IBM 305 RAMAC PRELIMINARY INSTALLATION DATA

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-04376A000100090034-6
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 12, 2016
• Document Release Date: May 17, 2002
• Sequence Number: 34
• Publication Date: June 13, 1957
• Content Type: MISC

IBM
G
DA'proved For Rele
PROCESSING
FROM: Director of Marketirq
IBM 305 RAMAC
PRELIMINARY INSTALLATION DATA
The IBM 305 RAMAC: Pre-Installation Manual will be ready for di~tributIonin a-fewmonths
In the meantime, use,the `information in this letter to review the physical planning status of
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each 305
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: ,Be sure each customer's Installation area will be,ready to ac
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F ,ER 257-71
se 2002/06/26: CIA-RDP78-0437M00jp9 Oj4-6
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Approved For Release 2002/06/26 : CIA-RDP78-04376A000100090034-6
 Approved For Release 2002/06/26 : CIA-RDP78-04376A000100090034-6
Letter 257-71
- 2 -
2. Weight and Dimensions
Unit
Weight
In lbs.
Length In
Inches
Width In
Inches
Height in
Inches
305
Processing Unit
1450
62
32
72
323
Punch
670
44
32
51
340
Power Supply
2000
32 ~
32
72
350
Disk Storage
1730
62
32
72
.370
Printer
1010
57
32
42
380
Console
850
0
32
47
Utility Table
120
39
32
29
*Dimensions are to the nearest Inch.
3. Power Requirements
The 305 RAMAC will operate from either a 208 or 230 volt,
60 cycle, 3 phase power source. The source power must
remain within a plus or minus 10% of the rated voltage (either
208 or 230 volts).
Power i s supplied to the system by two power cords, one to the
340 Power Supply, and one to the 350 Disk Storage.
Approximate KVA and Current.
Unit KVA 208 Volts 230 Volts
340 17.3 48 amperes 44 amperes
350 2.5 7 amperes 7 amperes
There Is also an electric clock on the Console that requires a 115 volt AC tine and
outlet.
4. Power Cord Plugs and Receptacles
Wall Receptacle
Service Size Plug Connector Manufacturer and
Unit Phase Lmj Wire Manufacturer Part # Part #
340 3 60 4 Hubbell 7302 Hubbell 7301
350 3 30 ? 4 Hubbell 21415 Hubbell 20403
The customer must install either the above receptacles or their equivalent.
Approved For Release 2002/06/26 : CIA-RDP78-04376A000100090034-6
 Approved For Release 2002/06/26 : CIA-RDP78-04376A000100090034-6
Letter 257-71 -3
5. Approximate Heat Disspation and Air Flow
Unit
Heat Dissipation
(BTU/hour)
Air Moved by
Blowers (CFM)
Maximum Allowable
Air Temp. Rise (F)
305
37,600
1,300
30 degrees
323
1,400
No blowers
30 degrees
340
4,000
No blowers
30 degrees
350
9,000
No blowers
30 degrees
370
3,000
No blowers
30 degrees
380
3,000
No blowers
30 degrees
Total
58,000 BTU
1,300 CFM
6. Operating Requirements
The'temperature of the air entering the RAMAC must be maintained
between 50 and 90 degrees Fahrenheit. The humidity of the air in
the RAMAC area'must be maintained, under 80% relative. The
humidity limitations should not be exceeded during either operational
or non-operational time. . .
Before final arrangements are made, check with your Regional Physical Planning En-
gineer to be certain that none of the information provided above has been changed.
R. T. Samuel
Approved For Release 2002/06/26 : CIA-RDP78-04376A000100090034-6