> >
> > Paul.
>
> Yep. I was going through the 5410 parts lists on Bitsavers earlier; it even
> lists
> different part numbers for the fans, 50Hz vs. 60Hz.
>
> So it's frequency converter or bust. Anyone got any specific suggestions?
> Someone earlier vaguely waved about the name 'Elgar'; any ot
I was reporting on the ferroresonants, and nothing else.
--
Will
On Thu, Dec 31, 2015 at 7:33 AM, Paul Berger wrote:
> On 2015-12-31 7:17 AM, Mike Ross wrote:
>>
>> On Jan 1, 2016 12:05 AM, "jwsmobile" wrote:
>>>
>>>
>>>
>>> On 12/30/2015 11:45 PM, Mike Ross wrote:
Thanks for the thou
On Jan 1, 2016 1:34 AM, "Paul Berger" wrote:
>
> On 2015-12-31 7:17 AM, Mike Ross wrote:
>>
>> On Jan 1, 2016 12:05 AM, "jwsmobile" wrote:
>>>
>>>
>>>
>>> On 12/30/2015 11:45 PM, Mike Ross wrote:
Thanks for the thought... my main concern is the System/3s and Henk
Stegeman - who has
On 2015-12-31 7:17 AM, Mike Ross wrote:
On Jan 1, 2016 12:05 AM, "jwsmobile" wrote:
On 12/30/2015 11:45 PM, Mike Ross wrote:
Thanks for the thought... my main concern is the System/3s and Henk
Stegeman - who has forgotten more than most of us will ever know about
S/3! - says that 60Hz S/3 on
On Jan 1, 2016 12:05 AM, "jwsmobile" wrote:
>
>
>
> On 12/30/2015 11:45 PM, Mike Ross wrote:
>>
>> Thanks for the thought... my main concern is the System/3s and Henk
>> Stegeman - who has forgotten more than most of us will ever know about
>> S/3! - says that 60Hz S/3 on 50Hz power is a no-go. Di
On 12/30/2015 11:45 PM, Mike Ross wrote:
Thanks for the thought... my main concern is the System/3s and Henk
Stegeman - who has forgotten more than most of us will ever know about
S/3! - says that 60Hz S/3 on 50Hz power is a no-go. Different voltage,
fine - transformer can be restrapped. Differ
12:00
> > > To: General Discussion: On-Topic and Off-Topic Posts
> > >
> > > Subject: Re: Ferroresonant transformers and 3278
> > >
> > > On Tue, Dec 22, 2015 at 6:55 AM, Alexandre Souza <
> > > alexandre.tabaj...@gmail.com> wrote:
> >
Thanks for the thought... my main concern is the System/3s and Henk
Stegeman - who has forgotten more than most of us will ever know about
S/3! - says that 60Hz S/3 on 50Hz power is a no-go. Different voltage,
fine - transformer can be restrapped. Different frequency... trouble!
And then there are
I bet you (or Mike, actually) could get it to work by trial and error,
swapping in caps. The transformers (generally) are apparently pretty
forgiving - being off in frequency just results in lost efficiency,
maybe 10-15 percent lost at most. Not flames, anyway.
--
Will
On Thu, Dec 31, 2015 at 12:
On 12/30/15 9:29 PM, William Donzelli wrote:
Of course! Find the exception that proves the rule!
;-) However, it would've been nice if it were only necessary to change
the capacitor!
TTFN - Guy
--
Will
On Thu, Dec 31, 2015 at 12:23 AM, Guy Sotomayor wrote:
On 12/30/15 9:06 PM, William
Of course! Find the exception that proves the rule!
--
Will
On Thu, Dec 31, 2015 at 12:23 AM, Guy Sotomayor wrote:
>
>
> On 12/30/15 9:06 PM, William Donzelli wrote:
>>
>> Sorry about digging up a slightly stale thread...
>>
>>> I haven't done any troubleshooting yet but checking the manuals on
On 12/30/15 9:06 PM, William Donzelli wrote:
Sorry about digging up a slightly stale thread...
I haven't done any troubleshooting yet but checking the manuals on
Bitsavers tells me my US 3278s have ferroresonant transformers
specified as 120V 60Hz only. This can be expected to cause problems
Sorry about digging up a slightly stale thread...
> I haven't done any troubleshooting yet but checking the manuals on
> Bitsavers tells me my US 3278s have ferroresonant transformers
> specified as 120V 60Hz only. This can be expected to cause problems
> with 120V 50Hz here in NZ from my knowledg
tis 2015-12-22 klockan 16:45 +1300 skrev Mike Ross:
Finagle's law says 90% of my 3-phase big iron was acquired in the USA
and expects 3-phase 60Hz 208V... :-(
Many machines which did NOT have a ferroresonant transformer
could be run from 50 or 60 Hz with no problem. The one
place it was a pro
On Wed, 23 Dec 2015, Stefan Skoglund (lokal anv�ndare) wrote:
Find a property with its own little water power station ?
And then rebuild the generator into a 60 Hz one.
depending on the generaqtor design, increase the rate of flow of the
water.
tis 2015-12-22 klockan 16:45 +1300 skrev Mike Ross:
> H.
>
> I do have a massive idler motor - as in it takes two people to even
> think about lifting it - from my days in NY when I had to manufacture
> a 3rd phase to make the S/3 and other items work... I wonder if I
> could do anything using
Some VFDs are not just plain PWM pulses, but a stepped sort of thing
that sort-of approximates a sinewave.
As I said, all this depends on what VFD you are using, and what you
might have to act as a filter, and what the load is - a case-by-case
thing.
--
Will
On Tue, Dec 22, 2015 at 12:12 PM, Jon
On 12/22/2015 10:25 AM, William Donzelli wrote:
Another thought - with scrap transformer prices in a crapper right
now. you might also be able to pick up a really beefy isolation
transformer for spare change, in order to clean up a VFD. Generally,
normal industrial grade 50 Hz transformers will n
Another thought - with scrap transformer prices in a crapper right
now. you might also be able to pick up a really beefy isolation
transformer for spare change, in order to clean up a VFD. Generally,
normal industrial grade 50 Hz transformers will not care too much if
you use them at 60 Hz.
--
Wil
gt; -Original Message-
> >> > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of
> Santo
> >> > Nucifora
> >> > Sent: 22 December 2015 12:00
> >> > To: General Discussion: On-Topic and Off-Topic Posts
> >&
12:00
>> > To: General Discussion: On-Topic and Off-Topic Posts
>> >
>> > Subject: Re: Ferroresonant transformers and 3278
>> >
>> > On Tue, Dec 22, 2015 at 6:55 AM, Alexandre Souza <
>> > alexandre.tabaj...@gmail.com> wrote:
>> >
>&g
Behalf Of Santo
> > Nucifora
> > Sent: 22 December 2015 12:00
> > To: General Discussion: On-Topic and Off-Topic Posts
> >
> > Subject: Re: Ferroresonant transformers and 3278
> >
> > On Tue, Dec 22, 2015 at 6:55 AM, Alexandre Souza <
> > alexandre.taba
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Santo
> Nucifora
> Sent: 22 December 2015 12:00
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: Ferroresonant transformers and 3278
>
> On T
On Tue, Dec 22, 2015 at 6:55 AM, Alexandre Souza <
alexandre.tabaj...@gmail.com> wrote:
> That is easy, it is fairly common here. I know of a friend who has some.
>
> Enviado do meu Tele-Movel
> Em 22/12/2015 09:51, "Mike Ross" escreveu:
>
> > Do we have any South American correspondents listenin
Oh then we should talk... do you know what condition they are in and
what power they are designed for? I'd definitely be interested in
getting a couple in good shape - although shipping to NZ would be...
expensive!
Contact me off-list if you like.
Mike
On Wed, Dec 23, 2015 at 12:55 AM, Alexandre
That is easy, it is fairly common here. I know of a friend who has some.
Enviado do meu Tele-Movel
Em 22/12/2015 09:51, "Mike Ross" escreveu:
> On Wed, Dec 23, 2015 at 12:44 AM, Santo Nucifora
> wrote:
> > On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert
> wrote:
> >
> >> On 2015-Dec-22, at 2:28
On Wed, Dec 23, 2015 at 12:44 AM, Santo Nucifora
wrote:
> On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert wrote:
>
>> On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
>> > Ah, a terminal it is! Thank you.
>> >
>> > On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
>> > wrote:
>> >
>> >>> Sincere q
On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert wrote:
> On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
> > Ah, a terminal it is! Thank you.
> >
> > On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> > wrote:
> >
> >>> Sincere query.. as the goog turns up nothing meaningful..
> >>
> >> Try IBM
On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
> Ah, a terminal it is! Thank you.
>
> On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> wrote:
>
>>> Sincere query.. as the goog turns up nothing meaningful..
>>
>> Try IBM 3278.
>>
>> Hint: one of those popular terminal families in the world.
I'd die for a vt100... :)
Enviado do meu Tele-Movel
Em 22/12/2015 08:28, "drlegendre ." escreveu:
> Ah, a terminal it is! Thank you.
>
> On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> wrote:
>
> > > Sincere query.. as the goog turns up nothing meaningful..
> >
> > Try IBM 3278.
> >
> > Hin
Ah, a terminal it is! Thank you.
On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
wrote:
> > Sincere query.. as the goog turns up nothing meaningful..
>
> Try IBM 3278.
>
> Hint: one of those popular terminal families in the world.
>
> --
> Will
>
On Tue, Dec 22, 2015 at 11:07 PM, Christian Corti
wrote:
> On Mon, 21 Dec 2015, William Donzelli wrote:
>>
>> But considering the mix of 50 and 60 Hz stuff you likely have by now
>> (that is what you get for moving!), spending some decent money on a
>> real VFD might be worth it. I might think a c
On 2015-Dec-22, at 2:07 AM, Christian Corti wrote:
> On Mon, 21 Dec 2015, William Donzelli wrote:
>> But considering the mix of 50 and 60 Hz stuff you likely have by now
>> (that is what you get for moving!), spending some decent money on a
>> real VFD might be worth it. I might think a cheap VFD m
On Mon, 21 Dec 2015, William Donzelli wrote:
But considering the mix of 50 and 60 Hz stuff you likely have by now
(that is what you get for moving!), spending some decent money on a
real VFD might be worth it. I might think a cheap VFD may give
ferroresonant iron fits with all those extra harmoni
H.
I do have a massive idler motor - as in it takes two people to even
think about lifting it - from my days in NY when I had to manufacture
a 3rd phase to make the S/3 and other items work... I wonder if I
could do anything using that as a starting point?
Three phase is no problem here... pr
I have heard that some guys have put a motor in the circuit just to
deal with the harmonics as a filter to shore the sine wave up. An
interesting idea, worth a try, but I bet it works on a case-by-case
basis.
--
Will
On Mon, Dec 21, 2015 at 10:12 PM, Jon Elson wrote:
> On 12/21/2015 09:03 PM, Wi
> Sincere query.. as the goog turns up nothing meaningful..
Try IBM 3278.
Hint: one of those popular terminal families in the world.
--
Will
On 12/21/2015 09:03 PM, William Donzelli wrote:
If you can get a rotary one, those are really nice - just wasteful and
loud. With proper maintenance they last forever, can take a beating,
and do not give waveshape issues that cheap solid state units can
have. And, maybe most importantly, you can
For those of use who might have a broad, but more generic technical
knowledge - could you please explain exactly what a "3278" is?
Sincere query.. as the goog turns up nothing meaningful..
On Mon, Dec 21, 2015 at 9:03 PM, William Donzelli
wrote:
> If you can get a rotary one, those are really n
If you can get a rotary one, those are really nice - just wasteful and
loud. With proper maintenance they last forever, can take a beating,
and do not give waveshape issues that cheap solid state units can
have. And, maybe most importantly, you can make one yourself.
But considering the mix of 50
Any recommendations for what type? Are solid-state devices up to the
job these days? I still remember rotary converters...
Mike
On Tue, Dec 22, 2015 at 3:45 PM, William Donzelli wrote:
> In the long term, you should probably break down and get a good size
> frequency converter.
>
> --
> Will
>
>
In the long term, you should probably break down and get a good size
frequency converter.
--
Will
On Mon, Dec 21, 2015 at 9:33 PM, Mike Ross wrote:
> I recently blew up a 3278... it worked ok for a few hours then started
> blowing fuses.
>
> I haven't done any troubleshooting yet but checking th
I recently blew up a 3278... it worked ok for a few hours then started
blowing fuses.
I haven't done any troubleshooting yet but checking the manuals on
Bitsavers tells me my US 3278s have ferroresonant transformers
specified as 120V 60Hz only. This can be expected to cause problems
with 120V 50Hz
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