RE: Mains Current Montoring

[<rich_lists@xxxxxxxxxx>]

Seems the same as https://www.centameter.co.nz/order.php
which is also a lo=
t
cheaper there.
=20
Some have gone on trademe.co.nz for $99 NZ so it seems for a change we end
up getting the sweet deal over here.
=20
Anyway, a friend tried on his  server rack at a co-lo facility to see how
much he was really using, it seemed reliable enough but there was no real
way to confirm it, but it did reveal that he was able to drop back to a
single 10A drop for the whole rack rather then the 3 he was paying for.
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From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Jim Noble
Sent: Wednesday, December 28, 2005 12:40 PM
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Mains Current Montoring
=20

Anyone seen this?:

www.electrisave.co.uk

> The parts which make up the electrisave:
> The electrisave comprises:
> a sensor
> wireless transmitter
> receiver (monitor)
> How all the electrisave parts work together:
>
> The sensor is a clip-on current transformer that samples the
electric=20
> current on each active phase wire inside your switchboard.
> These readings are aggregated and relayed by the 433 MHz wireless=20
> transmitter to the remote receiver/monitor. The receiver computes
the=20
> approximate power use; energy cost and greenhouse gas generation
and=20
> displays the results on a large portable LCD screen. Consumers can=20
> input specific country currency and voltage, electricity tariff
rate,=20
> greenhouse gas conversion factor and peak load alarm value.


There are extra sensors for 3-phase supplies. In theory it ought to be=20
possible to use the transmitter with a generic 433MHz receiver (ISTR=20
seeing a generic one designed for use with the common 433Mhz temperature=20
sensors kicking around) to sample the current on at least 3 circuits...

It might also be possible to do something with the sensors directly.

It's not cheap though. =A380 for the main unit, and a tenner for each=20
additional sensor...

Jim







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