[AMPS] Millen HV Connectors Factory Pricing

PAUL HEWITT wd7s@att.net
Tue, 20 Nov 2001 17:35:24 -0600


I hate to agree with Phil (HI HI) but
I've also had several of the Millen
connectors fail at 4200vdc.
Mounted in oversize hole (sanded smooth)
and nylon hardware.  Big badda boom!!
Stopped using them.
Paul

PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net





I really get my caps charged (he-he!)
about all the bantering regarding the
Millen hv connectors. I`ve been using
reds&whites in both of my 4pr1000a
amps for over 25 years with no problems
at 5500vdc in one amp, 6700vdc in
the other! I think a lot of problems
start with poor design & workmanship as
I`ve sure seen a lot of hashed together
amps some people try to build!
Something I discovered several years
ago: Belden # 734710 7mm metalic spark
plug wire,availiable at NAPA auto
suppliers, great for hv amp wiring.
I really can`t figure why anyone would
want to run shielding on any hv
wiring.. for one thing I would never run
hv cabling where the operator(me!)
could get near it when energized and who
in his right mind would handle hv
cable (or any other hv) without pulling
the plug& bleeding the hv?
Really folks, it tickles me reading some
of the lame subject matter on this
reflector... Now don`t take me wrong...
I am no expert on building amps,but
I take pride in good craftmanship and
thats paid off for me over the years!
73 all around, Jim K7RDX


> > I have been down that road also,
Paul! I solved the problem years ago
when
> > I
> > started mounting the
> > socket to the chassis a bit
differently. I drill a hole in the
chassis
> > slightly
> > smaller than the width of the
> > socket. I then fashion a rectangle
of  1/4" plexiglass slightly larger
> > than the
> > dimensions of the socket. A
> > hole is then drilled in the center
of the plexiglass slightly larger
than
> > the
> > shaft of the socket. Then
> > 2- #6 holes are drilled through the
plexiglass and chassis to match the
> > mounting
> > holes on the socket.
> > This gives C. 1/4 inch separation
between the socket and chassis. I have
> > had
> > zero failures since I
> > changed the mounting scheme. Every
failure previous to the change was
> > right
> > where yours was;
> > where the shaft of the socket passes
through the chassis. I would never
> > dream of
> > pushing the
> > ratings above 6 kv. on the red or
black units. The yellow units should
> > never be
> > used > 1 kv,
> > IMO.
> [Steve Katz]  Don't know about the 1kV
rating, sounds pretty skinny.
> But I've seen the blue corona
(darkened room) around Millen HV sockets
only
> when improper mounting hardware was
used or the socket installed with such
> mounting force (stainless machine
screws torqued to within a hair of
> breaking) that the Millen socket
material began cracking.  When I install
> the connectors myself, I've never had
a problem.  Same sockets and plugs
> used on HT PSUs here since 1967-68 in
many cases.  Highest voltage on any
of
> them is 4400V, though.  Never tried
6-7kV.  Never used "tetrodes with
> handles," either!
>
> WB2WIK/6
> > (((73)))
> > Phil, K5PC


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