: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, August 20, 2007 6:50 AM
To: ri...@ieee.org; emc-p...@ieee.org
Subject: RE: Ground Fault Circuit Interrupter tripping
Thanks for the great information. Let me see if I'm
comprehending it correctly.
- A product can pass
...@san.rr.com
Sent: Friday, August 17, 2007 2:17 PM
To: emc-p...@ieee.org
Subject: RE: Ground Fault Circuit Interrupter tripping
Hello John:
I've never measured the 'frequency response' (trip current vs.
frequency) of a GFCI (they don't occur in UK, we have RCCBs) but I
suspect that the trip
Hello John:
I've never measured the 'frequency response' (trip current vs.
frequency) of a GFCI (they don't occur in UK, we have RCCBs) but I
suspect that the trip current is higher than the design value
at higher
frequencies.
As far as I know, there is no frequency compensation in
the
In message 002a01c7df65$11f135a0$6a01a8c0@PC323541548743, dated Wed,
15 Aug 2007, rn...@san.rr.com writes:
For the benefit of the members of this group (you know the answer as
well as I do)...
Yes, hence the smiley. But I thought it was worth explaining.
I've never measured the 'frequency
Hello John:
For the benefit of the members of this group (you
know the answer as well as I do)...
Leakage
current is measured with a leakage current
meter that doesn't read the higher harmonics
Why? Don't the harmonics (and SMPS effluent) contribute to
shock hazard?
The leakage
In message 002301c7df4f$163d3930$6a01a8c0@PC323541548743, dated Wed,
15 Aug 2007, rn...@san.rr.com writes:
Leakage
current is measured with a leakage current
meter that doesn't read the higher harmonics
Why? Don't the harmonics (and SMPS effluent) contribute to shock hazard?
(;-)
--
OOO -
To: brian_ku...@lecotc.com
Cc: EMC PSTC
Subject: Re: Ground Fault Circuit Interrupter tripping
Hello Brian,
I have run into a similar problem. The VFD is generating
harmonics which are likely causing additional leakage
current. If your product's leakage current is due to
Y-capacitors
In message
0ed66cd2c9bd0a459d54fb9119a605676f4...@mailserver.lecotc.com, dated
Wed, 15 Aug 2007, Kunde, Brian brian_ku...@lecotc.com writes:
Can anyone recommend a manufacturer of GFCI that would be more immune
to such false trips?
Have you asked the drive manufacturer? You won't be the first
Hello Brian,
I have run into a similar problem. The VFD is generating harmonics which
are likely causing additional leakage current. If your product's leakage
current is due to Y-capacitors, you may have had a clean power source. In
one situation, I had a product that significantly increased
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