In a message dated 05/08/2000 10:46:59 PM US Eastern Standard Time,
[log in to unmask] writes:
> Can someone tell me what CTI(notCTE) stands for and how to measure. I
> believe but I am not 100% that CTI might stand for Comparative Tracking
Index.
> But still do not understand what the term means.
This is correct. CTI is Comparative Tracking Index. There is an ASTM method
for this although I would have to dig to find it. You might find it at
www.astm.org. It is essentially a water drop test. Place a water drop
between two electrodes on a laminate surface and electrify it. See how long
it takes to go to failure (a short). A cleaner laminate will have a longer
time to failure.
Doug Pauls
CSL
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