Brian,

Basically, you need to conduct a reserve polarity test.

Ramon Torres, P.E.
Manager
International EMC & NEBS Services

Underwriters Laboratories Inc.
2600 N.W. Lake Road
Camas, WA 98607-8542, USA
(P) 360-817-5544  (F) 360-817-6034
Email:  [email protected]

UL - Working for a Safer World



                                                                                
                                              
                    "Brian O'Connell"                                           
                                              
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                    11/14/2002 02:23 PM                                         
                                              
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                    "Brian O'Connell"                                           
                                              
                                                                                
                                              
                                                                                
                                              



Good People of PSTC:


Clause 1.4.5 of EN60950:2000 states "When testing equipment for d.c. only,
the possible influence of polarity shall be taken into account."


What test conditions can be infered from this sentence?


R/S,
Brian O'Connell
Taiyo Yuden (USA), Inc.









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