Vijay, 1. Remove all LCDs. You are left with rectangular openings. 2. Evaluate if you meet the fire enclosure requirements with LCDs removed. 3. If you meet the fire enclosure requirements with LCDs removed, I would say that the LCDs, other than their intent to display, are serving to protect a user to reach within the enclosure and access hazardous voltage and/or energy parts and/or mechanical moving parts. In this case, the LCDs are part of the electrical/mechanical enclosure and may be rated FLAMMABILITY CLASS HB or better. 4. Regarding RTI, a Heating Test is conducted under normal operating conditions. The RTI of the particular plastic should not be exceed during this test taking into account the maximum specified operating ambient temperature (Tmra) assigned to the equipment. For equipment rated Tmra 50 deg C, and a polymeric part RTI rated 80 deg C, the maximum temperature rise allowed during the Heating Test is 80-50 = 30 degC.
This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 -----Original Message----- From: Wani, Vijay (V) [mailto:[email protected]] Sent: Wednesday, December 19, 2001 3:22 PM To: '[email protected]' Subject: UL 60950 - safety related question hello Group: i have 8 LCD displays inside a box. if there is an outer metal enclosure, does internal enclosure (which is plastic at each LCD display) need to be V-0, does it need an RTI above the operation temperature? where should i find guideline about V-0 and RTI requirements for particular equipment? i would appreciate any response. thank you in advance. vijay Wani 989-636-0473 Dow Chemical ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
