Re: [PSES] Need a switch

2018-04-04 Thread Brian O'Connell 
Uhhh, no, that should be 1500Vdc. Although my power source did go insane for a 
few cycles where the switch had to commutate 2500V peak.

Brian

-Original Message-
From: Brian O'Connell [mailto:oconne...@tamuracorp.com] 
Sent: Wednesday, April 04, 2018 10:54 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch

Did a switch for 1500kVdc that required 6kV dielectric withstand. Used two sets 
of two relays in series, each rated 1500V, actuated through optoisolators. 
Including input and output terminals, was about 20cm x 18cm x7cm. The peak load 
was 280mA, and 10mA continuous. After about 250 power cycles, replaced relays 
for another 200 cycles (completion of test). 'Static' DC switching can be 
stressful to most anything, including MOSFETS.

Brian


From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Wednesday, April 04, 2018 7:39 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch

Purpose is to reverse polarity on the charged line in a MIL-STD-461 CS115 
transient generator.  The charged line can charge as high as 2 kV for use, but 
the actual capability is 2.8 kV (2 kVrms output transformer).

Ken Javor
Phone: (256) 650-5261


From: "Grasso, Charles" <charles.gra...@dish.com>
Reply-To: "Grasso, Charles" <charles.gra...@dish.com>
Date: Wed, 4 Apr 2018 14:32:18 +
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Conversation: [PSES] Need a switch
Subject: Re: [PSES] Need a switch

Reminds me of a Frankenstein-like experiment. What exactly is this switch for 
Ken :-D  ??


From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, April 04, 2018 12:50 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch

This message originated outside of DISH and was sent by: 
owner-emc-p...@listserv.ieee.org

I once had a DPDT knife switch with ceramic base and insulators. Rather big, 
though.

John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk <http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2018-04-04 04:01, Richard Nute wrote:


Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.

Tough specs.

Good luck,
Rich

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Re: [PSES] Need a switch

2018-04-04 Thread Brian O'Connell 
Did a switch for 1500kVdc that required 6kV dielectric withstand. Used two sets 
of two relays in series, each rated 1500V, actuated through optoisolators. 
Including input and output terminals, was about 20cm x 18cm x7cm. The peak load 
was 280mA, and 10mA continuous. After about 250 power cycles, replaced relays 
for another 200 cycles (completion of test). 'Static' DC switching can be 
stressful to most anything, including MOSFETS.

Brian


From: Ken Javor [mailto:ken.ja...@emccompliance.com] 
Sent: Wednesday, April 04, 2018 7:39 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch

Purpose is to reverse polarity on the charged line in a MIL-STD-461 CS115 
transient generator.  The charged line can charge as high as 2 kV for use, but 
the actual capability is 2.8 kV (2 kVrms output transformer).

Ken Javor
Phone: (256) 650-5261


From: "Grasso, Charles" <charles.gra...@dish.com>
Reply-To: "Grasso, Charles" <charles.gra...@dish.com>
Date: Wed, 4 Apr 2018 14:32:18 +
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Conversation: [PSES] Need a switch
Subject: Re: [PSES] Need a switch

Reminds me of a Frankenstein-like experiment. What exactly is this switch for 
Ken :-D  ??
 

From: John Woodgate [mailto:j...@woodjohn.uk] 
Sent: Wednesday, April 04, 2018 12:50 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch
 
This message originated outside of DISH and was sent by: 
owner-emc-p...@listserv.ieee.org 

I once had a DPDT knife switch with ceramic base and insulators. Rather big, 
though. 

John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk <http://www.woodjohn.uk> 
Rayleigh, Essex UK
On 2018-04-04 04:01, Richard Nute wrote:

 
Hi Ken:
 
I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.
 
Tough specs.
 
Good luck,
Rich

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Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Ken Javor 
That sounds an awful lot like what Ed Price suggested: ³high voltage ceramic
wafer switches.²  A search for those produces variations on what John
Woodgate described below.

Ken Javor
Phone: (256) 650-5261




From: John Woodgate <j...@woodjohn.uk>
Reply-To: John Woodgate <j...@woodjohn.uk>
Date: Wed, 4 Apr 2018 16:41:45 +0100
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch

   You may have to make what you want. Take a 3 inch square of rigid plastic
(not acrylate, in case you get an arc) about 1/4 inch thick. Cut out a 2
inch disc from the middle. Install four contact studs near the corners of
the square. On the disc, fix a spindle (non-conducting) to turn it and  two
arcuate strips of (preferably) phosphor-bronze, to make contact with two
pairs of adjacent studs. A 90 degree rotation changes the connections as you
want. Supporting structure for the spindle and square left to your
ingenuity. You might be able to make it a bit smaller than I suggest.
 
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk <http://www.woodjohn.uk>
Rayleigh, Essex UK
 
On 2018-04-04 16:24, Ken Javor wrote:
 
 
>  Re: [PSES] [BULK]  Re: [PSES] Need a switch I have some of those but highly
> undesirable as the high voltage would be directly exposed to operator contact.
>  
>  Ken Javor
>  Phone: (256) 650-5261
>  
>  
>  
>  
> 
> From: "Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
> <mailto:dave.nyffeneg...@bhemail.com>
>  Reply-To: "Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
> <mailto:dave.nyffeneg...@bhemail.com>
>  Date: Wed, 4 Apr 2018 12:48:28 +
>  To: <EMC-PSTC@LISTSERV.IEEE.ORG> <mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
>  Conversation: [BULK]  Re: [PSES] Need a switch
>  Subject: Re: [PSES] [BULK]  Re: [PSES] Need a switch
>  
>  That¹s what I was thinking but I didn¹t dare say it.
>   
>  
>  From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
>  Sent: Wednesday, April 04, 2018 8:25 AM
>  To: EMC-PSTC@LISTSERV.IEEE.ORG
>  Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch
>   
>  I¹m picturing a huge knife switch from a Frankenstein movie I saw as a kid.
>  The Other Brian
>   
>  
>  From: Richard Nute [mailto:ri...@ieee.org]
>  Sent: Tuesday, April 03, 2018 11:01 PM
>  To: EMC-PSTC@LISTSERV.IEEE.ORG
>  Subject: [BULK] Re: [PSES] Need a switch
>  Importance: Low
>   
>   
>   
>  Hi Ken:
>   
>  I interpret your requirement as DPDT, with 3 kV withstand between open
> contacts as well as 3 kV from conductors to accessible parts such as the
> switch lever.
>   
>  Tough specs.
>   
>  Good luck,
>  Rich
>   
>   
>   
>  -
> 
>  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> <mailto: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) <http://www.ieee-pses.org/list.html>
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>  
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>  
>  For policy questions, send mail to:
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>  David Heald <dhe...@gmail.com> <mailto:dhe...@gmail.com>
>   
>  
>  
> 
>  
> 
>  LECO Corporation Notice: This communication may contain confidential
> information intended for the named recipient(s) only. If you received this by
> mistake, please destroy it and notify us of the error. Thank you.
>  -
> 
>  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> <mailto: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 graphi

Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread John Woodgate 
You may have to make what you want.Take a 3 inch square of rigid plastic 
(not acrylate, in case you get an arc) about 1/4 inch thick. Cut out a 2 
inch disc from the middle. Install four contact studs near the corners 
of the square. On the disc, fix a spindle (non-conducting) to turn it 
and  two arcuate strips of (preferably) phosphor-bronze, to make contact 
with two pairs of adjacent studs. A 90 degree rotation changes the 
connections as you want. Supporting structure for the spindle and square 
left to your ingenuity. You might be able to make it a bit smaller than 
I suggest.


John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-04-04 16:24, Ken Javor wrote:
Re: [PSES] [BULK]  Re: [PSES] Need a switch I have some of those but 
highly undesirable as the high voltage would be directly exposed to 
operator contact.


Ken Javor
Phone: (256) 650-5261




*From: *"Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
*Reply-To: *"Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
*Date: *Wed, 4 Apr 2018 12:48:28 +
*To: *<EMC-PSTC@LISTSERV.IEEE.ORG>
*Conversation: *[BULK]  Re: [PSES] Need a switch
*Subject: *Re: [PSES] [BULK]  Re: [PSES] Need a switch

That’s what I was thinking but I didn’t dare say it.


*From:* Kunde, Brian [mailto:brian_ku...@lecotc.com]
*Sent:* Wednesday, April 04, 2018 8:25 AM
*To:* EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* Re: [PSES] [BULK] Re: [PSES] Need a switch

I’m picturing a huge knife switch from a Frankenstein movie I saw as a 
kid.

The Other Brian


*From:* Richard Nute [mailto:ri...@ieee.org]
*Sent:* Tuesday, April 03, 2018 11:01 PM
*To:* EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* [BULK] Re: [PSES] Need a switch
*Importance:* Low



Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open 
contacts as well as 3 kV from conductors to accessible parts such as 
the switch lever.


Tough specs.

Good luck,
Rich



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*LECO Corporation Notice:**This communication may contain confidential 
information intended for the named recipient(s) only. If you received 
this by mistake, please destroy it and notify us of the error. Thank you.

*-

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-


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Instructions: ht

Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Ken Javor 
Agree!

Ken Javor
Phone: (256) 650-5261



From: Edward Price <e...@jwjelp.com>
Reply-To: Edward Price <e...@jwjelp.com>
Date: Wed, 4 Apr 2018 15:26:59 +
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Conversation: [BULK]  Re: [PSES] Need a switch
Subject: Re: [PSES] [BULK]  Re: [PSES] Need a switch

A knife switch isn¹t impressive until you feel you need to use a 6-foot long
broomstick to actuate it.
 
BTW, I think the best choice for Ken¹s application is a ceramic wafer
switch; like the kind that were used to select taps on baluns and RF
transmitter loading coils.
 

Ed Price
WB6WSN
Chula Vista, CA USA
 

From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Wednesday, April 04, 2018 5:48 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch
 
That¹s what I was thinking but I didn¹t dare say it.
 

From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Wednesday, April 04, 2018 8:25 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch
 
I¹m picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian
 

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low
 
Hi Ken:
 
I interpret your requirement as DPDT, with 3 kV withstand between open
contacts as well as 3 kV from conductors to accessible parts such as the
switch lever.
 
Tough specs.
 
Good luck,
Rich
 
 
-


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Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Edward Price 
A knife switch isn't impressive until you feel you need to use a 6-foot long 
broomstick to actuate it.

BTW, I think the best choice for Ken's application is a ceramic wafer switch; 
like the kind that were used to select taps on baluns and RF transmitter 
loading coils.

Ed Price
WB6WSN
Chula Vista, CA USA

From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Wednesday, April 04, 2018 5:48 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch

That's what I was thinking but I didn't dare say it.

From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Wednesday, April 04, 2018 8:25 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch

I'm picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low

Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.

Tough specs.

Good luck,
Rich



-

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Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Ken Javor 
I have some of those but highly undesirable as the high voltage would be
directly exposed to operator contact.

Ken Javor
Phone: (256) 650-5261




From: "Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
Reply-To: "Nyffenegger, Dave" <dave.nyffeneg...@bhemail.com>
Date: Wed, 4 Apr 2018 12:48:28 +
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Conversation: [BULK]  Re: [PSES] Need a switch
Subject: Re: [PSES] [BULK]  Re: [PSES] Need a switch

That¹s what I was thinking but I didn¹t dare say it.
 

From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Wednesday, April 04, 2018 8:25 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch
 
I¹m picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian
 

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low
 
 
 
Hi Ken:
 
I interpret your requirement as DPDT, with 3 kV withstand between open
contacts as well as 3 kV from conductors to accessible parts such as the
switch lever.
 
Tough specs.
 
Good luck,
Rich
 
 
 
-

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Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Nyffenegger, Dave 
That's what I was thinking but I didn't dare say it.

From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Wednesday, April 04, 2018 8:25 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] [BULK] Re: [PSES] Need a switch

I'm picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low



Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.

Tough specs.

Good luck,
Rich



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Re: [PSES] Need a switch

2018-04-04 Thread Ken Javor 
Purpose is to reverse polarity on the charged line in a MIL-STD-461 CS115
transient generator.  The charged line can charge as high as 2 kV for use,
but the actual capability is 2.8 kV (2 kVrms output transformer).

Ken Javor
Phone: (256) 650-5261



From: "Grasso, Charles" <charles.gra...@dish.com>
Reply-To: "Grasso, Charles" <charles.gra...@dish.com>
Date: Wed, 4 Apr 2018 14:32:18 +
To: <EMC-PSTC@LISTSERV.IEEE.ORG>
Conversation: [PSES] Need a switch
Subject: Re: [PSES] Need a switch

Reminds me of a Frankenstein-like experiment. What exactly is this switch
for Ken :-D  ??
 

From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, April 04, 2018 12:50 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch
 
 This message originated outside of DISH and was sent by:
owner-emc-p...@listserv.ieee.org

I once had a DPDT knife switch with ceramic base and insulators. Rather big,
though. 

John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk <http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2018-04-04 04:01, Richard Nute wrote:
>  
>  
> Hi Ken:
>  
> I interpret your requirement as DPDT, with 3 kV withstand between open
> contacts as well as 3 kV from conductors to accessible parts such as the
> switch lever.
>  
> Tough specs.
>  
> Good luck,
> Rich
>  
>  
>  
> -
> 
> 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) <http://www.ieee-pses.org/list.html>
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Re: [PSES] Need a switch

2018-04-04 Thread Grasso, Charles 
Reminds me of a Frankenstein-like experiment. What exactly is this switch for 
Ken :-D  ??

From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: Wednesday, April 04, 2018 12:50 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Need a switch


 This message originated outside of DISH and was sent by: 
owner-emc-p...@listserv.ieee.org<mailto:owner-emc-p...@listserv.ieee.org>
I once had a DPDT knife switch with ceramic base and insulators. Rather big, 
though.


John Woodgate OOO-Own Opinions Only

J M Woodgate and Associates www.woodjohn.uk<http://www.woodjohn.uk>

Rayleigh, Essex UK
On 2018-04-04 04:01, Richard Nute wrote:


Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.

Tough specs.

Good luck,
Rich



-


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Re: [PSES] [BULK] Re: [PSES] Need a switch

2018-04-04 Thread Kunde, Brian 
I'm picturing a huge knife switch from a Frankenstein movie I saw as a kid.
The Other Brian

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, April 03, 2018 11:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [BULK] Re: [PSES] Need a switch
Importance: Low



Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open contacts 
as well as 3 kV from conductors to accessible parts such as the switch lever.

Tough specs.

Good luck,
Rich



-


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Re: [PSES] Need a switch

2018-04-04 Thread John Woodgate 
I once had a DPDT knife switch with ceramic base and insulators. Rather 
big, though.


John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-04-04 04:01, Richard Nute wrote:

Need a switch

Hi Ken:

I interpret your requirement as DPDT, with 3 kV withstand between open 
contacts as well as 3 kV from conductors to accessible parts such as 
the switch lever.


Tough specs.

Good luck,

Rich

-


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Re: [PSES] Need a switch

2018-04-03 Thread Richard Nute 
 

 

Hi Ken:

 

I interpret your requirement as DPDT, with 3 kV withstand between open
contacts as well as 3 kV from conductors to accessible parts such as the
switch lever.

 

Tough specs.

 

Good luck,

Rich

 

 

 


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