Dear All,
I have not received any response to my original e-mail !
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PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26 Hacharoshet St., POB 211
Or Yehuda 60251, Israel
Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019
Mobile: + 972-(0)54-838175
http://www.itl.co.il
http://www.i-spec.com
> -----Original Message-----
> From: Peter Merguerian
> Sent: Tuesday, August 06, 2002 6:38 PM
> To: EMC-PSTC (E-mail)
> Subject: ITE DC Powered Equipment Earthing Test
>
> Dear All,
>
> Clause 2.6.3.3 of the UL60950 Third Edition standard specifies:
>
> If the curent rating of the circuit under test exceeds 16A, the test
> current and the duration of the test are:
>
> - two times the current rating of the circuit for the time durations noted
> below (table not included here)
> -or as specified by the manufacturer for dc powered equipment.
>
> I am not sure what the second dashed paragraph means. How can a
> manufacturer of dc powered equipment decide the test current and the time?
>
> There is a similar requirement in the IEC 60 950 standard where the test
> current is twice the raing of the circuit for 2 minutes. However, the way
> this standard is written, seems to indicate that the dc powered equipment
> manufacturer can decide on the test duration ONLY of the test which is
> perfoprmed always at twice the current rating of the circuit.
>
> Any input to clarify the intent of the requirement would be greatly
> appreciated.
>
>
>
> This e-mail message may contain privileged or confidential information. If
> you are not the intended recipient, you may not disclose, use,
> disseminate, distribute, copy or rely upon this message or attachment in
> any way. If you received this e-mail message in error, please return by
> forwarding the message and its attachments to the sender.
>
>
>
> PETER S. MERGUERIAN
> Technical Director
> I.T.L. (Product Testing) Ltd.
> 26 Hacharoshet St., POB 211
> Or Yehuda 60251, Israel
> Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019
> Mobile: + 972-(0)54-838175
> http://www.itl.co.il
> http://www.i-spec.com
>
>
>
>
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