8 Mar
2004
8 Mar
'04
7:23 a.m.
On Mon, 8 Mar 2004 Paul Koning <pkoning(a)equallogic.com> wrote:
Sounds about right.
>>>> "Guy" == Guy Sotomayor <ggs(a)shiresoft.com> writes:
Guy> Hi, Does anyone know how much 3-phase power (at say 220v) a
Guy> KL-10 requires?
Guy> I just acquired some commercial space to move my collection into
Guy> and I noticed today that there are several 220v 3-phase power
Guy> drops that I hadn't noticed previously. I'm kind of hoping that
Guy> I'll have enough 3-phase to be able to start resurecting my
Guy> KL-10, but I need to know how much I need.
I remember a big plug rated at probably at least 50 amps. One suggestion would be to check the name plates
either on the chassis
near the power inlets, or on the power supplies. You might also use
the power cable and plug dimensions as a guideline; find the current
rating of the cable used for the power inlet. That should be somewhat
over the actual amount needed but not massively so -- power syhstem
designers don't usually overdesign cables by large margins.
Yes, they do.
The VAX8600 was targeted at large IBM sites, so they put in an oversized
power cable and receptacle, that was the same as for the IBM equipment
they planned to replace.
So the 8650 I have here have a cable and receptacle specified for
410V@32A/phase, but it runs just fine on 16A/phase.
And our KL-10 sat on this *huge* 410V@63A/phase thingie. That receptacle
was just large enough to be silly. And the power cable is not something
you carry around in your hand...
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
8 Mar
8 Mar
7:11 a.m.
On Mon, 8 Mar 2004, Johnny Billquist wrote:
The VAX8600 was targeted at large IBM sites, so they
put in an oversized
power cable and receptacle, that was the same as for the IBM equipment
they planned to replace.
Yeah, check it out:
http://www.siconic.com/computers/vax3.jpg
It's bigger than my hand.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
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9 Mar
9 Mar
1:03 a.m.
Geez Sellam, is that a Vax power cable or an elephant trunk?! hehe. It
looks big enough to replace receptacles of a hook-up for an emergency power
generator to a house, damn...
-John Boffemmyer IV
At 01:11 PM 3/8/2004, you wrote:
On Mon, 8 Mar 2004, Johnny Billquist wrote:
----------------------------------------
Founder, Lead Writer, Tech Analyst
and Web Designer Boff-Net Technologies
http://boff-net.dhs.org/index.html
---------------------------------------
The VAX8600 was targeted at large IBM sites, so
they put in an oversized
power cable and receptacle, that was the same as for the IBM equipment
they planned to replace.
Yeah, check it out:
http://www.siconic.com/computers/vax3.jpg
It's bigger than my hand.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at
http://marketplace.vintage.org ] 
2:55 a.m.
The connection between the units looks like an old transit coupler
(Lindall?) and is only slightly smaller.
On Tue, 9 Mar 2004, John Boffemmyer IV wrote:
Geez Sellam, is that a Vax power cable or an elephant
trunk?! hehe. It
looks big enough to replace receptacles of a hook-up for an emergency power
generator to a house, damn...
-John Boffemmyer IV
At 01:11 PM 3/8/2004, you wrote:
--
M. K. Peirce
Rhode Island Computer Museum, Inc.
Shady Lea, Rhode Island
"Casta est quam nemo rogavit."
- Ovid
On Mon, 8 Mar 2004, Johnny Billquist wrote:
----------------------------------------
Founder, Lead Writer, Tech Analyst
and Web Designer Boff-Net Technologies
http://boff-net.dhs.org/index.html
---------------------------------------
The VAX8600 was targeted at large IBM sites, so
they put in an oversized
power cable and receptacle, that was the same as for the IBM equipment
they planned to replace.
Yeah, check it out:
http://www.siconic.com/computers/vax3.jpg
It's bigger than my hand.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at
http://marketplace.vintage.org ] 
3:52 a.m.
>>>> "Vintage" == Vintage
Computer Festival <vcf(a)siconic.com> writes:
Vintage> On Mon, 8 Mar 2004, Johnny Billquist wrote:
> The VAX8600 was targeted at large IBM sites, so
they put in an
> oversized power cable and receptacle, that was the same as for the
> IBM equipment they planned to replace.
Vintage> Yeah, check it out:
Vintage> http://www.siconic.com/computers/vax3.jpg
Vintage> It's bigger than my hand.
I think those are called "Russell-Stoll" connectors -- standard
industrial grade connectors especially for high current 3 phase
power.
The cable doesn't look all that fat, not as bad as the KL-10 cable I
remember. It should be marked with a wire gauge and wire type (for
example "ST 8AWG" and perhaps a temperature rating. That information
will give you the current rating.
Since copper is expensive, even if the plug is oversize the cable
might not be. The cable in the picture could be a 40 amp 3phase
cable, or somewhere in that range.
By the way, electrical equiment generally has a "name plate" which is
a label with electrical information near where the cable comes into
the cabinet. I'd expect something like that somewhere on the KL-10
power inlet box or power distribution unit. That should answer the
question, or at least give an upper bound.
paul
2:35 p.m.
By the way, electrical equiment generally has a
"name plate" which is
a label with electrical information near where the cable comes into
the cabinet. I'd expect something like that somewhere on the KL-10
power inlet box or power distribution unit. That should answer the
question, or at least give an upper bound.
But electrical switchboxes, used often in large devices, have
their OWN rating, and it's not uncommon to have a switch box
capable of 50A or 100A to be installed on a machine that draws
say 20A at 440. The switchbox is probably an off-the-shelf item,
available as 50A, 100A, 400A, etc. At 220/208 it'll draw twice
that, etc.
The short if it is that the switchbox rating may have little to
do with the power needs of the computer, except that switchbox
rating > computer load.
8:24 a.m.
http://www.siconic.com/computers/vax3.jpg
It's bigger than my hand.
Reminiscent of Hubbell 100A connectors.
See some here:
http://images.grainger.com/images/catalog/395/528.pdf
( p.528 http://www.grainger.com/Grainger/wwg/catalogPDF.shtml )
John A.
7442
days inactive
7443
days old
7 comments
8 participants
participants (8)
-
allain＠panix.com -
at258＠osfn.org -
aw288＠osfn.org -
bqt＠update.uu.se -
john_boffemmyer_iv＠boff-net.dhs.org -
pkoning＠equallogic.com -
tomj＠wps.com -
vcf＠siconic.com