Re: [PSES] EMC tests called up in Safety standards

Pete Perkins said: "Historically, the HV impulse tests applied are safety tests." Safety-wise, HV tests of safeguard insulations are to determine that the safeguard insulations will withstand the normally-occurring transient voltages that occur on the mains circuits. I wouldn't call

Re: [PSES] EMC tests called up in Safety standards

Further to Scott’s post, the required illumination is at 20V/m at the EUT, rather than the more commonly used 10 V/m (I don’t know the 60335-1 requirement). As Scott mentions, the intent in this case is to make certain the inverter remains functional, less so that it remain in a safe condition

Re: [PSES] EMC tests called up in Safety standards

One common cause of nuisance tripping is EMI line filters whose input capacitance to ground biases GFCIs near the tripping point. I would never power up a computer on a GFCI circuit, asking for trouble. No high voltage pulses needed. Doug Smith Sent from my iPhone IPhone: 408-858-4528 Office:

Re: [PSES] EMC tests called up in Safety standards

Hi James, The UL safety standard for PV inverters, UL 1741, makes normative reference to IEEE 1547 and IEEE 1547.1 in Section 46. IEEE 1547.1, in clause 5.5 on interconnection integrity, makes normative reference to IEEE C37.90.2, which has test requirements for withstand capability to radiated

Re: [PSES] EMC tests called up in Safety standards

James, The interoperability of equipment continues to get more complicated as switching technology spreads more ubiquitously. It is well known that electronic protection devices (including RCDs & GFCIs) are suffering 'nuisance' tripping which seems to be inadequately

Re: [PSES] EMC tests called up in Safety standards

Hello all, Thanks for all the interesting replies, much appreciated. All the best James From: Gert Gremmen; ce-test Sent: 21 March 2018 11:07 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] EMC tests called up in Safety standards The EMC tests as called

Re: [PSES] EMC tests called up in Safety standards

If I remember correctly, the text in 60335 was prompted by an incident in Denmark where a toaster incorrectly switched on due to EMI. Since the work was done under pressure, it might not have been done in the most appropriate way, but the end-result is as intended. John Woodgate OOO-Own

Re: [PSES] EMC tests called up in Safety standards

The EMC tests as called out in 60335  are safety tests, contrary to those called out under the EMCD that are functional tests only. For Europe , one can discuss about the necessity of those tests, as the EMCD  requires testing in all operating modes including OFF or standby and  as long as one