An ohmmeter would be a ground continuity test just to determine if the ground
terminal is connected. It doesn't ensure the efficacy of the bond though.
Ground bond ensures there is a bond from the ground lead to the chassis.
Which test is performed during production is determined by the
John,
I think you are getting your tests mixed up. The Ohm Meter is a Ground
Bond Test but at a very low current. As I said in my earlier email, Annex F
doesn't specify a current value for this test so technically an ohm meter
will do the job and meet the requirement of the 61010-1.
The HiPot
I’m interested in these answers, but UL and Intertek do not require us to do
more than Ground Continuity testing on 100% of the products. The UL/cUL
certified product is an Industrial LCD Monitor (NWGQ, NWGQ7) evaluated to the
ITE standard IEC 60950-1 & CAN/CSA C22.2 No. 60950-1-07, with a
Rich Nute has 3 Technically Speaking columns on this that can be found at the
In Compliance magazine website. The first is here
https://incompliancemag.com/article/derivation-of-ground-impedance/
and I find it quite informative.
Mike Sherman
Graco Inc.
> On 05/12/2021 8:01 AM Wiseman,
I agree with Brian. I've been involved with product safety over 20 yrs and
worked for an NRTL for about 6 of those.
The 40 A requirement came from the Canadian electrical code and all the NRTLs.
The only exemptions I've seen to the 100 % ground bond requirement has been for
Class II and Class
61010-1 § 4.1 says, "Tests in this standard are TYPE TESTS to be carried
out on samples of equipment or parts. Their only purpose is to check that
the design and construction ensure conformity with this standard. In
addition, *manufacturers shall perform the ROUTINE TESTS of Annex F on 100
% of
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