nanog mailing list archives
Re: Japan electrical power?
From: Robert Bonomi <bonomi () mail r-bonomi com>
Date: Wed, 11 May 2011 14:10:31 -0500 (CDT)
From nanog-bounces+bonomi=mail.r-bonomi.com () nanog org Wed May 11 13:22:18 2011 Date: Wed, 11 May 2011 14:21:30 -0400 Subject: Re: Japan electrical power? From: Jay Nakamura <zeusdadog () gmail com> To: Robert Boyle <robert () tellurian com> Cc: nanog () nanog org On May 11, 2011 10:09 AM, "Robert Boyle" <robert () tellurian com> wrote:Hello, I know voltage varies from town to town and prefecture to prefecture.No, it doesn't. Japan has two systems, both 100v, western Japan has 60Hz, eastern Japan has 50Hz.
'Nominal' voltage, that is. with relatively poor regulation. 'local' variation +/-10% (or more) is the norm. Handling +/-15% will cover practically all 'routine' volatage excursions. If I was designing, I'd spec for at least 25%, and probably "30% plus", variance.
Current thread:
- Japan electrical power? Robert Boyle (May 11)
- Re: Japan electrical power? Lamar Owen (May 11)
- Re: Japan electrical power? Jay Nakamura (May 11)
- Re: Japan electrical power? Robert Bonomi (May 11)
- Re: Japan electrical power? William Herrin (May 11)