What is the safety issue that mandates hi-pot testing anyway? What
failure of insulation or clearance/creepage could create a shock hazard?
( I don't think hi-pot has anything to do with fire hazard.)
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2018-08-13 21:21, Ken Javor wrote:
Re: [PSES] X & Y Cap rating due to hipot test More on this topic.
The basic question is, “what is the prupose of hipot testing?”
The context is a 28 Vdc brush motor that needs some caps to filter
brush noise. Looking at some quell/eeseal chip caps on an insertable
template that fits in the connector shell. I contend that could be
inserted after hipot testing, so that the insert caps don’t have to be
rated to 1000 volts. The 1000 volt rating limits the selection of
available caps.
As I understand it, hipot testing ensures safety by verifying
sufficient separation between different conductors. Why would it be
necessary to apply a hipot test to a connector insert?
Thank you,
Ken Javor
Phone: (256) 650-5261
------------------------------------------------------------------------
*From: *Ken Javor <[email protected]>
*Date: *Fri, 10 Aug 2018 15:13:23 -0500
*To: *"[email protected]" <[email protected]>,
<[email protected]>
*Conversation: *[PSES] X & Y Cap rating due to hipot test
*Subject: *Re: [PSES] X & Y Cap rating due to hipot test
Thank you,
Ken Javor
Phone: (256) 650-5261
------------------------------------------------------------------------
*From: *Doug Powell <[email protected]>
*Reply-To: *Doug Powell <[email protected]>
*Date: *Fri, 10 Aug 2018 13:41:40 -0600
*To: *<[email protected]>
*Subject: *Re: [PSES] X & Y Cap rating due to hipot test
Ken,
Yes and No, the line to line "X" caps will not see hipot potentials
since you should tie lines and neutral together during the test. Line
to earth "Y” caps will see the entire voltage during the test. This
assumes of course you have manually closed any circuit breakers,
contractors or switches that may otherwise isolate the equipment
internals.
All the best, Doug
--
Douglas E Powell
[email protected]
https://www.linkedin.com/in/dougp01
Sent from my Android on the Verizon 4G LTE Network
*From:* [email protected]
*Sent:* August 10, 2018 12:44 PM
*To:* [email protected]
*Reply-to:* [email protected]
*Subject:* [PSES] X & Y Cap rating due to hipot test
Does a 1000 V insulation resistance test requirement force
line-connected caps to the high pot potential?
Thank you,
Ken Javor
Phone: (256) 650-5261 <tel:(256)6505261>
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