CENTRAL BATTERY SYSTEMS - Освещение

cc1278 cat07 emer central battery:central battery5/11/0714:58Page 371CENTRAL BATTERY SYSTEMSCentral battery system based emergency lighting is ideal forCooper Lighting and Security manufactures a wide rangemedium to large installations. For projects where centralof central battery emergency lighting systems. Standardcontrol and testing is desirable, a central battery system is aproducts include AC/AC static inverter systems, with theviable and cost effective alternative to self-containedaddition of a new compact, competitively priced unit foremergency lighting products.smaller installations. A comprehensive range of traditionalAC/DC systems are also available, including an economyThe main advantages of central battery systems overrange designed for use in small premises. Bespoke systems toself-contained systems are:suit the exact requirements of the specifier are also available. Testing and maintenance is much easier to carry out Battery life is generally 10 years or more Luminaires can be centrally controlled High light levels can easily be achieved The emergency lighting system can be completelyunobtrusiveTo complement the range of central battery systems, CooperLighting and Security also offers a wide selection of Menvierand JSB slave luminaires and conversion modules for mainsfluorescent luminaires. EasiCheck automatic self-testing can bereadily incorporated into central systems.371The CeaGuard family offers a selection of compact centralsystems for small and large installations, operating speciallyconverted slave luminaires. All test signalling and reportingfor CeaGuard systems is carried down the power cable.The following pages provide a guide to system design andstandards, in addition to the comprehensive range of centralsystem products available from Cooper Lighting and Security System Design (See page 372) Loadstar AC/DC Systems (See page 383) Economy AC/DC Systems (See page 390) Loadstar Static Inverter AC/AC Systems (See page 393) Compact Static Inverter AC/AC (See page 400) Switchgear Tripping Battery Chargers (See page 404) CeaGuard Automatic Testing Central Systems (See page 406) Slave Luminaire Technical Data (See page 417)Emergency - Central Battery Systems Battery replacement is much quicker and less disruptive

cc1278 cat07 emer central battery:central battery5/11/0714:59Page 372SYSTEM DESIGNCENTRAL BATTERY SYSTEM DESIGNWhen it has been decided that a central battery system is themost suitable system of emergency lighting for a particular site,the designer needs to give consideration to the following: Lighting designType of systemSystem control & mode of operationBattery typeSystem sizingBattery room ventilationThis section of the catalogue provides a guide to how to choosethe most suitable type of central battery system and then how toensure it will meet the installation requirements.Technical assistance is available to help you with selecting anddesigning a system correctly. Contact the Cooper Lighting andSecurity Central Systems Technical Sales department,Tel: 01302 303240 or E-mail: central.systems@cooper-ls.comLIGHTING DESIGN CONSIDERATIONS372Current legislation and design increases the attraction of usingcentral battery systems to provide emergency lighting in a building.In particular, an increase in the use of static inverter systems,which provide an alternative source of power to normal mainsluminaires. These considerations can be summarised as follows:1. BS 5266 part 7 (EN 1838) specifies increased emergencylight levels than previous standards2. Slave luminaires, operating from AC/DC and AC/AC centralsystems, offer a higher light output and improved spacingcharacteristics over comparable self-contained versions of thesame luminaire3. Compact fluorescent lamps make ideal slave luminaires,offering high efficiency and appropriate light output for areaswith low ceilings4. There is an increasing requirement from architects and usersto make emergency lighting as unobtrusive as possible,so utilisation of the normal mains luminaires is an ideal solutionEmergency - Central Battery SystemsThrough the use of dedicated slave luminaires and conversionmodules for mains fluorescent luminaires, these considerations canbe catered for by both AC/DC and AC/AC central systems.An illustration of the increased output that can be expected from8W slave luminaires compared to self-contained versions is shownin figure 1.Fig. 1Light output of different types of luminaire (nominal lamp lumens based onstandard 8 Watt fitting)2723002211802001008002 Cell3 CellSelf-contained Self-containedAC/DCSlaveStatic InverterAC/AC SlaveWhen performing photometric calculations for converted mainsluminaires with static inverter systems, the full design lumen outputof the luminaire must be taken into account, as the lamps arepowered by conventional ballasts. It is important to ensure that theuse of such high output luminaires in low ceiling areas does notexceed the uniformity factor limitations. The utilisation factor shouldbe taken at zero reflectance in line with BS 5266 Pts. 1 and 71999. Typical spacing data is provided at the rear of thiscatalogue, to assist in the calculation of spacing.

cc1278 cat07 emer central battery:central battery5/11/0714:59Page 373SYSTEM DESIGNTYPE OF SYSTEMThere are numerous different combinations of central battery system type and the correct choice depends as much on customer preference ason design criteria. The selection chart below gives some general guidance. Should you wish to discuss a proposed system type for a particularapplication, our technical department is available to provide assistance. Contact the Central System Technical Sales department,Tel: 01302 303240 or E-mail: central.systems@cooper-ls.com.Do you want dedicatedemergency luminaires ordo you require the emergencylighting to be integratedwithin the normal lighting?IntegratedEither use a maintainedbattery unit with conversionmodules (see note 1)or static inverterunit (see note 2)373DedicatedUse a non-maintainedbattery unit or maintainedbattery unit with hold offrelays or static inverter withsub-circuit monitorsNoneof thelightingDo you want the emergencylighting to be illuminatedwhilst the mains is healthy?eg. maintained emergencylighting, security lightingor nightlighting applications?All of thelightingUse dedicated slaveluminaires powered fromeither a maintained batteryunit or static inverter unit(see note 3)Someof thelightingNOTESNOTES1. Conversion modules are designed to be incorporated into aconventional mains luminaire. During normal conditions theluminaire operates at full brightness (using the normal switchedmains supply and conventional control gear). In emergencyconditions the luminaire continues to operate at reducedbrightness (with the emergency lamp being powered from theconversion module instead of the conventional control gear).Conversion modules are ideal for use with mains luminaireswhich have louvres with a sharp cut off angle, or for projectswhere the mains luminaires have multiple tubes, but only onetube is required to be illuminated during emergency conditions.emergency lighting levels, or for powering compact fluorescentluminaires where there is often insufficient space within thefitting to accommodate a conversion module.2. Static inverters provide mains voltage output during bothnormal and emergency conditions. They are designed to runconventional mains fittings at full brightness even in emergencyconditions. Static inverters are ideal for projects with largeopen areas, or hazardous areas requiring higher than normal3. Static inverter systems operate the emergency luminaires atfull brightness throughout the emergency autonomy period,which usually results in significantly improved luminaire spacingfor mains slave luminaires compared with an equivalent lowvoltage AC/DC unit. In addition, the combination of highersupply voltage and the resultant reduced input current reducesinstallation costs by allowing the use of smaller distributioncables than would be required with a lower voltage AC/DCsystem.Please note - BS EN 60598-2-22 prohibits the use of glow startersin fluorescent luminaires used for emergency lighting.Emergency - Central Battery SystemsUse a maintained unit orstatic inverter unit(see note 3) with hold offrelays to control thenon-maintained luminaires

cc1278 cat07 emer central battery:central battery5/11/0714:59Page 374SYSTEM DESIGNSYSTEM CONTROL & MODE OF OPERATIONIt is a requirement of any correctly designed emergency lighting system that the emergency lighting is activated both in the event of completemains failure, and also in the event of a local mains failure. The emergency lighting system can have luminaires that are maintained ornon-maintained. Similarly, the central battery unit can also be maintained or non-maintained operation. The following diagrams explain howactivation of the emergency lighting is achieved, using the main types of central battery systems.Central systems with dedicated slave luminaires374a) Non-maintained central battery unit with sub-circuitmonitors.With this method, relays are used to monitor the normal lightingsupplies. The contacts of these relays are wired in a series loopsuch that in the event of failure of any of the normal lightingsupplies, the loop is broken, sending a signal to the centralbattery unit to activate all of the emergency luminaires.Details of purpose-made remote sub-circuit monitor units can beNormal mains healthy conditionKEYEmergency - Central Battery Systems- LIVE- DEADFailure of normal lighting final circuitTotal mains failure

cc1278 cat07 emer central battery:central battery5/11/0714:59Page 375SYSTEM DESIGNSYSTEM CONTROL & MODE OF OPERATIONCentral systems with dedicated slave luminaires (cont’d)b) Maintained central battery unit with the maintained circuitcontinuously energised. A simple installation where emergencyluminaires are illuminated at all material times irrespective of thestatus of the normal lighting. In the event of a complete mainsfailure, the slave luminaires are illuminated from the batterysupply.Normal mains healthy conditionFailure of normal lighting final circuitTotal mains failure375KEY- LIVE- DEADc) Maintained central battery unit with remote hold off relays.Normal mains healthy conditionKEY- LIVE- DEADIn the event of a local mains failure, the relay drops out, thecontacts close and the emergency luminaires in that particulararea are illuminated from the maintained circuit of the batteryunit. In the event of a complete mains failure, the systemoperates in a similar manner, except that the slave luminairesare illuminated from the battery supply. Details of purpose-maderemote hold off relays can be found in the Loadstar productsection.Failure of normal lighting final circuitTotal mains failureEmergency - Central Battery SystemsThe maintained output from the battery unit is fed to a numberof remote hold off relays throughout the building. The coil of thehold off relay is connected to the unswitched side of the localnormal lighting supply. Assuming this supply is healthy, the relaywill pull in, opening the contacts and preventing power fromreaching the slave luminaires.