nanog mailing list archives
Re: 220v/50hz power rig
From: Lincoln Dale <ltd () interlink com au>
Date: Thu, 06 Sep 2001 03:34:56 -0700
[straying well from the topic here, but ...] At 07:40 PM 6/09/2001 +1000, David Luyer wrote:
(Australia is 240V 50Hz on the east coast, and I think it's still 250V 50Hz on the west coast, it used to be 260V and in some sites [eg, BankWest tower upper floors on weekends, ie, where the microwave gear for the academic network is located] I've seen up to 270V.)
the tolerance is typically +/- 10%, so it isn't uncommon to see anything between 216-264V and HZ +/- 1%.
the +/- range on voltage is also what makes it 'easier' for power-supply makers (at least if the design isn't dependent on HZ).
this is why you typically see multi-range power-supplies state "115V or 230V".HZ moving around causes far more problems -- makes peoples clocks go slow and fast. for that reason, HZ is very tightly regulated - if it goes over for a period, they'll make it go under to even it out.
cheers, lincoln.NB. that is simply WA power and the fact that it is somewhat hard to regulate supply to demand when you've got an isolated grid.
Current thread:
- 220v/50hz power rig Randy Bush (Sep 05)
- Re: 220v/50hz power rig Joel Jaeggli (Sep 05)
- Re: 220v/50hz power rig Jim Popovitch (Sep 05)
- Re: 220v/50hz power rig Jim Mercer (Sep 05)
- Re: 220v/50hz power rig John Fraizer (Sep 05)
- Re: 220v/50hz power rig Jim Mercer (Sep 05)
- Re: 220v/50hz power rig David Lesher (Sep 05)
- Re: 220v/50hz power rig Miquel van Smoorenburg (Sep 06)
- Re: 220v/50hz power rig Alex Bligh (Sep 06)
- Re: 220v/50hz power rig David Luyer (Sep 06)
- Re: 220v/50hz power rig Lincoln Dale (Sep 06)
- Re: 220v/50hz power rig Vadim Antonov (Sep 06)
- Message not available
- Re: 220v/50hz power rig Lincoln Dale (Sep 06)
- Re: 220v/50hz power rig Randy Bush (Sep 06)
- <Possible follow-ups>
- Re: 220v/50hz power rig Sean Donelan (Sep 05)
- Re: 220v/50hz power rig Steven M. Bellovin (Sep 06)
- Re: 220v/50hz power rig Sean Donelan (Sep 06)
- Re: 220v/50hz power rig Kevin Loch (Sep 06)
- Re: 220v/50hz power rig Alex Bligh (Sep 06)