Happy New Year to All,

I would like to ask the opinion of all members regarding compliance 
criteria for the Overvoltage Tests in on TNV lines connected to 
exposed plant. UL1950 states that after the OV Tests, unit must 
comply with the Dielectric Voltage Withstand Tests or Leakage 
Current Tests.

Assuming that after the OV Tests, some internal traces of the 
board opened and caused slight charring on the PCB and the unit 
passed all applicable Dielectric Voltage Withstand Tests, would 
this be cosnidered an acceptable result?

Looking forward to hearing from all members on this sensitive issue.



PETER S. MERGUERIAN
MANAGING DIRECTOR
PRODUCT TESTING DIVISION
I.T.L. (PRODUCT TESTING) LTD.
HACHAROSHET 26, P.O.B. 211
OR YEHUDA 60251, ISRAEL

TEL: 972-3-5339022
FAX: 972-3-5339019
E-MAIL: [email protected]
Visit our Website: http://www.itl.co.il

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