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Lorenz No. 174602 120 V unknown Umformer
Old 10-07-2017, 04:17 AM   #1
TornFunker
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Default Lorenz No. 174602 120 V unknown Umformer

Hello,

Anyone knows for what is this "Umformer" from C. Lorenz A. G.?

Type: Umformer Lorenz, G.D. EU, Typ: KUS, Prim. 12 V 5 A, Sek. 12 DV, 0,1 A

No. 174602

Is it military or civil?

Pictures: https://goo.gl/sTBNJG

Thank you very much.

TornFunker

Last edited by TornFunker; 10-07-2017 at 04:24 AM.
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Old 10-07-2017, 06:03 AM   #2
Funksammler
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Looks 1950's era to me, any dates on the capacitors?

regards,

Funksammler
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Old 10-07-2017, 06:47 AM   #3
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Hi Funksammler,

Thanks for response, capacitors data:

Capacitor 1 = 20000pf"d" 110/330V Siemens & Halske Logo.

Capacitor 2 = 11C/330V 6662a

Siemens Halske exists until 1962, then it firmed under Siemens AG.

I have some other unknown Umformers with "Fertigungskennzeichen WW2" will post it next time.

Thanks in advance, Torn
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Old 10-07-2017, 08:05 AM   #4
Dufleuve
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Hello,

Interested in seeing the other umformers.

The color applied to the umformer looks post war to me.

Cheers
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Old 10-07-2017, 12:22 PM   #5
Funksammler
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During WW2, capacitors were often dated with the month and year of manufacture, so this is always a good place to look for WW2 dates.

Indeed the lack of dates, the colour and the use of plastic isolation materials all point to post war manufacture. Also I would not know where a three phase 120 Volt would have been used in wartime radio equipment, three phase is usually used for industrial power tools etc.

regards,

Funksammler
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Old 10-17-2017, 03:10 AM   #6
Tornfuté
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Hi all,i just have a look to the pictures , i absolutely don’t agree with FS answer,
It’s wrong .
This motor is the KU3 , not KUS as written in description, it’s well
an WW2 military item, used in the KU3 = kreisel umformer 3
This psu is used in the panther tank for gyro compass purpose, it
convert the 12 V Dc to 3 phases 120 vAC 375 Hz, voltages need
for the type 8 gyro indicator .
It’s not industrial motor , too weak 21 VA, for me industrial motor
are on 380 VAC and larger power , about motor color i have no idea
i must open my KU 3 to see how it looks. The motor base is of bakelite
Pierre
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Old 10-17-2017, 04:18 AM   #7
TornFunker
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Hi Pierre,

Thank you very much, yes, it is KU3 (data plate).

Regards, Torn
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