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As the DLC processes applications for V5.1, we have encountered the need for minor corrections, clarifications, and policy changes. In order to be as transparent as possible, the V5.1 Policy document, Technical Requirements Tables (TRT), and Manufacturer and Industry Guidance will be updated as needed, and the changes will be tracked in the relevant documents and in the table below, which shows the corrections or clarifications and where they can be found in the document(s).
| Date Updated | Change Type | Description | Affected Document |
|---|---|---|---|
| 10/19/2022 | Policy Change | LM-79 Distribution Reports Describes a method by which the uplight and downlight components of indoor luminaires may be measured separately in a goniophotometer and combined into a single LM-79 report. | V5.1 Policy – 37, 38 |
| 4/15/2022 | Policy Change | Integral Control Sensor Options Adds “Ambient Light” as an acceptable term for daylight sensors. | V5.1 Policy – 23 |
| 2/23/2022 | Policy Change | Special Considerations for Dimmable Lamps Adds a requirement for Type A T8 8’ lamps claiming to be dimmable via a wired protocol. Due to a lack of dimmable ballasts for T8 8’ lamps, The DLC will not accept T8 8’ lamps that claim wired dimming capability via direct input from the ballast. | V5.1 Policy – 20, 21 |
| 2/8/2022 | Policy Change | Special Considerations for Dimmable Lamps Shortens the name of the communication protocol classification for Type B dimmable lamps using an external device to receive a wired control signal | V5.1 Policy – Page 21 |
11/19/2021 | Clarification | Integral Control Sensors Generalizes the Multifunction Sensor category to include functions other than Occupancy + Daylight | V5.1 Policy – Page 19 |
| 10/18/2021 | Policy Change | Warranty Requirements Adds an exception to warranty requirements for consumable components of products | V5.1 TRT – Page 23 |
| 10/15/2021 | Clarification | Color Maintenance Testing Adds description of the appropriate drive current to be used for the LM-80 data set | V5.1 Policy – Page 10 |
| 9/20/2021 | Clarification | Color Rendering Notation Changes the notation of Ra to include (CRI) for clarity | V5.1 Policy – Pages 7, 8, 28, 29, 32 |
| 9/20/2021 | Clarification | Beam Angle Tolerance Clarifies the PUDs applicable to the beam angle tolerance requirement | V5.1 Policy – Pages 14, 32 |
| 9/20/2021 | Clarification | Document Format Clarifies that the formatting of this document does not correlate to the SSL V5.1 Technical Requirements | V5.1 TRT – Page 1 |
| 9/20/2021 | Clarification | Driver / Power Supply Requirement Adds an example documentation to help identify specific types of power supplies | V5.1 TRT – Page 14 |
| 9/20/2021 | Clarification | Color Rendering Notation Changes the notation of Ra to include (CRI) for clarity | V5.1 TRT – Page 17, 19, 20 |
| 6/23/2021 | Policy Change | Alternative testing procedures Expands alternative testing procedures to include any PUD with independent uplight and downlight | V5.1 TRT – Page 28 |
| 6/23/2021 | Clarification | Multifunction integral controls Broadens the types of controls that can be categorized as multifunction | V5.1 Policy – Page 22 |
| 6/23/2021 | Clarification | Phase cut control communication Revises Power Line/Phase-Cut communication types to only include products that specifically use phase-cut. Products communicating via Power Line are listed as “Wired Other.” | V5.1 Policy – Page 24 |
| 5/5/2021 | Clarification | Filtering for BUG on the QPL More information on how to find BUG Ratings on the QPL | V5.1 Policy – Page 14 |
| 5/5/2021 | Clarification | Acceptable terms for dimming To meeting dimmability requirements Specification sheets do not explicitly need to state “dim”, “dimmable”, or “dimming”; using terms from Table 9 is acceptable | V5.1 Policy – Page 18 |
| 5/5/2021 | Clarification | Examples of calculating UGR Clarified how to calculate UGR for basket type troffers | V5.1 Policy – Page 38 |
| 5/5/2021 | Clarification | Special Considerations for Dimmable Lamps Clarifies how UL Type B lamps using an external device to dim will be complete application form | V5.1 Policy – Page 20 |
| 5/5/2021 | Clarification | Color Rendition Tolerances More clearly lists out tolerances to color rendition | V5.1 Policy, TRT – Page 31 (Policy); Page 20 (TRT) |
| 3/25/2021 | Policy Change | Testing Constraints Broadening alternative testing procedure for luminaires that do not fit inside typical photometric testing equipment from products within the linear ambient primary use designation only to any linear style product. | V5.1 TRT – Page 28 |
| 3/10/2021 | Policy Change | Special Considerations for Dimmable Lamps Because lamps are most often used in retrofit applications, there are special considerations needed to ensure end users can dim lamps as desired. The policy change requires more of Type B lamps that claim to be dimmable with wired protocols. | V5.1 Policy – Pages 20, 21 |
| 1/22/2021 | Clarification | Linking SPDX information to LM-19 In order to link TM-27 and LM-79 documents, the following language has been added: “The product model number shall be present and match in both the TM-27 and LM-79 documents” | V5.1 Policy – Page 35 |
| 1/22/2021 | Correction | IES Rcs,h1 tolerance IES Rcs,h1 tolerance corrected from “-1%” to “+/- 1%” | V5.1 Policy and TRT – Page 32 (Policy) Page 20 (TRT) |
| 1/22/2021 | Correction | Products required to meet Beam Angle 2G11 base replacement lamps must also meet Beam Angle requirements, along with linear replacement lamps | V5.1 Policy and TRT – Pages 13, 15, 16, 32 (Policy) Page 21 (TRT) |
| 11/13/2020 | Clarification | Products with UGR < 10 Original version did not indicate what bin to use when a product has UGR values lower than the listed range: if a product has a UGR less than 10.0, it will fall in the 10.0-12.9 bin. | V5.1 Policy and TRT – Page 13 |
| 11/13/2020 | Correction | Driver operating temperature Original versions of the V5.1 Technical Requirements Tables made reference to “driver operating temperature,” which should have read “driver operating temperature specification for which the driver is designed to last ≥50,000 hours” | V5.1 Policy and TRT – Page 13, 14 |
| 11/13/2020 | Clarification | Large Linear Ambient Testing The DLC has developed and approved alternative procedures for testing linear ambient products with a length greater than or equal to five feet and linear ambient products with indirect components. | V5.1 TRT – Page 28 |
| 10/15/2020 | Policy Change | ISTMT Testing on Linear Replacement Lamps Linear replacement lamps can now conduct in-situ temperature measurement testing (ISTMT) via one of the two methods: either on the bare lamp per safety certifications, or in a selected reference luminaire. | Testing and Reporting Requirements for Linear Replacement Lamps – Page 8, 10 |
| 10/15/2020 | Clarification | Acceptable Integral Control Terms Broadens acceptable terms on the Product Spec Sheet or Supplemental Literature | V5.1 Policy – Page 21 |
| 10/15/2020 | Clarification | Definition of Multi-function integral controls Multifunction integral controls are an interior control capability. | V5.1 Policy – Page 21 |
| 10/15/2020 | Clarification | Color testing if minimum color rendition was not captured The DLC requires that color testing be conducted on the worst-case CCT, CRI, and efficacy variations, which is likely the combination of lowest CCT and highest color rendition. If the overall minimum color rendition option was not captured in any LM-79/color report above, this configuration must be tested. | V5.1 Policy – Page 9 |
| 10/15/2020 | Clarification | Efficacy allowances for FALD products While FALD products are not eligible for efficacy allowances related to discomfort glare, they are eligible for other allowances | V5.1 Policy – Page 9 |
| 9/1/2020 | Testing change | Electrical testing in full LM-79/distribution reports Some goniophotometers do not have the ability to measure/report total harmonic distortion (THD). As such, THD as well as Power Factor will not be tested as part of the full LM-79/distribution reports. | V5.1 Policy and Manufacturer and Industry Guidance – Page 31 |
| 8/20/2020 | Policy Change | Outdoor R9 Requirement The R9 requirement for outdoor products has been changed from a required threshold to a reporting requirement only. High-bay products must still meet R9 ≥ -40. | V5.1 Policy and TRT – Page 8 |
| 7/30/2020 | Guidance added | Color Maintenance reporting requirements LM-80 reports may not include absolute Duv information for each reporting interval, but only the change in Duv from 0 hours. Guidance has been added to the policy document and Manufacturer Guidance that describes how to report maintenance in the case that average chromaticity coordinate data at the ≈ 1000-hour and ≈ 6000-hour measurement points are not provided and only chromaticity shift (Δu’v’) data is available. | V5.1 Policy and Manufacturer and Industry Guidance – Page 10 |
| 6/17/2020 | Clarification | White-tunable testing requirements Clarified requirements around testing and reporting at various CCT settings for all white-tunable products; not just DLC Premium. | V5.1 Policy – Page 11 |
| 6/17/2020 | Clarification | Range of continuous dimming capability Original versions of the V5 policy documents were not clear about designating the range of continuous dimming capability, in which the options were “Above 10%, Below 10%.” This version of the document clarifies the options as “Above 10%, Less than or equal to 10%.“ | V5.1 Policy and TRT – Page 17 |
| 6/17/2020 | Clarification | Expanded rationale regarding dimming requirements The V5.0/V5.1 dimming policy enhances controllability and ensures that products listed on the QPL have the capability to be dimmed and are marketed as such. The DLC does not set requirements regarding how qualified dimmable products are installed and/or used in the field. | V5.1 Policy – Page 18 |
| 6/17/2020 | Correction | Driver warranty temperature Original versions of the V5 policy documents made reference to “driver operating temperature,” which should have read “driver warranty temperature.” | V5.1 Policy and TRT – Page 24 |
| 6/17/2020 | Clarification | “Bare lamp” terminology Language has been added to clarify that the term “bare lamp” represents the performance of replacement lamps when operated outside of a luminaire or retrofit kit, including a ballast for Type A or driver for Type C. The Linear Replacement Lamps policy has also been updated to reflect this change. | V5.1 Policy – Page 39 |
| 6/17/2020 | Clarification | Full LM-79/color report and full LM-79/distribution report instructions Clarifications have been added around submitting photometric test reports to comply with the full LM-79/color report or full LM-79/distribution report definitions. | V5.1 Policy – Page 34 |
| 6/17/2020 | Correction | Scaled vs. reported tab terminology The SSL application form has a tab called the “Reported Performance Table.” The original version of the V5.1 policy document referenced the “Scaled Performance Table.” The correct terminology is “Reported Performance Table.” | V5.1 Policy – Page Through-out |
| 6/17/2020 | Correction | Lumen Maintenance – L70 not required for DLC Premium Original version incorrectly stated that the L90 requirement for DLC Premium “is in addition to the L70 requirements of the DLC standard classification.” There is no L70 requirement for DLC Premium; just L90 ≥ 36,000 hours. | TRT – Page 13 |
| 6/17/2020 | Clarification | Exclusions from DLC Premium More clearly states that Linear-Style Retrofit Kits for Troffers are not eligible to qualify for the DLC Premium classification under V5.1. | TRT – Page 12 |
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