Guide for specifying LED substitute light source categories as equivalents for corresponding filament light source categories prepared by the Task Force on Substitutes/Retrofits.

GRE and its Task Force on Substitutes and Retrofits proposed and GRE at its 79th session agreed to include an “interlock feature” for LED substitute light sources to prevent the misuse of these light sources. The first LED substitute category proposal is the “PY21W/LED”. A further solution has been developed by IEC cap-holder experts in IEC TC34/SC34B/WG2 by adding a “third pin” at an angle of 110° (from the reference pin) for the BA15 cap system, including the BAU15s cap prescribed for the PY21W filament light source category. This document contains the relevant cap and holder sheets for implementation in the IEC 60061 structure.

Presentation in support of the proposal submitted by the Task Force on Substitutes and Retrofits (TF SR) which introduces requirements for the use of light emitting diode (LED) substitute light sources in the new LSD UN Regulation LED Replacement Light Sources.

Proposal to introduce requirements and test specifications for light emitting diodes (LED) substitute light sources, including to

1. introduce provisions for LED substitute light sources into Regulation No. 128;
2. introduce a new category sheet PY21W/LED based on LED technology into the Consolidated Resolution (R.E.5);
3. establish equivalence criteria as guidance for specifying sheets for LED substitute light source categories. (These guidelines are intended for publication, with the agreement of GRE, on the GRE website under “reference documents”, similar to criteria for new filament light sources for head lighting (GRE-77-04). In addition, these criteria are being prepared for insertion in publication IEC 60810.);
4. a draft proposal to IEC concerning the cap/holder system of the LED light source category PY21W/LED, for information to GRE (GRE-80-03) only, to show the interlock feature and the differences with the cap/holder system of its counterpart filament light source category PY21W.

The current text of UN R128, Annex 4, paragraph 1.2. allows only for a decrease of luminous flux from 1 minute to 30 minutes. This has proven to be unnecessarily design restrictive as the drive electronics in a stabilized light source can lead to a slight increase in the luminous flux from 1 minute to 30 minutes. Therefore, this proposal would allow a limited increase of luminous flux from 1 minute to 30 minutes within the given minimum and maximum requirements. This proposal relates to document GRE/2018/48 retaining requirements for LR4 category light sources which would otherwise have been impacted by the present proposal.

Modification of Figure 1 (Example of allowed luminous flux behaviour of an approved LED light source under UN
Regulation No.128, Annex 4, paragraph 1.2.) to add the range after one minute and 30 minutes with a positive or negative “gradient”.