Yes, we were applying the discharges too rapidly. Faster than 1 per 10
seconds did not allow adequate discharge. faster than 1 per 60 seconds
still did not allow adequate discharge.
So that's 10 minutes a discharge point....and still the test was not
adequate for the intent of the test.
- Robert -
-----Original Message-----
From: [email protected] <[email protected]>
To: [email protected] <[email protected]>;
[email protected] <[email protected]>
List-Post: [email protected]
Date: Tuesday, January 18, 2000 6:16 AM
Subject: RE: EN 61000-4-2
>
>
>
>You are perhaps applying the discharges too fast in sequence. It is quite
>appropriate to wait for the unit to "drain" the previously applied charge
>before applying the next.
>
>=======================================================
>
>
>
>
>[email protected] on 01/18/2000 01:14:12 AM
>
>Please respond to [email protected]
>
>
>To: "Jacowleff, Bill" <[email protected]>
>cc: "'[email protected]'" <[email protected]>
> [email protected] (bcc: Robert E. Heller/US-Corporate/3M/US)
>Subject: RE: EN 61000-4-2
>
>
>
>
>
>Bill,
>
>We have found that stepping up through the test voltages can give
>misleading
>results. Our products are plastic cased, and they appear to 'charge' as
>the
>test voltages are applied. The result is a pass if 10kv (for example) is
>applied by stepping in 2kv steps, but a fail if 10kv is applied directly.
>
>Perhaps both methods should be used?
>
>Cheers,
>
>Carlos.
>
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