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Engineer’s CompanionEMEX Central Power Supply Systems
Turn over for full details on how to specify an EMEX Central Power Supply System
Effective emergency power from Emergi-LiteWhy choose EMEX Power?With exceptional performance, precisionengineering and easy maintenance, it’ssimple to see why EMEX Power is the assuredchoice for engineers and consultantspreparing centrally powered emergencylighting schemes.
EMEX Power is manufactured at our ISO 9001approved facility in the UK and has been specificallydesigned to power emergency lighting in a mainsfail or evacuation situation. Therefore the systemcarries the capacity to start the full luminaire loadwithout mains supply present, offers excellentoverload and recharge capabilities, and includesenhanced protection with MCB’s throughout.
Furthermore, as a power supply system toemergency lighting, EMEX Power meets all therequirements of ICEL 1009 and BS EN 50171product standards.
In effect, EMEX Power has been designed tomeet the most stringent demands of emergencylighting scheme designers, engineers, buildingowners/occupiers and the requirements of localfire authorities.
Key benefits of EMEX Power:Extended system life: EMEX Power system design lifein excess of 20 years, providing excellent ROI
Long life batteries: Battery life up to twice that of aself-contained system
System flexibility: Flexible design enables theEMEX system to manage any load power factor, fromzero to unity, at any output power up to themaximum rated KVA
Modular construction: Five key components forminimal stock holding of parts, easy maintenanceand reduced system downtime/cost of repair
Enhanced testing facility: Fully compatible withEMEX Test automated testing solution (availableas either integral touch-screen – EMEX TS – orremote PC)
With all its benefits, deciding in favour of EMEXPower is simple, yet choosing the correct size ofsystem requires in-depth assessment. Thiscompanion booklet has been prepared to helpengineers/designers specify their exactrequirements and to provide clear guidance on therange of EMEX Power products available.
Why choose EMEX Power?
Specifying EMEX Power
UK Sales & Technical Support:Tel: +44 (0)113 281 0600, Fax: +44 (0)113 281 0601, email: [email protected]
Specifying EMEX Central PowerSupply (CPS) SystemsEmergency lighting schemes are designed toprotect life. In the event of a fire, or mainssupply failure, escape route lighting and exitsigns must illuminate and maintain power fora sufficient period of time to allow occupantsto safely evacuate the building.
Therefore, for an engineer working on a centrallypowered emergency lighting scheme, the keyrequirement is to ensure that the central powersupply unit specified is capable of meeting thepower consumption demands of all the emergencyluminaires planned in the system, for the durationof time needed for safe evacuation.
Furthermore, in these energy conscious times,engineers and scheme designers need to balancethe power requirements of the system with theneeds of the building user for ongoing energyefficiency. Too little power designed into the systemrisks failure to start the emergency luminaires ondemand. However, overspecifying requirementssimply leads to ongoing energy wastage andincreased costs for the building owner/occupier.
Best Practice – Quantified Luminaire Schedules
Providing key information to the CPS system supplier ensures specification of the most appropriate systemfor the emergency lighting scheme, and the most accurate quotation!
Consider putting together a quantified luminaire schedule (hardcopy or electronic format) along thefollowing lines to assist with system specification:
For further advice & assistance, please contact Emergi-Lite Central Power Supply Technical Support.
Luminaire Type Luminaire Name & Part Number Manufacturer Power Consumption Wattage Quantity in Scheme
8w Linear T5 Day-Lite XW13111HF Emergi-Lite 10.70 9.00 100
28w2D Camarque CLQ28PHF Emergi-Lite 34.00 32.60 20
Proper assessment of the power consumption needsand wattage of the luminaires in the scheme canovercome these concerns.
Key specification criteriaTo accurately determine the size of CPS systemrequired for an emergency lighting scheme,consider and define the following:
� Luminaire type and manufacturer (includingluminaire part numbers if available)
� Quantity of luminaires in the scheme (per type)
� Actual wattage for each luminaire type
� Required VA for each luminaire type
Both the VA requirement and the actual wattage(the luminaire circuit wattage) requirement of theload should be specified, since they each affect thesizing of a different system component. Essentially,wattage establishes the battery size, VA confirmsthe size of inverter. Establishing both ensures thebest match between the requirements of inverterto load.
The ratio between VA and wattage is termed thePower Factor (PF) of the luminaire, and is highlyimportant to CPS specification and sizing.
Essentially the Power Factor determines theefficiency of the luminaire. Power figures for lamptypes can vary significantly between manufacturers.Obtaining manufacturer’s data for each luminaire istherefore the best accurate method for calculatingtotal power consumption.
Occasionally, only limited information on luminairewattage and VA is available. In these instances,where the required VA of the equipment is known,assume a load power factor of Unity PF to calculatethe wattage requirement of the load and theinverter size required. Where the wattage of theluminaires is provided, and is less than 20w,assuming 0.85 PF would be the best practice.
Emergi-Lite offers CPS systems to suit both 0.85 andUnity Power Factor.
Middle East Sales & Technical Support:Tel: +971 (0)4 609 1635, Fax: +971 (0)4 609 1636, email: [email protected]
Power Factor (PF) considerationsEMEX AC/AC Central Power Supply (Static Inverter)systems distribute power at mains voltage that canutilise all the lamps within a luminaire at full ballastlumen factor (BLF) for the luminaire.
In order to get the full light output from the tubeit is necessary to put more than the actual ratedlamp wattage into the luminaire, since, in additionto energy that is given out as light, some is alsolost in the form of heat. This energy affects thebattery size.
Additionally, some ballasts (in particular switch startmagnetic types), operate at a higher current thanthe rated power, i.e. less than Unity Power Factor.This means that there is a part of the power inputthat does not consume energy, but circulates fromsource to luminaire. This “wattless” component hasto be supplied from the CPS, and causes its VArating to be increased. This does not affect thebattery size.
This variance between required load VA and ratedlamp wattage must be considered. The ratio ofactual watts / VA is known as the Power Factor.Power factors of some ballasts can be as low as0.33. If all luminaires in the system have this PowerFactor, then the CPS would have to be three timeslarger than for a Unity PF load! Figures for lamptypes can vary significantly between manufacturers.Therefore, the total actual power consumption inwatts and VA must be assessed.
A key contributor to Power Factor is the type ofcontrol equipment used by the luminaire. Twotypes of control equipment are readily available foremergency luminaires – Electronic High Frequency,
or Switch Start. High Frequency is much moreefficient than cheaper Switch Start luminaires, withmuch lower power losses, but sizes below 20w canhave a low PF.
The chart below shows clearly the proportion oflosses to output wattage to be expected for a58 watt tube using a Switch Start versus HF ballast.
Thus a 58w HF luminaire is almost 20% moreefficient than the Switch Start variant, requiringconsiderably less energy to achieve ratedoutput wattage.
80
Total Watts / VA Requirement
Switch Start
Total VA Circuit Watts Rated Lamp Watts 58w
HF
70
60
60
50
40
30
20
10
0
50
40
30
20
10
0
System Selection
Far East Sales & Technical Support:Tel: +65 6720 8828, Fax: +65 6720 8780, email: [email protected]
Emergi-Lite emergency luminaires
Emergi-Lite offers a full range of luminaires andexit signs for use with Central Power Supplysystems. All luminaires include High Frequencycontrol gear for maximum efficiency and can beaddressed for use with the EMEX Test automatictesting solution for CPS systems.
Please contact you regional Emergi-Lite salesmanager for more information about our rangeof slave 230V luminaires.
Central power unit selectionEmergi-Lite EMEX Central Power Supply Systemsare dual rated to allow selection of an appropriatesystem to either commercial or ICEL ratings.
ICEL rating is derived by de-rating by 20% thecommercial system. In effect, these systems include20% spare capacity to provide the scheme designeropportunity for future revision, or expansion, ofthe scheme.
The tables right identify the most popular CPSsystems available from Emergi-Lite. Below areexample calculations based on the differingrequirements of High Frequency and Switch Startcontrol gear to provide guidance for yourown calculations.
Design examplesThese examples show how the same load usingdifferent control equipment can conclude in verydifferent CPS systems. The examples are based on a3 hour Single Phase system.
LuminaireType
PowerConsumption
Wattage Quantity
8w Linear T5 11.00 9.00 28
58w Linear 56.10 55.00 119
Total Power Consumption: Total Wattage:
(28 x 11.00) + (119 x 56.10)= 6983.90
(28 x 9.00) + (119 x 55.00)= 6797.00
+ 20% Additional Capacity (to comply with BS EN 50171):
= 8380.68 = 8156.40
LuminaireType
PowerConsumption
Wattage Quantity
8w Linear T5 13.80 12.00 28
58w Linear 79.30 69.00 119
Total Power Consumption: Total Wattage:
(28 x 13.80) + (119 x 79.30)= 9823.10
(28 x 12.00) + (119 x 69.00)= 8547.00
+ 20% Additional Capacity (to comply with BS EN 50171):
= 11787.72 = 10256.40
The difference between power consumption and wattage for the HighFrequency luminaires is less than 3%, indicating that a Unity PowerFactor system would best manage the emergency lighting scheme.
Having added 20% to comply with BS EN requirements, the commercialrating values for CPS systems are considered.
Following review of the tables right, CPS unit ELD8310.090 proves thelogical choice, as it provides up to 9000 VA / watts of power.
By comparison, if a 0.85 PF system was specified, the smallest systemavailable would be ELD9000.019, a 10,500 VA system, to ensuresufficient wattage is provided (up to 8,925 watts.)
The difference between power consumption and wattage for the SwitchStart luminaires is greater than 14%.
Having added 20% to comply with BS EN requirements, the commercialrating values for CPS systems are considered.
Following review of the tables right, either the 0.85 PF CPS unitELD9000.021 (15,000 VA / 12,750 watts) or Unity PF systemELD8310.120 (12,000 VA / 12,000 watts), is possible.
N.B.: When selecting luminaires, Switch Start luminaires are notcompatible with LTC addressable interfaces.
High Frequency control equipment load calculation Switch Start control equipment load calculation
1 Hour Single Phase 220 – 240V 50Hz (adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
1,500 1,250 1 ELD8110.015
3,000 2,500 1 ELD8110.030
4,500 3,750 1 ELD8110.045
6,000 5,000 1 ELD8110.060
7,500 6,250 2 ELD8110.075
9,000 7,500 2 ELD8110.090
10,500 8,750 2 ELD8110.105
12,000 10,000 2 ELD8110.120
15,000 12,500 2 ELD8110.150
18,000 15,000 3 ELD8110.180
21,000 17,500 3 ELD8110.210
24,000 20,000 3 ELD8110.240
3 Hour Single Phase 220 – 240V 50Hz (adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
1,500 1,250 1 ELD8310.015
3,000 2,500 1 ELD8310.030
4,500 3,750 2 ELD8310.045
6,000 5,000 2 ELD8310.060
7,500 6,250 2 ELD8310.075
9,000 7,500 3 ELD8310.090
10,500 8,750 3 ELD8310.105
12,000 10,000 3 ELD8310.120
13,500 11,250 3 ELD8310.135
15,000 12,500 4 ELD8310.150
16,500 13,750 4 ELD8310.165
18,000 15,000 4 ELD8310.180
19,500 16,250 4 ELD8310.195
21,000 17,500 5 ELD8310.210
22,500 18,750 5 ELD8310.225
24,000 20,000 5 ELD8310.240
3 Hour Three Phase 220 – 240V/380 – 415V 50Hz(adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
4,500 3,750 2 ELD8330.045
9,000 7,500 3 ELD8330.090
13,500 11,250 3 ELD8330.135
18,000 15,000 4 ELD8330.180
22,500 18,750 5 ELD8330.225
27,000 22,500 6 ELD8330.270
31,500 26,250 7 ELD8330.315
36,000 30,000 7 ELD8330.360
40,500 33,750 8 ELD8330.405
45,000 37,500 9 ELD8330.450
49,500 41,250 10 ELD8330.495
54,000 45,000 11 ELD8330.540
58,500 48,750 12 ELD8330.585
63,000 52,500 14 ELD8330.630
1 hour Single Phase 220 – 240V 50Hz (adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
1,500 / 1,275 1,250 / 1,060 1 ELD9000.001
3,000 / 2,550 2,500 / 2,125 1 ELD9000.002
4,500 / 3,825 3,750 / 3,188 1 ELD9000.003
6,000 / 5,100 5,000 / 4,250 1 ELD9000.004
7,500 / 6,375 6,250 / 5,310 1 ELD9000.005
9,000 / 7,650 7,500 / 6,375 1 ELD9000.006
10,500 / 8,925 8,750 / 7,430 2 ELD9000.007
12,000 / 10,200 10,000 / 8,500 2 ELD9000.008
15,000 / 12,750 12,500 / 10,625 2 ELD9000.009
18,000 / 15,300 15,000 / 12,750 2 ELD9000.010
21,000 / 17,850 17,500 / 14,875 3 ELD9000.011
24,000 / 20,400 20,000 / 17,000 3 ELD9000.012
3 hour Single Phase 220 – 240V 50Hz (adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
1,500 / 1,275 1,250 / 1,060 1 ELD9000.013
3,000 / 2,550 2,500 / 2,125 1 ELD9000.014
4,500 / 3,825 3,750 / 3,188 2 ELD9000.015
6,000 / 5,100 5,000 / 4,250 2 ELD9000.016
7,500 / 6,375 6,250 / 5,310 2 ELD9000.017
9,000 / 7,650 7,500 / 6,375 2 ELD9000.018
10,500 / 8,925 8,750 / 7,430 3 ELD9000.019
12,000 / 10,200 10,000 / 8,500 3 ELD9000.020
15,000 / 12,750 12,500 / 10,625 3 ELD9000.021
18,000 / 15,300 15,000 / 12,750 4 ELD9000.022
21,000 / 17,850 17,500 / 14,875 4 ELD9000.023
24,000 / 20,400 20,000 / 17,000 5 ELD9000.024
3 hour Three Phase 220 – 240V/380 – 415V 50Hz(adjustable)
Commercial ratingVA / watts
ICEL ratingVA / watts
CabinetQty.
PartNo.
27,000 / 22,950 22,900 / 19,500 6 ELD9000.090
36,000 / 30,600 30,600 / 26,000 7 ELD9000.091
45,000 / 38,250 38,200 / 32,400 8 ELD9000.092
54,000 / 45,900 45,900 / 39,000 10 ELD9000.093
63,000 / 53,550 53,500 / 45,400 10 ELD9000.094
These tables provide information on Emergi-Lite’smost popular AC/AC Central Power Supply systems.All systems are available with integral touch-screenfor EMEX Test automated testing software. For thisoption, simply add suffix /TS to the Part Number(i.e. ELD8310.030/TS.)
Larger systems, 2 hour duration systems, and 110V,50V & 24V CPS systems are available. If the requiredsystem size or duration is not shown here, pleasecontact Emergi-Lite to discuss your requirements.
UK Sales: Middle East Sales: Far East Sales:+44 (0)113 281 0600 +971 (0)4 609 1635 +65 6720 8828
Unity PF range Switch Start/0.85 PF range
The complete emergency lightingcentral system testing solution
EMEX Test is a highly flexible emergencylighting automated testing solution. With theability to support virtually any type of slave230V luminaire, including LED, EMEX Testaffords freedom of choice for engineers,consultants and end-users alike.
Emergency lighting regulations stipulate periodictesting of emergency lighting systems to ensurecorrect operation in the event of a mains failure,with records needing to be kept for all testsconducted. This task is now the responsibility ofthe building owner/occupier. Emergency lightingtesting can be a highly disruptive exercise, withmanual record keeping a laborious task. EMEX Testhas been designed to provide the ideal solution forluminaire testing.
EMEX Test delivers highly effective testing ofemergency lighting lamps, control gear and centralpower supply all at the touch of a button. Periodicluminaire tests can be scheduled at times ofminimum disruption, with test reports generatedand stored automatically. Moreover, periodictesting can be configured to comply with therelevant BS EN and NFPA standards.
Multiple static inverter systems can be networkedto a single control PC. Building management systemcommunication, including BACNET and LONWORKSformats, can be linked to the system. Networknodes enable engineers to access test reports andsystem controls using a laptop PC from any point onthe data cable.
Comprehensive, flexible, effective – EMEX Test isthe automated testing solution for CPS systems.To discover more about the benefits of specifyingEMEX Test, please contact your regionalEmergi-Lite sales manager.
EMEX Test components
MXC substation MXT data repeater MXD4 substation
LTC addressable interface
Part No. Description
ELD9500.912 EMEX Test software package
ELD9500.030 MXC substation
ELD9500.016 MXD4 4-way addressable substation
ELD9500.120 MXT100 data repeater
ELD9500.121 MXT200 data repeater
ELD9500.036 LTC addressable interface
ELD9500.039 EMEX Test input node
ELD9500.038 EMEX Test remote test input package
ELD9500.910 MXKP station adapter kit
For full product details please refer to our EMEX Central Power Supply Catalogue.
The content of this Thomas & Betts publication has been carefully checked for accuracy at the time of print. However,Thomas & Betts doesn’t give any warranty of any kind, express or implied, in this respect and shall not be liable for any lossor damage that may result from any use or as a consequence of any inaccuracies in or any omissions from the informationwhich it may contain. E&OE.
Copyright Thomas & Betts 2009. Copyright in these pages is owned by Thomas & Betts except where otherwise indicated.No part of this publication may be reproduced, copied or transmitted in any form or by any means, without our priorwritten permission. Images, trade marks, brands, designs and technology are also protected by other intellectual propertyrights and may not be reproduced or appropriated in any manner without written permission of their respective owners.Thomas & Betts reserves the right to change and improve any product specifications or other mentions in the catalogue atits own discretion and at any time. These conditions of use are governed by the laws of the Netherlands and the courts ofAmsterdam shall have exclusive jurisdiction in any dispute.
EMEX8PP1-0409
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Thomas & Betts Limited
Emergi-Lite Safety Systems
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HQ ASSESSED TO BS EN ISO9001: 2000 FORTHE MANAGEMENT OF EMERGENCY
LIGHTING AND FIRE DETECTIONEQUIPMENT AND THE MODIFICATION OF
MAINS LUMINAIRES FOR EMERGENCYLIGHTING APPLICATIONS
Cert no: FM09470
A member of theLIGHTING INDUSTRY FEDERATION
