Lumen maintenance definition

Lumen maintenance means the ratio of maintained light output (measured after 2000 hours of operation) to initial light output (measured after 100 hours of operation). Note that in the case of replacements for 50W ELV halogen reflector lamps, light output refers only to Downward Light.
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Lumen maintenance means luminous flux at a given time in the life of LED lamp divided by the initial value of the luminous flux of the lamp, which is expressed as a percentage x of the initial luminous flux;
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Lumen maintenance means the luminous flux or lumen output at a given time in the life of the lamp and expressed as a percentage of the rated luminous flux or rated lumen output, respectively.
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Examples of Lumen maintenance in a sentence

  • Lumen maintenance data shall be measured at the in-situ temperature of the LED source as described in section 4.3.


More Definitions of Lumen maintenance

Lumen maintenance means the lumen output measured at a given time in the life of the lamp and expressed as a percentage of the measured initial lumen output.
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Related to Lumen maintenance

  • Routine maintenance means actions performed on a regular or controllable basis or in response to uncontrollable events upon a highway, road, street, or bridge. Routine maintenance includes, but is not limited to, 1 or more of the following:

  • Major maintenance means the adjustment, repair or replacement of a component or module that could affect the accuracy of a measurement.

  • Software Maintenance means the process of modifying software after delivery to correct faults, improve performance or other attributes, or adapt to a changed environment. (Reference ISO/IEC 14764:2006, as amended or superseded.) Software maintenance does not include any customization or configuration.

  • Planned Maintenance means any Maintenance BT has planned to do in advance.

  • Operation and Maintenance or “O&M” shall mean all activities required to operate, maintain, and monitor the effectiveness of the RA as specified in the SOW or any EPA-approved O&M Plan.