Hello Peter: I downloaded the TOS3200 manual to better understand your problem.
When the TOS3200 is in "meter mode," the terminals A-B comprise an ammeter (without the body impedance network). This will yield a higher current than in the TC (touch current) mode. I'm not sure if A-B can have the body impedance network switched in, although this is implied in Figure 4-11. For a two-wire (double-insulated) product, there is no earth wire so you cannot use the outlet for the measurement. You must use the A-B terminals. The connections to a two-wire product are shown in "b" of Figure 4-7. Hope this helps. Best regards, Rich > -----Original Message----- > From: Peter Tarver > [mailto:ptar...@enphaseenergy.com] > Sent: Monday, April 24, 2017 4:49 PM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: [PSES] Kikusui TOS3200 Leakage Current Meter > > Hello. > > I am using a Kikusui TOS3200 to measure touch current for > a 61010-1 application. > > The product is double-insulated and has accessible USB port > connector shells connected to the secondary circuit > reference. > > When using the TOS3200 in meter mode (using the two > external meter leads), I obtain different results than if I > measure using the faceplate 5-15R outlet and one external > meter lead. For each test, I'm using the same measurement > networks when attempting to correlate the results. > > When using the outlet, the meter lead connects to the USB > shell. > > When in meter mode, I am connecting one lead to the USB > connector shell and one lead to the power conductor of > interest. > > Has anyone experienced this with either the TOS3200 or > other leakage/touch current meters? > > FWIW, the manual does not indicate any special > considerations are needed when using meter mode. > > The instrument is in good condition and went through a > calibration verification in AUG2016. > > The currents are within "Measurement range setting Range > 1," but the meter is set in auto range mode. I plan some > additional experiments using defined ranges, rather than > auto in the next day or so. > > > Peter Tarver - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
