Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail
From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Grand Apagon - Electricity (not) in Spain
Date: Thu, 8 May 2025 15:38:05 -0700
Organization: A noiseless patient Spider
Lines: 58
Message-ID: <vvjbog$265vt$2@dont-email.me>
References: <vuqgef$1of93$1@dont-email.me> <vv0bp3$34itv$3@dont-email.me>
 <vv25ad$r3ti$1@dont-email.me> <7gehelxbkf.ln2@Telcontar.valinor>
 <6hcc1k57rk5plu40u8l8qd1oq471hmnqip@4ax.com> <vv5jdv$1pp$1@dont-email.me>
 <0mnc1ktrd7v0qvpi062rf5lbemp6f4pk8a@4ax.com> <vv5q3r$647n$1@dont-email.me>
 <vv6vjh$19ddn$2@dont-email.me> <ff3kelxmm6.ln2@Telcontar.valinor>
 <vv8i6e$2o41i$1@dont-email.me> <6r0lelx0c8.ln2@Telcontar.valinor>
 <vv990t$3gsv4$1@dont-email.me> <kvkmelxf9k.ln2@Telcontar.valinor>
 <6cgh1k9mkuae63gn4dd8ej49o3au4m0l67@4ax.com>
 <1rbvfbs.10nr9w6pkdoawN%liz@poppyrecords.invalid.invalid>
 <vvckil$2k8fj$1@dont-email.me> <sn4pelxjs.ln2@Telcontar.valinor>
 <vvcv7e$2tnvd$1@dont-email.me> <ajrpelxjql.ln2@Telcontar.valinor>
 <vve0b0$3r29s$1@dont-email.me> <8brrelxb35.ln2@Telcontar.valinor>
 <vvfiir$10k3s$1@dont-email.me> <ic0selx3dm.ln2@Telcontar.valinor>
 <vvfmht$11iac$1@dont-email.me> <evtselxgev.ln2@Telcontar.valinor>
 <vvgonn$19stn$1@dont-email.me> <mhluelx12o.ln2@Telcontar.valinor>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 09 May 2025 00:38:09 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="95ebf2c2c0fefff1842d8dfd62a529c6";
	logging-data="2299901"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1/Ply/M8xMdaONFivgOnBW1"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101
 Thunderbird/102.2.2
Cancel-Lock: sha1:jkj1hlW//wphagFSow0y6Qw4X2U=
Content-Language: en-US
In-Reply-To: <mhluelx12o.ln2@Telcontar.valinor>
Bytes: 4133

>>> My mobile phone worked all the day, I could send and receive whatsapp messages.
>>
>> Are those processed "locally"?
> 
> No. I don't know if they have centralized server or distributed.

Some have "content distribution networks".

>>> I have a small computer doing server things, and it tried to email me as 
>>> soon as the UPS said it was running on battery. That email did not reach me 
>>> till the power came back; this could be that the fibre went OOS, or that the 
>>> UPS at my router went down instantly. I do not know.
>>
>> Doesn't your UPS deliver log messages (to a syslog server or data
>> dumps to an FTP service)?
> 
> The one on the server did, yes, but the one on the router doesn't have that 
> facility.

I used to think syslogd support was just another gimmick.  But,
I've come to appreciate being able to find ALL of the logs
on ONE server (that is always up).  Hard to examine a log on
a device that won't boot, etc.

>> I have each of mine configured to give me summaries of power consumption
>> and line conditions each minute.  And, use a syslogd on that same server.
> 
> I don't think any of mine can report power usage.

IIRC, they report:
Date/Time
Vmin/Vmax (input)
Vout/Iout
%Wout/%VAout/%capacity
Frequency
Vbat
Internal temperature
"external" temperature & humidity (intended for use in a server room)

>> Charging at a slower rate and to a lower float voltage would
>> compromise the UPS's availability -- but provide less maintenance costs
>> (of course, the manufacturer wants to sell you batteries, so you
>> can see where their priorities will lie!)
> 
> Indeed.
> 
> I saw in an Eaton model they mentioned two strategies - translated from Spanish:
> 
> UPS Topology: Standby (Offline) or Standby (Offline)
> 
> Eaton Ellipse ECO 650 IEC SAI Offline 650VA 400W
> Eaton P/N: EL650IEC

I have a couple of eatons in the garage.  I didn't like them for
use in the office as their fans (run continuously) are louder
than I would like (and I have no desire to go tweaking fans)