electro-Physics: 17.3409 voltsZ

Tue Dec 14 16:57:23 CST 2004

On Tue, 14 Dec 2004, Jochen Kunz wrote:

> The 400 Hz three phase current is generated by a motor-generator. The
> rotating mass of this machine is enough to keep the Cyber running for
> some seconds. 

That detail alone justifies it all; simple physics (well,
a lot of iron and copper) makes for a reliable UPS for the
diesel switchover. I don't think APC makes one that size :-)