Looking for VAX6000 items

Brian Roth abacos_98 at yahoo.com
Wed Jul 14 06:43:14 CDT 2021


 

>Interesting. Were the power supplies 3 phase input? Like you I have 
>noticed that most pdp and vax gear just pull 120 volt legs off the 3 
>phase to balance power loads. So you can run them on a couple of 120 
>circuits. Outside of say the RP07 (which is a real 3 phase motor)


The 6000 is not like that. After the inlet box the three phases go to the power conditioner which has a 3-phase thyristor controlled rectifier. From there its 300v up to the regulators. I remember my 11/780 was like you described.

  


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