Hello There! For IEC1010 Type products (measurement and test equipment), the standard specifies it is written for units operating from 5 - 45 deg C. For any other ambient operating temperature, additional tests should be made to ensure an equivalent level of asfety is achieved.
What about IEC 950/ UL1950? The standard is based on a 25 deg C ambient. It also has formula to use for limits of temperature rises above for equipment rated for a higher ambient operating temperature. However, nothing is mentioned regarding lower than 25 deg C ambient temperatures. I have seen many units Listed/CE Approved with an ambient operating temperature say of -20 deg C to 60 deg C without additional tests in the Listing/CE Reports. Any comments would be appreciated. Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: [email protected] website: http://www.itl.co.il ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
