Sir Even with Kelvin leads, ground continuity measurements, even using a really nice digital multimeter, may not be appropriate if you are testing for compliance to an IEC60950-based standard. Also, milliohm-ranged measurements tend to be susceptible to each individual's technique.
Note that CSA's version of this test requires that you dump mucho mondo current (typically around 30A to 40A) through the path for 120 seconds. The "true way" to qualify a protective earthing path is to measure the voltage drop across the current injection points and calculate the resistance. (Do you smell that? Melting insulation, son. Nothing else in the world smells like that. I love the smell of mellting PVC insulation in the morning...) luck, Brian > -----Original Message----- > From: [email protected] > [mailto:[email protected]]On Behalf Of Amund Westin > Sent: Thursday, March 10, 2005 11:15 PM > To: EMC-PSTC - Forum > Subject: Milliohm meter > > > We are going to measure grounding / bonding staps, which > shall not exceed > 2.5 milliohm. > Any recommandation for a well good milliohm meter? > > Best regards > Amund Westin, Oslo, NORWAY This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
