Richard, Be careful . . . UL 1950 3rd Ed, Section 4.3.12, "Equipment that can generate ionizing radiation or ultraviolet light, or that uses a laser . . ." does make a reference to IEC 825-1 BUT it is has a line through it. It is a D1 deviation. You are then refered to Annex NAE where 4.3.12 now references for the US (NEC) 21 CFR 1040 (which is eseentially the same as ANSI Z136.1) where LEDs are not required to be evaluated. 21 CFR 1040 is undergoing a revision which harmonizes it with EN 60825. However, the CDRH will not be including LEDs. THere has been no evidence that LEDs have caused injuries.
-John Juhasz- Fiber Options Bohemia, NY -----Original Message----- From: wo...@sensormatic.com [mailto:wo...@sensormatic.com] Sent: Wednesday, December 08, 1999 1:43 PM To: emc-p...@majordomo.ieee.org Subject: RE: Products with high power LEDs Actually, the concern is worldwide. It starts with IEC 60825-1 which covers emissions from lasers and LEDs. IEC 950 has a normative reference to IEC 825 (an earlier revision of IEC 60825-1). IEC950 says that the national members are encouraged to apply the latest revisions of the normative references. UL 1950 references IEC 825-1:1993 which has the same LED requirements as IEC 60825-1. Richard Woods ---------- From: Gary McInturff [SMTP:gmcintu...@telect.com] Sent: Wednesday, December 08, 1999 12:08 PM To: 'geor...@lexmark.com'; emc-p...@majordomo.ieee.org Subject: RE: Products with high power LEDs Can somebody tell me what Europe's concern is with the LED's. I understand the hazards of laser's, wavelength, power, durations et al but I don't know what Europe is trying to protect. If this was just recently discussed please forgive the transgression. I have been sitting in those flying horizontal aluminum tubes for the last week and have been unable to actually read any of these e-mails. Certainly, you can respond to me directly rather than the list. Thanks Gary -----Original Message----- From: geor...@lexmark.com [mailto:geor...@lexmark.com] Sent: Wednesday, December 08, 1999 5:26 AM To: emc-p...@majordomo.ieee.org Subject: RE: Products with high power LEDs > Assume a business product with a high power LED for use in the EU and that > it operates at 230V. It will be subject to the Low Voltage Directive, so > EN60950 and EN60825-1 would apply. Now assume a similar product but it > operates at 24V. The LVD would not apply in this case. What are the legal > compliance requirements for the LED output? > The Low Voltage Directive is definitely applicable for the 230V configuration. A 24V device is SELV, and has no potential for electric shock. If its input power is limited to under 100VA, it does not require a fire enclosure per EN 60950. So, the only major safety issue remaining is possible exposure to the laser under fault conditions. EN 60825-1 (as I recall) has nothing to do with the voltage required to power the host equipment. So it applies in either case. George Alspaugh Lexmark International --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
