Tony, I have added my thoughts below in brackets [ ] ..........
reynolto%[email protected] on 11/29/2000 06:01:50 AM Please respond to reynolto%[email protected] To: emc-pstc%[email protected] cc: (bcc: George Alspaugh/Lex/Lexmark) Subject: End of Line Testing of IT Equipment All, What are the exact requirements for End of Line testing and do they differ from country to country. We currently subject products to the following tests: 1. Earth Bonding at 25A (resistance to be less than 0.1 Ohms) [IEC 60950 and like standards specify (section 2.5.11) a test current of 1.5 times the current capacity of the hazardous circuit, but not to exceed 12V applied or 25A. For example, if the resistance were 0.1 ohm, an applied voltage of 2.5V would create the maximum current of 25A.] 2. Dielectric strength test of 2.1KVDC for 2 seconds. [Section 5.3.2, Note 1, of IEC 60950 allows for an electric strength test of 1 sec for production purposes. In practice, it may take 2-3 seconds for the voltage to ramp up and be sustained at the desired level. Table 18 (same section) lists the values required, depending on the type of insulation used and the expected working voltage.] 3. Insulation resistance test of 500VDC (resistance to be greater than 10MOhms). [It is my understanding that the electric strength, at higher voltages, is a sufficient test of the insulation, including creepage and clearance distances. I am not aware of any additional production tests required for insulation.] Question -------- Is this last test mandatory for product compliance in UK/Europe/USA/Rest of the World? Kind Regards Tony Reynolds Principal Compliance Engineer Pitney Bowes Ltd The Pinnacles Harlow Essex CM19 5BD Tel +44 1279 449479 Fax +44 1279 449118 E-Mail: [email protected] www.pitneybowes.com ------------------------------------------- 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]
