Hi EMC-PSTC Community,Is hipot test parameters for 220-240VAC 20A single phase,
same for 220-240VAC 100A single phase permanently connected product?
Test setting for 220-240 VAC 20A single phase
DCW Voltage = 2121VdcImax = 35.00mATest Ramp = 2.0 secDwell Time = 10.0 sec
-Frank
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ety & Regulatory Affairs Consultant
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<mailto:p.perk...@ieee.org> p.perk...@ieee.org
From: Doug Powell
Sent: Wednesday, August 15, 2018 1:40 PM
To: Pete Perkins ; EMC-PSTC
Subject: Re: [PSES] hipot test
P
ultant
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201
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p.perk...@ieee.org
From:
Jim Hulbert
Sent:
Wednesday, August 15, 2018 5:25 AM
To:
EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
I disagree with your NRTL. If the hipot test can degrade the insu
nt
>
> PO Box 23427
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> Tigard, ORe 97281-3427
>
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> 503/452-1201
>
>
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> IEEE Life Fellow
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> p.perk...@ieee.org
>
>
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> *From:* Jim Hulbert
> *Sent:* Wednesday, August 15, 2018 5:25 AM
> *To:* EMC-PSTC@LISTSERV.IEEE.ORG
> *Sub
Fellow
p.perk...@ieee.org <mailto:p.perk...@ieee.org>
*From:*John Woodgate
*Sent:* Wednesday, August 15, 2018 12:14 PM
*To:* Pete Perkins ; EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* Re: [PSES] hipot test
in the UK, the requirements are in fact very woolly, and it's
difficult to find definitiv
To:* EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* Re: [PSES] hipot test
I think it's not quite like that. Modern insulating materials don't
degrade, but old ones did, or at least appeared to. For instance,
oiled paper had pinholes, and a discharge caused local carbonization,
which prompted more discha
ct: Re: [PSES] hipot test
I think it's not quite like that. Modern insulating materials don't degrade,
but old ones did, or at least appeared to. For instance, oiled paper had
pinholes, and a discharge caused local carbonization, which prompted more
discharges and more carbonization.
John Woo
sultant
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201
IEEE Life Fellow
<mailto:p.perk...@ieee.org> p.perk...@ieee.org
From: John Woodgate
Sent: Wednesday, August 15, 2018 12:14 PM
To: Pete Perkins ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
I think it's not quite like that. Modern insulating materials don't
degrade, but old ones did, or at least appeared to. For instance, oiled
paper had pinholes, and a discharge caused local carbonization, which
prompted more discharges and more carbonization.
John Woodgate OOO-Own Opinions
in the UK, the requirements are in fact very woolly, and it's difficult
to find definitive information on the Web. But testing doesn't have to
be done annually, and hi-pot only in cases of repair of hired-out
equipment. Unfortunately, insulation resistance testing, with PASS
values even below
.
In both situations, the transient voltages are likely to be microseconds
duration.
Best regards,
Rich
From: Ken Javor
Sent: Wednesday, August 15, 2018 9:34 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
There is a huge difference between a transient lasting
If the hipot test can degrade the insulation (we’re talking about a single test
on the production line), then the insulation system is not up to par.
Good point!
Best regards,
Rich
-
This message is from
Their claim is that the hipot can degrade some insulation and should be kept to
a minimum.
Conventional wisdom not supported by science.
Best regards,
Rich
-
This message is from the IEEE Product Safety
From: Ken Javor
Sent: Wednesday, August 15, 2018 9:34 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
There is a huge difference between a transient lasting microseconds and a dc
application. The cap will load (to some extent) a transient, but it can't
load dc.
Ken Javor
Pho
ed, 15 Aug 2018 09:03:57 -0700
To:
Subject: Re: [PSES] hipot test
All, This discussion goes around year after year.
The test results reported especially Nute show that it
takes dozens, maybe hundreds of hipot tests to damage adequate insulation.
In
ant
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201
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<mailto:p.perk...@ieee.org> p.perk...@ieee.org
From: Jim Hulbert
Sent: Wednesday, August 15, 2018 5:25 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
I disagree with your NRTL. If t
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] hipot test
The NRTL I typically use always runs the hipot test for 60 seconds for type
testing during product certification. The listing reports always specify a 1
second hipot for production line testing 100% of all units. Their claim
to a minimum.
-Dave
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, August 14, 2018 5:34 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] hipot test
Hi Doug:
I've always viewed the purpose of hipot testing as verification only. During
engineering type testing, it is design
: [PSES] hipot test
Hi Doug:
I've always viewed the purpose of hipot testing as verification only.
During engineering type testing, it is design verification.
I disagree. The hi-pot test determines the minimum electric strength of the
insulation system. Design is an indirect measure of electric
Hi Doug:
I've always viewed the purpose of hipot testing as verification only. During
engineering type testing, it is design verification.
I disagree. The hi-pot test determines the minimum electric strength of the
insulation system. Design is an indirect measure of electric
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