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Author Topic: Is this guy nuts???  (Read 6406 times)
KC9PRE
Member

Posts: 40




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« Reply #15 on: March 21, 2011, 07:14:46 AM »

THIS IS A New 3CX10,000A7 CONSOLE UNIT. Output power 15000+ watts 450 watts bird and 1000 peak will give you 15Kw+ RMS output and 25Kw Peak..Tube - 3CX10,000 test full power output Transmit/Receive switching 60 + Amps open Vacuum relay Power-line requirements 200/240 Vac 50/60 HZ 50+ or - Amps at 240 Vac Power Supply Heavy duty 3.5 peak amp steel core transformer and high capacitance grade filter capacitor, also features time delay starting to protect

 Where did you see this thing? Do you have a link to it?
google wizardbuilt.com
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AD4U
Member

Posts: 2151




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« Reply #16 on: March 21, 2011, 11:36:08 AM »

The 3CX*****A7 family of tubes (3CX10,000A7, 3CX15,000A7, and 3CX20,000A7) are air cooled triodes that can be run in the grounded grid cathode driven  configuration, similar to the more common 3CX1500A7 (8877) used in certain Alpha and Ameritron amps for example.  

Assuming it is run in a properly constructed amp, a 3CX15,000A7 will deliver around 20-25KW out with 1500 watts drive.

I am not advocating this, but there are HAMs (not just CBer's) who run this much power.

Dick  AD4U

« Last Edit: March 21, 2011, 07:01:27 PM by AD4U » Logged
G3RZP
Member

Posts: 4358




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« Reply #17 on: March 22, 2011, 09:21:38 AM »

But getting that much power out of the mains on single phase is not easy....
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AA4HA
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Posts: 1377




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« Reply #18 on: March 22, 2011, 10:29:07 AM »

50 amps at 240 volts is 12kW - with unity PF. So 15kW out means he really has something there!

Unless it is three phase power. I would be surprised if it was not.

Ms. Tisha Hayes
AA4HA
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Ms. Tisha Hayes, AA4HA
Lookout Mountain, Alabama
G3RZP
Member

Posts: 4358




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« Reply #19 on: March 23, 2011, 11:12:04 AM »

240 volt three phase isn't that common.
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AA4HA
Member

Posts: 1377




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« Reply #20 on: March 23, 2011, 11:51:39 AM »

If it was a commercial radio transmitter it would be. Most of those sites bring in three phase power.

Tisha
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Ms. Tisha Hayes, AA4HA
Lookout Mountain, Alabama
W4PC
Member

Posts: 268


WWW

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« Reply #21 on: March 28, 2011, 06:25:26 AM »

If it was a commercial radio transmitter it would be. Most of those sites bring in three phase power.

Tisha

I knew you were a broadcast engineer... it shows Wink
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KG6WLS
Member

Posts: 507




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« Reply #22 on: March 28, 2011, 11:05:31 AM »

If it was a commercial radio transmitter it would be. Most of those sites bring in three phase power.

Tisha

I knew you were a broadcast engineer... it shows Wink

Just don't mistakingly use that stinger leg for a 120V piece of equipment. POOF...
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AD4U
Member

Posts: 2151




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« Reply #23 on: March 29, 2011, 09:41:53 AM »

240 volt three phase isn't that common.

At my shop (where my main HAM shack is located) I have a 240 volt 200 amp single phase service.  From the P=EI formula 240V X 200A = 48,000 Watts.  That means I COULD run a 48,000 watt amp on my single phase service.  Granted 3 phase would be a better option, but it can be done on a single phase service.  In fact the local power company will supply up to a 400 amp (96,000 watt) residential service if needed.

Dick AD4U
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G3RZP
Member

Posts: 4358




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« Reply #24 on: March 30, 2011, 01:54:36 AM »

Over here, single phase is not usually more than 100 amps at 220. Something that size would be run off three phase 415 volts. The HV PSU is easier on 3 phase, too.

How do they handle regulation on a 400 amp single phase supply? How close do they have the transformer?
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