GE Lighting ConstantColor CMH MR16 Reflector Ceramic Metal Halide Lamps W and 35W DATA SHEET Product information ConstantColor CMH lamps combine HPS technology (providing stability, efficiency & 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 TM lamp, which minimises the chemical changes inside the lamp through life. GE has now miniaturized this technology resulting in the CMH Precise TM MR16, highly efficient & 35 Watt lamps with the light quality and colour stability associated with Ceramic Metal Halide, in a size comparable to tungsten halogen reflector lamps, thus offering new energy saving options to the lighting designer and end user. Features Consistent colour over life Excellent colour uniformity lamp to lamp Bright light in a very compact size Excellent colour rendition High reliability due to 3 part ceramic design Up to 56 beam Lumens per Watt (LPW) efficacy Long Life UV control 35W available in two colour temperatures Robust GX1 base Application areas Commercial areas / city beautification / architectural
Specification summary Watts Operating Position Length [mm] Order Code Cap / Base Colour CBCP [cd] Rated Average Life [Hr] Pack Qty Product Code U 5 CMH/MR16/UVC/83/GX1/SP GX1 83 9 1 1 44 U 5 CMH/MR16/UVC/83/GX1/FL GX1 83 9 1 1 441 U 5 CMH/MR16/UVC/83/GX1/WFL GX1 83 15 1 1 4691 35 U 5 CMH35/MR16/UVC/93/GX1/SP GX1 93 16 1* 1 88658 35 U 5 CMH35/MR16/UVC/93/GX1/FL GX1 93 55 1* 1 88659 35 U 5 CMH35/MR16/UVC/93/GX1/WFL GX1 93 3 1* 1 8866 35 U 5 CMH35/MR16/UVC/94/GX1/SP GX1 94 16 1* 1 88661 35 U 5 CMH35/MR16/UVC/94/GX1/FL GX1 94 55 1* 1 8866 35 U 5 CMH35/MR16/UVC/94/GX1/WFL GX1 94 3 1* 1 88663 * Initial rating at time of launch. Testing continues to establish final design life. General Product Code 44 441 4691 88658 88659 8866 88661 8866 88663 Nominal Wattage [W] 35 35 35 35 35 35 Format MR16 MR16 MR16 MR16 MR16 MR16 MR16 MR16 MR16 Bulb Type MR16 MR16 MR16 MR16 MR16 MR16 MR16 MR16 MR16 Bulb Diameter [mm] 51 51 51 51 51 51 51 51 51 Bulb Material Bulb Finish Aluminized Aluminized Aluminized Aluminized Aluminized Aluminized Aluminized Aluminized Aluminized Operating Conditions Burning Position Universal Universal Universal Universal Universal Universal Universal Universal Universal Luminaire Open Open Open Open Open Open Open Open Open Electrical Characteristics Power [W] 39 39 39 39 39 39 Voltage [V] 95 95 95 9 9 9 9 9 9 Current [A].1.1.1.4.4.4.4.4.4 Max Ignition Voltage [kv] 4 4 4 5 5 5 5 5 5 Min Ignition Voltage [kv] 3 3 3 3 3 3 3 3 3 Extinction Voltage [%] 8 8 8 9 9 9 9 9 9 Photometric characteristics Beam Angle 1 o Spot 5 o Flood 4 o Wide Flood 1 o Spot 5 o Flood 4 o Wide Flood 1 o Spot 5 o Flood 4 o Wide Flood CBCP 9 9 15 16 55 3 16 55 3 Lumens [L] 1 1 1 CCT [K] 3 3 3 3 3 3 4 4 4 CCx.431.431.431.444.444.444.383.383.383 CCy.43.43.43.41.41.41.37.37.37 CRI [Ra] 81 81 81 9 9 9 9 9 9 Luminous Efficacy [LpW] 5 5 5 56 56 56 56 56 56 Starting and Warm-up Characteristics Time to Start @ 1C [Sec] <5 <5 <5 <5 <5 <5 <5 <5 <5 Time to Start @ -15C [Sec] <15 <15 <15 <15 <15 <15 <15 <15 <15 Hot Restart Time [Min] <4 <4 <4 <1 <1 <1 <6.5 <6.5 <6.5 Warm-up to Time to 9% Lumen Output [Min] Maximum Operating Conditions < < < < < < < < < Max Bulb Temperature 1 [ºC] 3 3 3 3 3 3 Max Base Temperature [ºC] 3 3 3 3 3 3 1 Measured at centre of MR16 lens, in vertical base-up position Measured on 5mm GX1 ceramic cap rim, at transition to 3mm
Dimensions B C D A Monogram position A Length (max) [mm] 5 B Diameter (max) [mm] 51 C (max) [mm] D (max) [mm] 14 Spectral power distribution Spectral power distribution curves are given in the following diagrams. Spectral power distribution CMH MR16 W 83 Spectral power distribution CMH MR16 35W 93 38 4 4 44 46 48 5 5 54 56 58 6 6 64 66 68 7 7 74 76 Relative Intensity Spectral power distribution CMH MR16 35W 94 38 4 4 44 46 48 5 5 54 56 58 6 6 64 66 68 7 7 74 76 38 4 4 44 46 48 5 5 54 56 58 6 6 64 66 68 7 7 74 76 3
Distribution of lumionous intensity The following diagrams show polar light intensity curves and beam diagrams for vertical base-up orientation CMH MR16 W SP 9 1 3 4 5 5% Max 6 7 8 9 1 1% Max 11 1 CMH MR16 W FL 4 9 6 8 1 1 14 5% Max 16 18 4 6 8 1% Max 3 3 4 6 8 CMH MR16 W WFL 5% Max 1% Max 1 1 14 16 18 9 CMH MR16 35W 93 SP CMH MR16 35W 93 FL CMH MR16 35W 93 WFL 1 3 4 5 6 7 8 9 1 11 1 13 5% Max 9 5 1 15 5 3 35 4 45 5% Max 9 4 6 8 1 1 14 16 18 4 5% Max 9 14 5 6 15 16 17 18 1% Max 55 6 65 1% Max 8 3 3 34 1% Max CMH MR16 35W 94 SP CMH MR16 35W 94 FL CMH MR16 35W 94 WFL 1 3 9 5 1 9 4 6 9 4 5 6 7 8 9 1 11 1 13 5% Max 15 5 3 35 4 45 5% Max 8 1 1 14 16 18 4 6 5% Max 14 5 8 15 16 17 55 6 1% Max 3 3 34 1% Max 18 65 4
Beam diagrams CMH/MR16/UVC/83/GX1/SP CMH/MR16/UVC/83/GX1/FL Degrees Nominal beam angle degrees = 1.7 Degrees Nominal beam angle degrees = 6.3 47744 11936 535 984 191 136 974 746 589 477.5 1.. 3. 4. 5..94.188.8.376.469.563.657.751.845.939 1364 366.5.33 145 1..467 816.7 53..934 363 1.167 67 3. 1.4 4 1.634 161 4. 1.867 131 5..11.334 Diameter.939m Diameter.334m CMH/MR16/UVC/83/GX1/WFL CMH35/MR16/UVC/93/GX1/SP Degrees Nominal beam angle degrees = 41.9 Degrees Nominal beam angle degrees = 1 674 1685.5.383 6898 174.5.19 749 1..765 7566 1..18 41 1.148 456 1.37 7. 3 74. 1.437 187 1.913 189 46 138 3..96 139 3..655 15.678 164.764 83 4. 3.61 841 4..873 67 3.443 681.98 5. 3.86 5. 1.9 Diameter 3.86m Diameter 1.9m CMH35/MR16/UVC/93/GX1/FL CMH35/MR16/UVC/93/GX1/WFL Degrees Nominal beam angle degrees = 8.1 Degrees Nominal beam angle degrees = 41.9 4116 69.5.5 13193 398.5.383 68 1..5 1466 1..766 157.751 85 1.149 965. 1.1 58. 3 67 1.51 366 1.915 49 3. 1 69 3..98 377 1.75 6.68 98 4.. 163 4. 3.63 41.5 13 3.446 5. 5. 3.89 Diameter m Diameter 3.89m 5
CMH35/MR16/UVC/94/GX1/SP CMH35/MR16/UVC/94/GX1/FL Degrees Nominal beam angle degrees = 1.9 Degrees Nominal beam angle degrees = 8.7 6949 17373 771 4343 78 193 1418 186 858 695.5 1.. 3. 4. 5..113.6.339.45.565.678.791.94.17 1.13 4669 6167 741 154 987 685 53 385 35 47.5 1.. 3. 4. 5..56.51.768 1.4 1.8 36 1.79.48.34 6 Diameter 1.13m Diameter 6m CMH35/MR16/UVC/94/GX1/WFL Degrees 14633 3658 166 915 585 46 99 9 181 146 Nominal beam angle degrees = 41.9.5 1.. 3. 4. 5..38.765 1.147 3 1.91.95.677 3.6 3.44 3.85 Diameter 3.85m Lamp life Life survival graphs are shown for statistically representative batches of lamps operated under controlled nominal conditions with a 11 hours per start switching cycle. Declared lamp life is the median value, i.e. when 5% 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, mechanical vibration, luminaire design and control gear. 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 increases in the Horizontal burning position. % Lamp Survival 1% 8% 6% 4% % % CMHMR16/83 4 6 8 1 1 Burning time (thousand hours) 6
1% CMH35MR16/93 1% CMH35MR16/94 8% 8% % Lamp Survival 6% 4% % Lamp Survival 6% 4% % % % % 4 6 8 1 Burning time (thousand hours) 4 6 8 1 1 Burning time (thousand hours) Lumen maintenance Lumen maintenance graphs show light output performance through life for statistically representative batches of lamps operated under controlled nominal conditions with a 11 hours per start switching cycle. A common 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 multiple 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 11 hours per start switching cycle, but less frequent switching will improve lumen maintenance. Note: The representative curves are shown for Vertical Base-Up lamp orientation unless otherwise specified. Lumen maintenance performance improves when operated in the Horizontal burning position. CMH MR16 W 83 1 CMH MR16 35W 93 1 8 8 (%) of original 6 4 (%) of original 6 4 1 4 6 8 1 1 CMH MR16 35W 94 Burning Time (thousand hours) 4 6 8 1 Burning time (thousand hours) 8 (%) of original 6 4 4 6 8 1 1 Burning time (thousand hours) 7
Warm-up characteristics During the warm-up period immediately after starting, lamp temperature increases rapidly evaporating 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. Percentage of final value (after 15 minutes) CMH MR16 W typical warm-up characteristic 16 14 1 1 8 6 Lamp current Lamp voltage 4 Lamp power Lamp lumens 1 3 4 Time from switch-on (minutes) Percentage of final value (after 15 minutes) CMH MR16 35W typical warm-up characteristic 16 14 1 1 8 6 Lamp current Lamp voltage 4 Lamp power Lamp lumens 1 3 4 Time from switch-on (minutes) 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 survival. Flicker Suitable electronic ballasts for ConstantColor TM CMH lamps provide square wave operation in the 7-4 Hz range and eliminate 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 colour change (usually towards green). The above situation can be 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 to maintain safety use electronic ballast or system which can shut itself off if ballast overheating occurs. End of life cycling A possible 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 gear. During subsequent warm-up the lamp voltage will again increase, causing extinction. This condition is known as end-of-life cycling. With electronic ballasts, cycling is unlikely. 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 1 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 control gear components. 8
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 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 is broken or missing. Although PET determines limits of human exposure to lamp UV, the risk of fading of merchandise due to UV 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 next page. UV PET performance data from bare lamp Product name UV-C 1 UV-B 1 UV-A 1 UVC/UVA UVB/UVA E eff PET (h) Risk Group -8 nm 8-315 nm 315-4 nm CMHMR16/83,14,6 6,65,,1,18 939 Exempt CMH35MR16/93,3, 4,344,1,,1 1765 Exempt CMH35MR16/94.3,5 1,764,,,4 73 Exempt 1 μ W / (cm ) / 5 Lux mw / (m * klx) Information for luminaire design Electronic ballast operation CMH W and CMH 35W have optimum performance on electronic gear.* This provides many advantages: Flicker free light output Well controlled electronic ignition process Simple wiring for fixtures due to elimination of ignitor and PFC capacitor Reduces fixture weight Automatic sensing of failed lamps and shutdown Lower overall system power consumption *For details of approved electronic ballasts for ConstantColor CMH lamps please consult your GE representative. CMH W is designed only for operation on electronic gear Containment Requirement N Circuit diagram electronic ballast LH: Lamp Holder E: Electronic Gear Mains E P LH ConstantColor CMH Precise MR16 lamps may be used in open fixtures. 9
Control gear and accessories Electronic ballasts GE s range of electronic HID ballasts are designed to allow optimal performance of our range of ConstantColor CMH lamps, offering reduced power consumption, regulated power through life, simplified circuitry and more stable lamp operation compared to electromagnetic systems. GE has upgraded its range which now includes a miniature range of -35 Watt ballasts in integral and remote versions to be compatible with all types of CMH -35 Watt lamps. Please consult GE for up to date details on approved ballasts. Advantages: Good regulation against supply voltage variation Improved lamp colour consistency Elimination of lamp flicker Reduced weight of control gear Reduced electrical power losses Ballast noise reduced/eliminated Single piece compact unit Reduced wiring complexity in the luminaire Safety warnings The use of these products requires awareness of the following safety issues: Warning Risk of electric shock - isolate from power supply before changing lamp Strong magnetic fields may impair lamp performance and worst case can lead to lamps shattering Risk of fire A damaged lamp emits UV radiation which may cause eye/skin injury, remove and dispose of broken lamp Unexpected lamp shattering may cause injury, fire or property damage Caution Risk of burn, allow lamp to cool before handling Lamp may shatter and cause injury if broken Arc tube fill gas contains Kr-85 Always follow the supplied lamp operation and handling instructions. www.gelighting.com/eu and General Electric are both registered trademarks of the General Electric Company 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 from time to time in the interest of product development, without prior notification or public announcement. All descriptions in this publication present only general particulars of the goods to which they refer and shall not form part of any contract. Data in this guide has been obtained in controlled experimental conditions. However, GE Lighting cannot accept any liability arising from the reliance on such data to the extent permitted by law. ConstantColor CMH MR16 Data Sheet October 1
GE Lighting ConstantColor CMH MR16 Ultra New Generation of Reflector Ceramic Metal Halide Lamps 35W DATA SHEET Product information GE s low watt CMH lamps have opened new possibilities for lighting design, combining the power and light quality of far larger and less efficient lamps. It is now possible to achieve lighting design that could not be achieved previously with inferior technologies. GE s new ConstantColor CMH Ultra technology platform has been developed with specific focus to retail applications. GE Ultra technology offers superb overall light quality, outstanding lumen maintenance, improved efficacy, while maintaining long life and reliability. These qualities are why GE is the leader in ceramic metal halide technology. Premium CRI Drastically improved lumen maintenance Outstanding efficiency: 4x better than halogen Long life Robust and reliable performance Colour uniformity lamp to lamp Compact lamp The next generation CMH lamps are the ultimate light source for retail applications where quality of light, colour and efficiency are important. Now, anyone with critical colour needs can enjoy the outstanding energy efficiency and the savings that CMH lamps provide. ConstantColor CMH Ultra lamps offer substantial benefits that make them the clear choice for specification into new stores, or into re-lamping existing store fixtures through regular replacement needs. Benefits More usable light over life, up to % more lumen output at 1, hours vs standard CMH lamps Extra long life of 16,5 hours Extended life and relamp cycles Compatible with both electronic and magnetic HID ballasts Vertical ±6º burning position Same size as standard CMH MR16 New 35W retrofits directly into existing MR16 fixtures, expands new sale offerings via improved lumen maintenance and longer life. Applications Commercial areas / city beautification / architectural
Specification summary Watts Operating Position Length [mm] Description Cap Colour CBCP [cd] Rated Average Life Hrs. 35 V ±6º 5 CMH35/MR16/V6/UVC/93/GX1/SP ULTRA GX1 93 16, 16,5 1 7613 35 V ±6º 5 CMH35/MR16/V6/UVC/93/GX1/FL ULTRA GX1 93 5,5 16,5 1 7614 Pack Qty Product Code 35 V ±6º 5 CMH35/MR16/V6/UVC/93/GX1/WFL ULTRA GX1 93 3, 16,5 1 7615 General Information Product Code 7613 7614 7615 Nominal Wattage 35W 35W 35W Nominal CCT 3K 3K 3K Format MR16 MR16 MR16 Bulb Type MR16 MR16 MR16 Bulb Diameter 51 mm 51 mm 51 mm Bulb Material Bulb Finish Aluminized Aluminized Aluminized Operating Conditions Burning Position Vertical ±6º Vertical ±6º Vertical ±6º Luminaire Open Open Open Electrical Characteristics Power 39 W 39 W 39 W Voltage 93 V 93 V 93 V Current.4 A.4 A.4 A Max Ignition Voltage 5kV 5kV 5kV Min Ignition Voltage 3kV 3kV 3kV Extinction Voltage 9% 9% 9% The specification provides typical performance data for 35W lamp operating on most electronic ballasts. Actual values depend on ballast, supply voltage and application. ConstantColor CMH Ultra lamps are compatible with a list of approved electronic and conventional 5Hz 3V magnetic choke ballasts. Contact your GE representative for more information. Photometric Characteristics Beam Angle 1 spot 5 flood 4 wide flood CBCP 16, 5,5 3, Lumens,,, CCx.439.439.439 CCy.398.398.398 CRI 9 9 9 Luminous Efficacy 56 LPW 56 LPW 56 LPW Starting and Warm-up Characteristics Time to Start @ 1ºC, sec <5 <5 <5 Time to Start @ -3ºC, sec <15 <15 <15 Hot Restart Time, Minutes <1 <1 <1 Warm-up to Time to 9% Lumen Output < < < Through life Performance Lumen Maintenance at 4% Rated Life (Mean Lumens) [%] 81 81 81 Average Rated Life [h] 16,5 (ECG)/1, (EM) 16,5 (ECG)/1, (EM) 16,5 (ECG)/1, (EM) Maximum Operating Conditions Max Bulb Temperature 1 3ºC 3ºC 3ºC Max BaseTemperature 3ºC 3ºC 3ºC 1 Measured at centre of MR16 lens, in vertical base-up position. Measured on 5mm GX1 ceramic cap rim, at transition to 3mm.
Dimensions B C D A Monogram position A Length (max.) [mm] 5 B Diameter (max.) [mm] 51 C (max.) [mm] D (max.) [mm] 14 Spectral power distribution Spectral power distribution curves are given in the following diagram 39 43 47 51 55 59 63 67 71 75 Relative Intensity Wavelength (nm) Distribution of luminous intensity The following diagrams show polar light intensity curves and beam diagrams for vertical base-up orientation. CMH MR16 35W 93 SP 1 3 4 5 6 5% Max 7 8 9 1 11 1 13 9 5 1 15 5 3 35 4 45 CMH MR16 35W 93 FL 5% Max 9 4 6 8 1 1 14 16 18 4 CMH MR16 35W 93 WFL 5% Max 9 14 5 6 15 16 17 18 1% Max 55 6 65 1% Max 8 3 3 34 1% Max 3
Beam diagrams CMH35/MR16/V6/UVC/93/GX1/SP ULTRA CMH35/MR16/V6/UVC/93/GX1/FL ULTRA Degrees Nominal beam angle degrees = 1 Degrees Nominal beam angle degrees = 8.1 6898 174 7566.5 1..19.18 4116 69 68.5 1..5.5 456 1.37 157.751 74. 1.437 965. 1.1 189 46 67 1.51 139 3..655 49 3. 1 164.764 377 1.75 841 4..873 98 4.. 681.98 41.5 5. 1.9 5. Diameter 1.9m Diameter m CMH35/MR16/V6/UVC/93/GX1/WFL ULTRA Degrees 13193 398 1466 85 58 366 69 6 163 13 Nominal beam angle degrees = 41.9.5 1.. 3. 4. 5..383.766 1.149 3 1.915.98.68 3.63 3.446 3.89 Diameter 3.89m Lamp life Life survival graphs are shown for statistically representative batches of lamps operated under controlled nominal conditions with an 11 hours per start switching cycle. The declared lamp life is the median life, which is when 5% of the lamps from a large sample batch would have failed. Lamp life in service will be affected by a number of parameters, such as supply voltage variation, switching cycle, operating position, mechanical vibration, luminaire design and control gear. The information is intended to be a practical guide for comparison with other lamp types. The 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. % Lamp survival % Lamp survival Lamp survival CMH MR16 Ultra 35W ECG 1% 8% 6% 4% % % 4 6 8 1 1 14 16 Burning time (hrs) Lamp survival CMH MR16 Ultra 35W EM 1% 8% 6% 4% % 4 % 4 6 8 1 Burning time (hrs)
Lumen maintenance Lumen maintenance graphs show light output performance through life for statistically representative batches of lamps operated under controlled nominal conditions with an 11 hours per start switching cycle. A common 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. In areas where multiple lamps are installed, consideration should be given to a group lamp replacement programme to maintain uniform illumination levels. Curves represent operating conditions for an 11 hours per start switching cycle, but less frequent switching will improve lumen maintenance. Note: the representative curves are shown for vertical base-up lamp orientation unless otherwise specified. % of initial lumens Lumen Maintenance CMH Ultra vs. Standard 1 8 6 4 CMH Standard CMH Ultra 3 6 9 1 15 Burning time (hours) Warm-up characteristics Typical warm-up characteristics During the warm-up period immediately after starting, lamp temperature increases rapidly evaporating the 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. Percentage of final value % 18% 16% 14% 1% 1% 8% 6% 4% Lamp Voltage Lamp Current Light Output % Dimming % 1 3 4 Time from switch-on (minutes) 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 survival. Flicker Suitable electronic ballasts for ConstantColor TM CMH lamps provide squared wave operation in the 7-4 Hz range and eliminate 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 colour change (usually towards green). The above situation can be 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 to maintain safety use electronic ballast or system which can shut itself off if ballast overheating occurs. 5
End of life cycling A possible 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 gear. During subsequent warm-up the lamp voltage will again increase, causing extinction. This condition is known as end-of-life cycling. With electronic ballasts, cycling is unlikely. 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 1 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 practise to replace lamps that have reached end-of-life as soon as possible after failure, to minimise electrical and thermal stress on control gear components. 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 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 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 merchandise due to UV 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. UV PET performance data from bare lamp UV-C 1 UV-B 1 UV-A 1 UVC/UVB UVB/UVA Eeff PET (h) Risk group -8 nm 8-315 nm 315-4 nm CMH35MR16/93/Ultra.4.1 4.8 3.378..9 1859 Exempt 1 μ W / (cm ) / 5 Lux mw / klm Information for luminaire design Electronic ballast operation CMH 35W Ultra lamps have optimum performance on electronic gear.* This provides many advantages: Flicker free light output Well controlled electronic ignition process Simple wiring for fixtures due to elimination of ignitor and PFC capacitor Reduces fixture weight Automatic sensing of failed lamps and shutdown Lower overall system power consumption * For details of approved electronic ballasts for ConstantColor CMH lamps please consult your GE representative. N Circuit diagram electronic ballast LH: Lamp Holder E: Electronic Gear Mains E P LH 6
Containment requirement ConstantColor CMH Precise MR16 lamps may be used in open fixtures. Control gear and accessories Electronic ballasts GE s range of electronic HID ballasts are designed to allow optimal performance of our range of ConstantColor CMH lamps, offering reduced power consumption, regulated power through life, simplified circuitry and more stable lamp operation compared to electromagnetic systems. GE has upgraded its range which now includes a miniature range of -35 Watt ballasts in integral and remote versions to be compatible with all types of CMH -35 Watt lamps. Please consult GE for up to date details on approved ballast types for CMH 35W Ultra. Advantages: Good regulation against supply voltage variation Improved lamp colour consistency Elimination of lamp flicker Reduced weight of control gear Reduced electrical power losses Ballast noise reduced/eliminated Single piece compact unit Reduced wiring complexity in the luminaire Safety warnings The use of these products requires awareness of the following safety issues: Warning Risk of electric shock - isolate from power supply before changing lamp Strong magnetic fields may impair lamp performance, and in the worst case could lead to lamp shattering. Use in enclosed fixtures to avoid the following: Risk of fire A damaged lamp emits UV radiation which may cause eye/skin injury, remove and dispose of broken lamp Unexpected lamp shattering may cause injury, fire or property damage Caution Risk of burn, allow lamp to cool before handling Lamp may shatter and cause injury if broken Arc tube fill gas contains Kr-85 Always follow the supplied lamp operation and handling instructions. www.gelighting.com/eu and General Electric are both registered trademarks of the General Electric Company 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 from time to time in the interest of product development, without prior notification or public announcement. All descriptions in this publication present only general particulars of the goods to which they refer and shall not form part of any contract. Data in this guide has been obtained in controlled experimental conditions. However, GE Lighting cannot accept any liability arising from the reliance on such data to the extent permitted by law. ConstantColor CMH MR16 Ultra Data Sheet October 1