Interesting. I also noticed this under power requirements.
INPUT POWER REQUIREMENTS NOTE
Although three-phase power is specified, power for this
device is obtained between one phase and neutral. Units
leave the factory wired for 208v, 60Hz or 220v, 50Hz input.
I assumed 3 phase only.
________________________________
From: Al Kossow <aek at bitsavers.org>
To: cctalk at
classiccmp.org
Sent: Thursday, May 9, 2013 11:36 AM
Subject: Re: Control Data 9747
On 5/9/13 5:06 AM, Brian Roth wrote:
Has anyone ever heard of this drive model? It looks
just like the 9746 in the CDC brochure.
The closest thing I see that I have on bitsavers is the BR5A5, which is using the new disk
naming
scheme CDC went to in the mid-70's