GE G8.5 User's Manual
Contents
1. 150 3000 25 20 50 75 110 150W 220 240 0 69 50 60 gt 0 95 198 264 lt 2 5 150 3000 25 20 50 80 110 If a hot lamp or no lamp is detected the ballast will attempt to start the lamp after one minute if not successful further attempts are made up to a maximum of 4 times in 5 minute cycles then if not successful the ballast will shut down The ballast is reset automatically by a supply interruption Typical value if cable capacitance is below the specifi ed limit Dimension BLS E 20W BLS E 20W CMH CMHSMP BLS E 35W CMH 101 5 yo on r ee oe e gt ga 112 5 a 4 2 98 N E 123 A B 126 BLS E 70W CMH 5 2 aie 73 90 120 a 137 z BLS E 20W CMH R BLS E 35W CMH R BLS E 70W CMH R 126 5 2 120 177 Circuitry Wire cross section 0 75 2 5 mm BLS E 20W CMH BLS E 35W CMH BLS E 20W CMH R BLS E 35W CMH R BLS E 70W CMH BLS E 70W CMH R BLS E 150W CMH BLS E 150W CMH R 126 BLS E 150W CMH BLS E 150W CMH R 121 91 45 5 s21 73 The ballasts comply with the relevant parts of the following standards RFI suppression EN 55015 Harmonics EN 61000 3 2 Immunity2. 530 580 630 530 580 630 Wavelength nm Wavelength nm of Initial j 3 Distribution of luminous intensity Burning time thousand hours The following diagrams show polar light intensity curves for lamp base up orientation Lumen Maintenance 35W G8 5 3000K Lumen Maintenance 35W G8 5 4200K Vertical plane polar intensity curve Imax 170 13 cd at 100 Vertical plane polar intensity curve Imax 170 13 cd at 100 135 150 165 cd 165 150 135 225 210 195 180 165 150 135 of Initial of Initial 4 6 8 6 8 10 Burning time thousand hours Burning time thousand hours Lumen Maintenance 70W G8 5 3000K Lumen Maintenance 70W G8 5 4200K 5 5 5D 2 u ra O O o o z z 6 8 10 6 8 10 Burning time thousand hours Burning time thousand hours Warm up characteristics Typical Warm up characteristics During the warm up period immediately after starting me lamp temperature increases rapidly evaporating 100 mercury and metal halide dose in the arc tube Lamp electrical characteristics and light output stabilise in less than 4 minutes During this period light output increases from zero to full output and colour approaches the final visual effect as each metallic element becomes vaporised 80 60 40 ee Lamp current Light output Percentage of final value 20 0 Time from switch on minutes Supply voltage sensitivity Supply line voltage to con
3. CMH 35W G8 5 3000K and 4200K 100 3 2 gt 5 wn a E 5 l o z Burning times thousand hours CMH 70W G8 5 3000K and 4200K 100 Lamp survival 6 8 Burning times thousand hours Lumen maintenance Special power distribution Lumen maintenance graphs show light output performance through life for statistically representative batches of lamps Spectral Power Distribution curves are given in the following diagram operated under controlled nominal conditions with a 7 hours per start switching cycle Acommon characteristic for all metal halide lamps is a reduction in light output and a slight increase in power consumption through life Consequently there is an economic life at which lamp efficacy falls to a level when lamps should be replaced to restore design illumination levels Where a quantity of lamps are installed within an area consideration should given to a group lamp replacement programme to maintain uniform illumination levels Curves represent operating conditions for a 7 hours per start switching cycle but less Spectral Power Distribution 3000K Spectral Power Distribution 4200K frequent switching will improve lumen maintenance Note The representative curves are shown for Vertical Base Up lamp orientation unless otherwise specified Lumen maintenance performance is significantly improved in the Horizontal burning position x x E z lt lt Lumen Maintenance 20W G8 5 3000K
4. Index Luminous efficacy Base Ra Im W Starting and Warm up Characteristics Time to start at 25 C Time to start Cold box test at 30 C Hot restart time Warm up time for 90 lumens Typical values actual values are ballast and ignitor dependent Through life Performance Lumen maintenance at 40 rated life mean lumens Average rated life Life data measured in Vertical Base up position Performance can be greatly increased in horizontal position sec sec min min h Maximum Operating temperatures Maximum allowed bulb temperature horizontal orientation thermocouple attached above burner Maximum pinch temperature vertical base up orientation K ye 20W 3000K 39858 1650 3000 0 435 0 400 80 85 lt 2 lt 2 lt 3 Le 68 12000 500 300 35W 3000K Plus 43237 3400 3000 0 435 0 400 84 86 lt 2 lt 2 lt 3 1 2 68 15000 500 300 35W 4200K 26348 150 100 150 4200 0 475 0 370 88 80 G8 5 lt 2 lt 2 15 85 12000 500 300 70W 3000K Plus 43274 6200 3000 0 435 0 400 80 86 lt 2 lt 2 15 71 15000 550 300 70W 4200K 26349 6000 4200 0 475 0 370 90 83 lt 2 lt 2 15 11 15000 550 300 The specification provides typical performance data for 35W amp 70W operating from a 50Hz mains sinewave supply at nominal power Actual v
5. in the circuit This safety device will protect the ballast and fixture from overheating damage at lamp end of life should rectification occur due to electrode imbalance or arc tube failure The IEC61167 requirement applies to both ceramic and quartz arc tube metal halide lamps of the UV A UV B and UV C spectral ranges as well as material temperatures when designing luminaires ConstantColor CMH G8 5 lamps are compatible with a list of approved ballasts contact your GE representative for more information Stay magnetic field from conventional ballast At the design stage for fixtures incorporating the control gear careful consideration should be given to the physical layout of the lamp and ballast The relative positions and distance between lamp and ballast can adversely affect lamp performance and drastically reduce lamp life survival Conventional magnetic ballasts can produce a stray magnetic field and if the lamp is placed within this field bowing of the arc in the discharge tube can occur Since ceramic is a very rigid material severe arc bowing can cause high thermal stress leading to cracking or rupture of the arc tube resulting in failure of the lamp early in life Such bowing of the arc can also affect the quartz arc tube in conventional metal halide lamps but cracking or rupture failure is less likely since quartz softens at the resulting higher wall temperature causing the arc tube to become swollen Excessive swelling of a quar
6. of electronic control gear should be considered where visual comfort and performance is critical Suitable electronic ballasts for ConstantColor CMH typically provide square wave operation in the range 70 200Hz eliminating perceptible flicker Lamp end of life conditions The principal end of life failure mechanism for CMH lamps is arc tube leakage into the outer jacket High operating temperature Inside the arc tube causes metal halide dose material to gradually corrode through the ceramic arc tube wall eventually resulting at normal end of life in leakage of the filling gas and dose Arc tube leakage into the outer jacket can be observed by a sudden and significant lumen drop and a perceptible color change usually towards green The above situation is often accompanied by the so called rectification phenomena This occurs where a discharge is established between two mount frame parts of different material and or mass causing asymmetry in the electrical characteristic of the resulting discharge current Rectification can lead to overheating of the ballast therefore conventional magnetic ballasts must conform to requirements of the IEC61167 lamp standard by incorporating protection to maintain safety and prevent damage It is good practice when lamps are operated continuously 24 hours per day 7 days per week to introduce switching once every 24 hours Lamps with one electrode failing often will not restart and can therefore be easilly dete
7. partial rectifier and a conventional magnetic ballast may allow higher than the normal current to flow At switch on the short duration surge current drawn by the power factor correction capacitor can be high In order to prevent nuisance fuse failure at initial switch on the fuse rating must take these Number of Lamps 1 2 3 4 5 6 transient conditions into account A separate technical 35W Fuse Rating A i data sheet providing additional explanation and ET a a information for the fusing of High Intensity Discharge PA 150W Fuse Rating A 4 4 4 6 6 10 lighting circuits is available from GE Lighting 15
8. 40 220 240 220 240 220 240 220 240 Description BLS E 20W CMHSMP BLS E 20W CMH BLS E 20W CMH R BLS E 35W CMH BLS E 35W CMH R BLS E 70W CMH BLS E 70W CMH R BLS E 150W CMH BLS E 150W CMH R 20W Im W 72 Im 1700 W 20 Im W 85 V 70 125 Mounting Integral Integral Remote Integral Remote Integral Remote Integral Remote Weight 110g 190g 230g 215g 2309 300 g 310g 430g 445g 35W 43 79 3400 39 87 702425 Pack Qty Product Code 12 te 12 ie 12 12 12 IZ I 70W 78 79 6200 ve 86 T0125 Data shown relates to 3000K products Please see lamp data sheets for performance of equivalent 4200K rated products 12 42387 13032 13034 13035 13036 13040 13047 13050 13053 150W 159 88 14000 146 96 70 125 Operating Characteristics Mains Voltage Mains Current Mains Frequency Power Factor Allowed Mains Voltage Range Ignition Voltage Lamp Operating Frequency Max Cable Capacitance Max Lamp Distance Ambient Temperature Range Maximum Case Temperature Thermal Cut off on PCB Hz V kV Hz pF m CC ne C 20W 220 240 0 19 50 gt 0 55 198 264 lt 3 5 153 1000 2 20 50 80 110 20W 220 240 0 10 50 60 gt 0 95 198 264 lt 2 5 150 1000 10 20 50 75 110 35W 220 240 0 18 50 60 gt 0 95 198 264 lt 2 5 150 3000 co 20 50 3 110 7OW 220 240 0 33 50 60 gt 0 95 198 264 lt 2 5
9. EN 61547 Safety EN 60926 EN 60928 EN 61347 Performance EN 60927 EN 60929 15 Superimposed ignitors In many installations Ceramic Metal Halide lamps are operated from a conventional magnetic ballast in conjunction with a superimposed ignitor These ignitors generate starting pulses independently from the ballast and should be placed close to the lamp preferably within the luminaire Wiring between ignitor and lamp should have a maximum capacitance to earth of 100pF length equivalent to less than 1 Metre contact ignitor manufacturer for details of specific ignitor types A typical circuit diagram is shown Suitable Ignitors Typical superimposed ignitor circuit Phase Ballast TI PFC Capacitor B Ignitor Lp N Que Neutral Suitable high energy superimposed ignitors recommended by control gear manufacturers are listed below Check Owith suppliers for their current range of ignitors Lamp re starting under warm lamp conditions can take up to 15 minutes Suitable ignitors to achieve a warm restart of less than 15 minutes include the following however the list may not be fully inclusive Maker APF SP23 BAG Turgi NI 150 SE NI 150 SE TM20 ERC AZA 1 8 AZP 1 8 Helvar L 150 LSI 150T20 Magnetek May amp Christe ZG 0 5 ZG 20 Parry Parmer PAV400 PCX400 Philips SU20S Thorn G53459 G53498 Tridonic ZRM 1 8 ES B Z
10. RM 2 5 ES B Vossloh Schwabe Z 150 Z 150K 14 Products MZN 150 SE C AZ P 1 8 T3 ZG 2 0D PXE100 G53476 ZRM 4 5 ES B Z 150 K A10 NI 400 LE 3 5 A NI 400 LE 3 5 A TM20 AZ P 1 8 T3 AZ P 3 0 T3 ZG 4 5D G53504 TB ZRM 6 ES B ZRM 2 5 ES B Z 150 K A10 Z 250 Impulser ignitors Typical impulser ignitor circuit Impulser type ignitors use the ballast winding as a pulse Ballast TL a transformer and can only be used with a matched ballast Always check with the ballast and ignitor supplier that components are compatible Longer cable lengths between ballast amp ignitor and the lamp are possible due to the lower pulse frequency generated giving greater flexibility for remote control gear applications Ignitor pulse characteristics 4 at the lamp must however comply with specified minimum Neutral values for ConstantColor CMH lamps under all conditions PFC Capacitor Ignitor Other ignitor related considerations Timed or Cut out Ignitors The use of a timed or cut out ignitor is not a specific requirement for ConstantColor CMH lamps but it is a good optional safety feature worth considering to prolong ignitor component life The timed on period must be adequate to allow lamps to cool and restart as described below A period of 10 15 minutes continuous or intermittent operation is recommended before
11. Safety warnings The use of these products requires awareness of the following safety issues Warning e Risk of electric shock isolate from power supply before changing lamp e Strong magnetic fields may impair lamp performance and worst case can lead to lamps shattering Use in enclosed fixtures to avoid the following e Risk of fire e A damaged lamp emits UV radiation which may cause eye skin injury e Unexpected lamp shattering may cause injury fire or property damage Caution e Risk of burn when handling hot lamp e Lamp may shatter and cause injury if broken e Arc tube fill gas contain Kr 85 Always follow the supplied lamp operation and handling instructions GE Lighting is constantly developing and improving its products For this reason all product descriptions in this brochure are intended as a general guide and we may change specifications time to time in the interest of product development without prior notification or public an nouncement All descriptions in this publication present only general particulars of the goods to which they refer and shall not form part of any www ge com eu lighting and General Electric are both registered trademarks contract Data in this guide has been obtained in controlled experimental conditions However GE Lighting cannot accept any liability arising of the General Electric Company from the reliance on such data to the extent permitted by law CMH Single Ended G8 5 Product Informatio
12. V can be quantified by a Damage Factor and a Risk of Fading The risk of fading Is simply the numerical product of the illuminance exposure time and damage factor due to the light source Finally the selection of luminaire materials should take into consideration the UV emission Current UV reduction types on the market are optimised for UV safety of human eye and skin exposure However luminaire materials may have different wavelength dependent response functions Designers must take account of emission in each of the UV A UV B and UV C spectral ranges as well as material temperatures when designing luminaires Typical values for UV A UV B and UV C range radiation can be found in the table below 20W 35W 35W 70W 70W Lamp type 3000K 3000K 4200K 3000K 4200K UV PET Performance uW cm 500LUX UVC 220 280nm 0 036 0 0367 0 020 0 014 0 011 UVB 280 315nm 0 049 0 0467 0 040 0 006 0 009 UVA 315 400nm 10 170 10 360 113 870 6 980 9 800 UVC UVB 10 720 0 786 0 509 2 365 1321 UVB UVA 0 005 0 005 0 003 0 001 0 0099 Eeff 0 052 0 034 0 015 0 014 PET h 10 16 15 26 54 64 Risk Group IESNA RP 27 3 96 Exempt Exempt Exempt Exempt Exempt 10 Information on luminaire design Ballasts ConstantColor CMH operate from the same type of ballast as conventional quartz technology metal halide lamps of the same nominal power IEC 61167 MH lamp standard and IEC62035 HID lamp safety standard specify use of ballast thermal protection or equivalent protection device
13. alues depend on ballast supply voltage and application 20W to be used only with an electronic ballast see later for additional notes on electronic ballast requirements Temperatures above which lamp performance or reliability is impaired Additionally voltage rise when operated in luminaire should not exceed 5V Photometric characteristics refer to lamp performance after 100hrs burning Dimension X lt 2 We O LCL 52 1 0mm Lamp life Life survival graphs are shown for statistically representative batches of lamps operated under controlled nominal conditions with a 7 hours per start switching cycle Declared lamp life is the median value i e when 50 of lamps from a large sample batch would have failed Lamp life in service is affected by a number of parameters including supply voltage variation switching cycle operating position ballast impedance tolerance luminaire design and mechanical vibration The information provided is intended to be a practical guide for comparison with other lamp types Determination of lamp replacement schedules will depend upon relative costs of spot or group replacement and acceptable reduction in lighting levels Note Representative curves are shown for Vertical Base Up lamp orientation unless otherwise specified Life performance is significantly increased in the Horizontal burning position CMH 20W G8 5 3000K 100 Lamp survival Burning times thousand hours
14. cted and replaced Lumen depreciation All metal halide lamps experience a reduction in light output and slight increase in power consumption through life Consequently there is an economic life when the efficacy of lamps fall to a level at which is advisable to replace lamps and restore illumination levels Where a number of lamps are used within the same area it may be well worth considering a group lamp replacement programme to ensure uniform output from all the lamps End of life cycling A condition can exist at end of life whereby lamp voltage rises to a value exceeding the voltage supplied by the control gear In such a case the lamp extinguishes and on cooling restarts when the required ignition voltage falls to the actual pulse voltage provided by the ignitor During subsequent warm up the lamp voltage will again increase causing extinction This condition is known as end of life cycling Normally cycling is an indication that lamp end of life has been reached but it can also occur when lamps are operated above their recommended temperature Lamp voltage at 100 hours life should not increase by more than 5V when operating in the luminaire when compared to the same lamp operating in free air A good luminaire design will limit lamp voltage rise to 3V It is good practice to replace lamps that have reached end of life as soon as possible after failure to minimise electrical and thermal stress on ignitor internal components The use of a
15. efficacy e Up to 15 000 Hr life e UV control e Colour temperatures 3000K 4200K GE imagination at work QQP 8 WORLDWIDE PARTNER ConstantColor CMH DATASHEET Single ended format Single ended Ceramic Metal Halide lamps are designed to provide symmetrical beam distribution using the axial con figuration of the discharge arc A variety of beam angles are possible and adjustable beam control can be built into the luminaire This compact lamp shape enables luminaire size to be minimised and the bi pin lamp base enables easy changing with front access Applications areas e Retail e Offices e Stage Studio e Architectural lighting e Display Cabinet e Hotels Specification summary Ordering Information Description Wattage Colour Product Code CMH20 T UVC U 830 G8 5 Plus 20 3000K 39858 CMH35 T UVC U 830 G8 5 Plus 55 3000K 43273 CMH35 TC UVC U 842 G8 5 55 4200K 26348 CMH70 TC UVC U 830 G8 5 Plus 70 3000K 43274 CMH70 T UVC U 942 G8 5 70 4200K 26349 20W 35W 35W 70W 70W General Units 3000K 3000K Plus 4200K 3000K Plus 4200K Product code 39858 43273 26348 43274 26349 Nominal Wattage W 20 35 35 70 70 Format Single ended Bulb type T4 5 T4 5 T4 5 T4 5 T4 5 Bulb diameter mm 14 5 14 5 14 5 14 5 145 Bulb material UVC Quartz Bulb finish Clear Arc Gap mm 3 355 4 65 4 3 7 4 5 5 Base G8 5 G8 5 G8 5 G8 5 G8 5 Operating Conditions Burning position Universal Luminaire characteristics Enclosed N
16. n for OEMs 17th July 2007 GE Consumer amp Industrial Lighting Ceramic Metal Halide Lamps Single Ended G8 5 Product Information Lamp technology ConstantColor CMH lamps combine HPS technology providing stability efficiency amp uniformity and Metal Halide Technology providing bright white quality light to produce highly efficient light sources with good colour rendering and consistent colour performance through life This is achieved by using the ceramic arc tube material from the Lucalox lamp which minimises the chemical changes inside the lamp through life When combined with the halide doses used in Arcstream Metal Halide lamps then the quality and stability of the dose maintains the colour consistency Hence the name ConstantColor CMH Metal halide lamps traditionally made with quartz arc tubes are prone to colour shift through life and lamp to lamp colour variation Some of the dose e g sodium an important component of metal halide lamps can migrate through quartz to cause colour shift and loss of light through life The ceramic arc tube resists this material loss can be manufactured to tighter tolerances and withstands a higher temperature to provide a more constant colour Features e Consistent colour over life e Good colour uniformity lamp to lamp e Bright light in a very compact size e Excellent colour rendition e Improved reliability due to 3 part design e Up to 97 Lumen per Watt LPW
17. otes 1 Lamp voltage in the luminaire should not increase by more than 5V when compared to lamp voltage in free air 2 Ballast protection required according to IEC61167 3 35W amp 70W data is based on operation from a conventional magnetic ballast Improved performance can be achieved using an electronic ballast 4 35W 4200K CMH lamp is based on operation from an electronic ballast Lamps can run on conventional ballast with a small reduction in performance 5 20W designed for operation only from an electronic ballast Electrical Characteristics Lamp power W 20 39 39 72 72 Lamp voltage V 90 90 90 90 90 Lamp current A 0 226 0 50 0 50 0 98 0 98 Max Ignition Voltage kV fee 5 0 50 5 0 5 0 Min Ignition Voltage kV nee 55 5 55 55 er EH On YOO 0e ee 90 Mox 90 Max 90 Max 90 Max of rated input voltage The specification provides typical performance data for 35W amp 70W operating from a 50Hz mains sinewave supply at nominal power Actual values depend on ballast supply voltage and application 20W to be used only with an electronic ballast See additional notes on electronic ballast requirements for 20W Specification summary Photometric Characteristics Product code 100 hrs Lumens Typical Lumen change with burning position vertical to horizontal Typical voltage change with burning position vertical to horizontal Correlated Colour Temperature Chromaticity X Chromaticity Y Colour Rendering
18. s have been introduced to complement the 20 35 70 and 150W ConstantColor Ceramic Metal Halide lamps Power controlled electronic ballasts suitable for operation of Ceramic Metal Halide lamps are available from various gear manufacturers Advantages are e Good regulation against supply voltage variation e Improved lamp colour consistency e Elimination of lamp flicker e Reduced weight of control gear e Reduced electrical power losses e Ballast noise reduced eliminated e Single piece compact unit e Reduced wiring complexity in the luminaire Features e Integral version with open terminals for embodiment into luminaire e Remote version with terminal cover and cable strain relief for location outside the luminaire e 50 000 hours service life under the specified conditions e Reduced power consumption compared to electromagnetic circuits e Reduced component count and simplified wiring compared to electromagnetic circuits e Rapid and controlled power run up e Lamp life maximised by square wave current and constant lamp power e Excellent lamp colour stability throughout life e Automatic lamp failure shut down e Timed restart after mains voltage interruption e Immune to mains voltage variations General Information Watts 20 20 20 35 35 70 70 150 150 System Performance W LAD System Power System Lumens Lamp Power Lamp Efficacy Lamp Voltage Range Volts 220 240 220 240 220 240 220 240 220 2
19. the ignitor automatically switches off Timed ignitors specifically offered for High Pressure Sodium lamps where the period of operation is less than 5 minutes are not suitable for ConstantColor CMH lamps Hot Re strike All ratings re strike within 15 minutes following a short interruption in the supply Actual re strike time is determined by the ignitor type pulse voltage and cooling rate of the lamp Instant hot re strike is only possible using a suitable very high voltage ignitor and a double ended lamp GE Lighting should be consulted when considering use of an instant hot re striking system Warm Re starting The combined characteristics of ceramic arc tube material and vacuum outer jacket result in ConstantColor CMH lamps cooling relatively slowly It is possible with low energy ignitors to reach the required breakdown voltage but not create a full thermionic discharge Under these conditions the lamp can remain very warm and be prevented from cooling to a temperature at which the arc can be re established To avoid this turn off the power supply for approximately fifteen minutes or change to a suitable high energy ignitor from the list given in the superimposed ignitor section Fusing Recommendations Fusing of individual fixtures is recommended in order to provide added protection for end of life conditions when lamp rectification can also occur For a very short period immediately after switch on all discharge lamps can act as a
20. timed or cut out ignitor is not a specific requirement for ConstantColor CMH lamps but is worth considering as a good optional safety feature which also prolongs the life of ignitor internal components lamp holder contact surfaces and fixture wiring The operating period of a timed cut out ignitor must be adequate to allow lamps to cool and restart A period of 10 to 15 minutes continuous or intermittent operation is recommended before the ignitor automatically switches off Timed cut out ignitors specifically offered for High Pressure Sodium lamps where the period of operation is less than 5 minutes are not suitable for ConstantColor CMH lamps UV and damage to sensitive materials The wall of the bulb which is produced with specially developed UV Control material absorbs potentially harmful high energy UV radiation emitted by the ceramic arc tube The use of UV control material together with an optically neutral front glass cover allows the lamp to significantly reduce the risk of discolouration or fading of products When illuminating light sensitive materials or at high light levels additional UV filtration is recommended Luminaires should not be used if the front glass is broken or missing It is recommended that a safety interlock switch is incorporated into the luminaire to prevent operation when the luminaire is opened Although PET determines limits of human exposure to lamp UV the risk of fading of mechanise due to U
21. tz arc tube can however also result in cracking or rupture failure In fixtures where the ballast is necessarily placed close to the lamp use of magnetic shielding is essential Another solution is to use an electronic ballast which eliminates the need for an ignitor simplifies wiring reduces the risk of stray magnetic field and eliminates light output flicker Electronic ballast operation Circuit diagram electronic ballast CMH 20W is designed only for operation from electronic gear This provides many advantages LH Lamp holder E Electronic Gear e Flicker free light output e Well controlled electronic ignition process e Simple wiring for fixtures due to elimination of ignitor and PFC capacitor e Reduces fixture weight e Automatic sensing of failed lamps and shutdown e Lower overall system power consumption e On further details of operating gear please refer to GE Containment requirement ConstantColor CMH lamps operate above atmospheric pressure therefore a very small risk exists that the lamp may shatter when the end of life is reached Although this failure mode is unlikely containment of shattered particles is required as prescribed by IEC 61167 ConstantColor CMH lamps should only be operated in a suitable enclosed luminaire with front cover glass capable of containing the fragments of a lamp should it shatter 11 Control gear and accessories Electronic Ballasts A range of GE electronic ballast
22. ventional magnetic ballast control gear should be as close to the rated nominal value as possible Lamps will start and operate at 10 below rated 130 supply voltage but this should not be considered as a normal ay operating condition In order to maximise lamp survival Lumens lumen maintenance and colour uniformity supply voltage and rated ballast voltage should be within 3 Supply variations of 5 are permissible for short periods only Where large supply voltage variation is likely to occur use of electronic control gear which is designed to function correctly for a voltage range typically 200 250V should be considered CMH Lamp performance as a function of supply voltage on a 220V Reference Ballast CMH Lamp performance as a function of supply voltage on an electronic ballast Dimming In certain cases dimming may be acceptable subject to further testing Contact your GE representative for more information Large changes in lamp power alter the thermal characteristics of the lamp resulting in lamp colour shift and possible reduction in lamp through life survival Flicker When ConstantColor CMH lamps are operated from a conventional magnetic ballast there will be 50Hz line frequency light output flicker typically of 1 5 in common with all other discharge lamps Noticeably lower flicker levels occur when lamps are operated horizontally Flicker levels of 1 5 do not normally cause concern to the end user but use
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