The safety agencies will primarily look to see if the inrush will cause nuisance tripping of any overcurrent protection devices, including the branch circuit protection, and sometimes effects on additional earth leakage current. For your application, the North American agencies will assume branch circuit protector is rated 15A (assuming your using an ANSI/NEMA 5-15P attachment plug). Inrush current is typically monitored, but isn't generally a show-stopper without some secondary effect.
Regards, Peter L. Tarver Nortel [email protected] >---------- >From: Paul Herrick[SMTP:[email protected]] >Sent: Tuesday, April 22, 1997 7:09 PM > >Does anyone know of any regulatory reason to control the startup surge >current >to ITE units? We have measured this startup current to be up to 90A for the >first half cycle of applied voltage. The unit is cord set connected and uses >four switching power supplies and has a rating of 100-120/220-240V 7/3.5A. > >Do safety agencies (UL/CSA/TUV) ever measure this start up current as part of >a >certification investigation? >++ >Thanks, >Paul Herrick >[email protected] >
