![Specification summary*](/images/new-backgrounds/35874/358743x1.webp)
Specification summary*
Ordering Information
Description | Wattage | Colour | Product Code |
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CMH20/T/UVC/U/830/G8.5 Plus | 20 | 3000K | 39858 |
CMH35/T/UVC/U/830/G8.5 Plus | 35 | 3000K | 43273 |
CMH35/TC/UVC/U/842/G8.5 | 35 | 4200K | 26348 |
CMH70/TC/UVC/U/830/G8.5 Plus | 70 | 3000K | 43274 |
CMH70/T/UVC/U/942/G8.5 | 70 | 4200K | 26349 |
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General | Units | 20W | 35W | 35W | 70W | 70W |
3000K | 3000K Plus | 4200K | 3000K Plus | 4200K | ||
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Product code |
| 39858 | 43273 | 26348 | 43274 | 26349 |
Nominal Wattage | W | 20 | 35 | 35 | 70 | 70 |
Format |
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| Single ended |
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Bulb type |
| T4.5 | T4.5 | T4.5 | T4.5 | T4.5 |
Bulb diameter | mm | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 |
Bulb material |
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| UVC Quartz |
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Bulb finish |
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| Clear |
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Arc Gap | mm | 3.35 | 4.65 | 4.3 | 7.4 | 5.5 |
Base |
| G8.5 | G8.5 | G8.5 | G8.5 | G8.5 |
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Operating Conditions |
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Burning position |
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| Universal |
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Luminaire characteristics |
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| Enclosed |
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Notes:
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 & 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 | *** | 5.0 | 5.0 | 5.0 | 5.0 | |
Min. Ignition Voltage | kV | *** | 3.5 | 3.5 | 3.5 | 3.5 | |
Extinction voltage | % | *** | 90 (Max.) | 90 (Max.) | 90 (Max.) | 90 (Max.) | |
(% of rated input voltage) | |||||||
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*The specification provides typical performance data for 35W & 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 |
| 20W | 35W | 35W | 70W | 70W |
| 3000K | 3000K Plus | 4200K | 3000K Plus | 4200K | |
Product code |
| 39858 | 43237 | 26348 | 43274 | 26349 |
100 hrs Lumens | lm | 1650 | 3400 | 3150 | 6200 | 6000 |
Typical Lumen change |
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with burning position | lm |
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– vertical to horizontal |
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Typical voltage change |
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with burning position | V |
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| 8 |
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– vertical to horizontal |
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Correlated Colour Temperature | K | 3000 | 3000 | 4200 | 3000 | 4200 |
Chromaticity X |
| 0.435 | 0.435 | 0.475 | 0.435 | 0.475 |
Chromaticity Y |
| 0.400 | 0.400 | 0.370 | 0.400 | 0.370 |
Colour Rendering Index | Ra | 80+ | 84+ | 88+ | 80+ | 90+ |
Luminous efficacy | lm/W | 85 | 86 | 80 | 86 | 83 |
Base |
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| G8.5 |
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Starting and |
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Time to start ( at 25 °C ) | sec. | < 2 | < 2 | < 2 | < 2 | < 2 |
Time to start - Cold box test at | sec. | < 2 | < 2 | < 2 | < 2 | < 2 |
Hot restart time | min. | < 3 | < 3 | 15 | 15 | 15 |
min. | 1.2 | 1.2 | 3 | 3 | 3 |
* Typical values (actual values are ballast and ignitor dependent)
Through life Performance*
Lumen maintenance | % | 68 | 68 | 85 | 71 | 77 | |
at 40% rated life (mean lumens) | |||||||
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Average rated life | h | 12000 | 15000 | 12000 | 15000 | 15000 |
* Life data measured in Vertical Base up position. Performance can be greatly increased in horizontal position.
Maximum Operating temperatures**
Maximum allowed bulb temperature |
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(horizontal orientation, thermocouple | °C | 500 | 500 | 500 | 550 | 550 | |
attached above burner) |
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Maximum pinch temperature | °C | 300 | 300 | 300 | 300 | 300 | |
(vertical base up orientation) | |||||||
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*The specification provides typical performance data for 35W & 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 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.
2 | 3 |