils électriques pour la détectionde monoxyde de carbone dans leslocaux à usage domestique -Méthodes d'essais et prescriptionsde performancesElektrische Geräte für die Detektionvon Kohlenmonoxid in Wohnhäusern -Prüfverfahren und Anforderungen andas BetriebsverhaltenThis European Standard was approved by CENELEC on 2000-08-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,Portugal, Spain, Sweden, Switzerland and United Kingdom.SIST EN 50291:2002

- 3 - EN 50291:2001Contents1Scope.42Normative references.43Definitions.54General requirements.64.1General.64.2Construction.64.3Indicators and alarms.74.4Fault signals.84.5Output signal (applicable for type A apparatus only).84.6Labelling and instructions.85Test and performance requirements.95.1General requirements for tests.95.2Normal conditions for tests.105.3Test methods and performance requirements.116Self-contained battery powered apparatus.176.1Battery fault warning.176.2Battery capacity.176.3Battery reversal.186.4Battery connections.18Annex A
(informative)
Health effects.19Annex B (informative)
A-deviations.21SIST EN 50291:2002

- 5 - EN 50291:20013 DefinitionsFor the purposes of this European Standard the following definitions apply:3.1ambient airthe normal atmosphere surrounding the apparatus3.2clean airair which is free of carbon monoxide, interfering and contaminating substances3.3domestic premisesany house or building being a place of residence or home of a household, family or person3.4fixed installationan apparatus which is intended to have all parts except replaceable batteries permanentlyinstalled3.5latching alarman alarm which, once activated, requires deliberate action for resetting3.6sensoran assembly in which the sensing element is housed and which may contain associated circuitcomponents3.7sensing elementa device, the output of which will change in the presence of carbon monoxide3.8volume ratio (V/V)ratio of the volume of a component to the volume of the gas mixture3.9output signala signal characterised by a standby and an activation state by which action may be initiated,e.g. triggering a ventilation device3.10warm-up timethe time interval between the time when the apparatus is switched on and the time when theapparatus is fully operational3.11alarm set pointa fixed setting of the apparatus that determines the volume ratio and duration of exposure atwhich the apparatus will automatically initiate an alarm and, for type A apparatus an outputsignalSIST EN 50291:2002

The apparatus shall not be class 0 as defined in EN 60335-1.4.2 ConstructionThe apparatus shall comply with the appropriate requirements of EN 60335-1 as listed in Table 1.SIST EN 50291:2002

- 7 - EN 50291:2001Table 1 - Construction requirementsConstructional requirementEN 60335-1:1994 clauseProtection against accessibility to live parts8Heatingrelevant parts of 11Leakage current and electrical strength at operating temperature13Moisture resistance15.1 and 15.3Leakage current and electrical strength16Overload protection of transformers and associated circuits17Abnormal operation19Construction22Internal wiring23Components24.1,24.2, 24.4, 24.5Supply connection and external flexible cords25.3Terminals for external conductors26Provision for earthing27Screws and connections28Creepage distances, clearances and distances through insulation29Resistance to heat, fire and tracking30Resistance to rusting314.3 Indicators and alarms4.3.1 Visual indicators shall be fitted and coloured as follows:a) power supply indicators shall be coloured green;b) alarm indicators shall be coloured red;c) where fitted, the visual fault alarm shall be yellow.The indicators shall be marked to show their function.The indicators shall be visible when the apparatus is installed in its operating position according to themanufacturer’s instructions.4.3.2 The apparatus shall have an audible alarm, see 5.3.16.4.3.3 Alarm indicators and audible alarms shall operate simultaneously at the set points aslisted in Table 2.Table 2 - Alarm conditionsCO ConcentrationNo alarm beforeAlarm before30 ppm120 minutes-50 ppm60 minutes90 minutes100 ppm10 minutes40 minutes300 ppm-3 minutesOnce activated, the alarm shall remain in operation at carbon monoxide concentrations above50 ppm.NOTE
A latching alarm may be used to accomplish the requirements of this clause.SIST EN 50291:2002

- 9 - EN 50291:2001b)For battery powered apparatus the type and size of replacement batteries, normaloperating life, battery replacement instructions, and info
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