Hello Scott,
If you are using an NRTL approved cord, it should already have been properly
tested. The standard used for the cord will depend on the connectrors, cord
type and countries of use.
UL 817 is the standard for cord sets in the United States and it does not give
a specific maximum allowable impedance for the ground connection. It only
requires that the ground continuity be verified. It would be difficult for a
standard to specify the ground impedance. UL 817 covers all cord sets and
power supply cords. This includes extension cords that can be 30 meters or
more in length.
EN 50116 takes into account the fact that there could be a long cord with a
higher impedance for the ground connection. It states that when performing
routine production testing on ITE, you can inlcude the power cord in the test.
If the result exceeds 0.1 Ohms, the impedance of the power cord can be
subtracted from the
--- On Fri, 8/15/08, Scott Xe <scott...@gmail.com> wrote:
From: Scott Xe <scott...@gmail.com>
Subject: Mains cord set
To: emc-p...@ieee.org
Date: Friday, August 15, 2008, 8:42 AM
I have read the safety standards for the requirement about earth
continuity
test on finished product without mains cord. What about the earth continuity
test for mains cord set? For example, IEC 320 C13 connector to UK main plug
or Schuko plug. Is there any standard for this parameter?
Thanks,
Scott
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