VW stands for 'Vertical Wire' test. This applies to wires only. It is however, the best class. 94 V series is the UL 94 standard, Vertical positioning of the test sample. V-0 is the best rating.
John A. Juhasz Product Qualification & Compliance Engr. Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 516-567-8320 ext. 24 Fax: 516-567-8322 -----Original Message----- From: Terry Meck [mailto:[email protected]] Sent: Tuesday, March 30, 1999 12:52 PM To: [email protected] Subject: Is there any correlation between VW-1 wire and UL 94 V-1 ? Hello: I have a question about the interpretation of UL 1950 / En 60950 sec 4.4.6 Fire enclosure construction. "The following constructions are considered to satisfy the requirement without test: .... openings in the bottom, each not larger than 40 mm sq under: @ components of FLAMMABILITY CLASS V-1 or better, or FLAMMABILITY CLASS HF -1 or better, or @ parts made of material of FLAMMABILITY CLASS V-1 or better, or FLAMMABILITY CLASS HF -1 or better;" Is there any correlation between VW-1 wire and UL 94 V-1 FLAMMABILITY CLASS ? That is to say if all parts are V-0 or V-1 and wires of VW-1 would this construction be considered to comply? What is the best way to get information on the various wire classes UL 1581, 1180, 3239 etc. Your input is appreciated! Terry J. Meck [email protected] --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
