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.
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.
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;

Examples of Lumen maintenance in a sentence

  • Lumen maintenance operation is conducted at specific ambient temperatures shown in Table 3 below, for each lamp category.

  • Lumen maintenance report as per LM 80 guidelines shall be submitted for the LEDs used along with the BID.

  • The term "Lumen maintenance" (L) is used in connection with the degradation of light in LEDs. This describes the remaining luminous flux over time with respect to the original luminous flux of the LED.

  • Rated Minimum LED Life (L70) 50000 Burning Hours (With only 30% Lumen Degradation or 70% Lumen maintenance) 13.

  • Lumen maintenance shall be measured for the LEDs according to LM-80, or when available for the luminaires according to LM-84.

  • Lumen maintenance factors are individual to each product, and corresponding multipliers need to be applied to the initial illuminance values to evaluate how each system performs compared to RP-8-00.During its life, the HPS system will only depreciate by 10 to 15 percent28 and then burn out.

  • Lumen maintenance information is required for each worst case thermal family member: select one of the two options and submit all of the corresponding required documentation.

  • DETAILS:The Schedule of Accounts paid, covers the following: FUNDCHEQUE NUMBERS/ PAY PERIODAMOUNTMunicipal Account (Attachment 1 and 2) Cheques LEGAL/POLICY: Regulation 12(1) & (2) of the Local Government (Financial Management) Regulations 1996 refers, i.e.- 12.

  • Lumen maintenance is often used interchangeably with expected lifetime of the luminaire, or at least as the usual proxy for it.

  • Lumen maintenance is the measure of lumen output after an elapsed operating time, expressed as a percentage of the initial lumen output.


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.
Lumen maintenance means the ratio of luminous flux of a lamp at a given time in its life to its initial luminous flux, the lamp being operated under specific conditions and expressed as a percentage.

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.

  • Preventive Maintenance means that maintenance, performed on a scheduled basis by the Contractor, which is designed to keep the Equipment in proper operating condition.

  • Prosecution and Maintenance or “Prosecute and Maintain” means, with regard to a Patent Right, the preparing, filing, prosecuting and maintenance of such Patent Right, as well as handling re-examinations, reissues, and requests for patent term extensions with respect to such Patent Right, together with the conduct of interferences, the defense of oppositions and other similar proceedings with respect to the particular Patent Right. For clarification, “Prosecution and Maintenance” or “Prosecute and Maintain” will not include any other enforcement actions taken with respect to a Patent Right.

  • Deferred Maintenance means improvements necessary for continued operations which do not improve productivity or alter the process technology.

  • Operations and maintenance means a project delivery method in which the District enters into a single contract for the routine operation, routine repair, and routine maintenance of an infrastructure facility.

  • Preventative Maintenance means the routine, customary or regular course of procedure related to the care or upkeep of an existing Department facility or system, which may also include inspection services provided as part of a preventative maintenance program. Preventive maintenance is conducted to keep equipment working and/or extend the life of the equipment.

  • Operation and Maintenance Expenses or ‘O&M expenses' means the expenditure incurred on operation and maintenance of the project, or part thereof, and includes the expenditure on manpower, repairs, spares, consumables, insurance and overheads;

  • Operation and Maintenance Costs means the costs of:

  • Corrective Maintenance means the maintenance which is required when an item has failed or worn out, to bring it back to working order, which may also include those services necessary to partially restore, renew or strengthen an existing Department facility or system, following damage caused by use or normal wear and tear.

  • Emergency Maintenance means any period of maintenance for which, due to reasons beyond its reasonable control, Sprint Convergence is unable to provide prior notice of.

  • Support and Maintenance Services means the support and maintenance services described in Section 1 of these Support Terms.

  • Industrial maintenance coating means a high performance architectural coating, including primers, sealers, undercoaters, intermediate coats, and topcoats formulated for application to substrates, including floors, exposed to one or more of the following extreme environmental conditions listed below and labeled “For industrial use only;” “For professional use only;” “Not for residential use;” or “Not intended for residential use.”

  • Maintenance Adder means an adder that may be included to account for variable operation and maintenance expenses in a Market Seller’s Fuel Cost Policy. The Maintenance Adder is calculated in accordance with the applicable provisions of PJM Manual 15, and may only include expenses incurred as a result of electric production.

  • Generator Maintenance Outage means the scheduled removal from service, in whole or in part, of a generating unit in order to perform necessary repairs on specific components of the facility, if removal of the facility meets the guidelines specified in the PJM Manuals.

  • Maintenance and Support Services means the services provided by Contractor under Appendix F.

  • Period of Maintenance means the specified period of maintenance from the date of completion of the works, as certified by the Engineer.

  • Maintenance Services means SAP’s then-current maintenance and/or support services offered under and described in detail in the applicable SAP PartnerEdge Model.

  • Maintenance Term means the period of time for which Customer has purchased Maintenance Services, as evidenced by the Purchase Order delivered by Customer in connection therewith, together with all renewals effected in accordance with Section 4 of this Agreement.

  • Maintenance and Support means updates, upgrades, patches, fixes, etc. and technical support provided for the Products and Services that Supplier is required to provide directly to DXC or a DXC Customer.

  • maintenance order , in relation to a court, means an order made by a court —

  • Scheduled Maintenance means any adjustment, repair, removal, disassembly, cleaning, or replacement of components or systems required by the manufacturer which is performed on a periodic basis to prevent part failure or equipment or engine malfunction, or anticipated as necessary to correct an overt indication of malfunction or failure for which periodic maintenance is not appropriate.

  • Maintenance area means any geographic region of the United States previously designated nonattainment pursuant to the CAA Amendments of 1990 and subsequently redesignated to attainment subject to the requirement to develop a maintenance plan under Section 175A of the CAA, as amended.