ANSI NEMA C78.52-2017 pdf free download – Electric Lamps— LED (Light Emitting Diode) Direct Replacement Lamps — Method of Designation.
5 Description of a Designation
5.1 General
A direct LED replacement lamp designation code shall consist of a combination of letters and numbers in the following sequence:
a. Lamp Type Classification Letter (SLR)
b. Characteristic Number (See Annex A1 , A2, & A3)
c. Special Characteristic Letter(s) (optional)
The lamp designation code should be marked on the lamps or on the product packaging.
5.2 Lamp Type Classification Letters
The code for direct LED replacement lamp type classification shall be SLR Refer to annex A1 through A3 for the current SLR codes.
5.3 Characteristic Number
The direct LED replacement lamp code characteristic number is technology dependent and is based on existing ANSI lamp codes for incumbent lamp technologies. This standard provides a designation system for the following lamp technologies :
a. Incandescent (INC)
b. Halogen (HAL)
c. Linear Fluorescent (LFL)
d. Compact Fluorescent (CFL)
e. High Intensity Discharge (HID)
Characteristic number shall follow directly after the lamp type classification, and it represents the set of all key characteristics of the lamp in question, so as to ensure electrical, physical, safety, and operational interchangeability. The direct replacement lamp characteristic number, format as well as number of characters, is dependent on the lamp being replaced and is defined in Annex A1 through A3. For specific characteristic number refer to appropriate Annex.
5.4 Special Characteristic Letters Special characteristics, if critical to proper operation, are to be included as part of the lamp designation code and are to follow directly after the lamp type classification designation. See Annex B for current list of special characteristic designation letters. Absence of a letter indicates that there are no known restrictions for use.
6 The Practice of Lamp Code Designations (LCD) Becoming American National Standard
LCD numbers are assigned by means of this written procedure. A LCD is not an ANS, or an ANSI standard, but is rather a method of sharing lamp system data. The program provides a listing service in the form of publishing LCDs for public knowledge and for the development of standards. If there are multiple manufactured lamps operating with the same electrical characteristics, a standard may be proposed. Once an LCD code designation is published in an ANSI approved C78 standard, the data can only be changed through the ASC consensus process. It is understood that the originating company releases all LCD data to the ASC WG. The information in an ANSI standard for any LCD code supersedes the information on the code request form. LCD data that is not in an approved ANSI standard may be changed only at the request of the original LCD requestor. To make such a request, the original applicant shall complete a Solid State Lighting lamp code designation request form in its entirety and the “notification of change in design” shall be distinctly marked—the box at the top of the request form labeled, “notification of change in design” should be checked. The secretary shall, within 1 0 days of receipt, circulate the request to the appropriate Work group and the LED lamp code designation participants for review and comment.ANSI NEMA C78.52 pdf download.