[AusNOG] Power audit

[James Braunegg]

Dear All

We had a custom PDU developed which gives us 48 X c13 power sockets in a Zero RU horizontal PDU 32amp Single or 3 phase with individual  CT metering on all 48 c13 sockets which allows us to graph power consumption every 5 seconds via SNMP polling very accurately in almost real time and provide fantastic historical power usage information.

Each PDU also has inbuilt memory and web interface for power consumption and historical information (if you don’t want to poll the device independently)

For each socket we can read KWH, KW, Current, Voltage, PF and Hz. Each PDU is 1840mm long 66mm wide and 61mm deep (the rail itself is only 40mm deep the extra 16mm is where the circuit breaker protrudes)

Kindest Regards


James Braunegg
W:  1300 769 972  |  M:  0488 997 207 |  D:  (03) 9751 7616
E:   james.braunegg at micron21.com<mailto:james.braunegg at micron21.com>  |  ABN:  12 109 977 666

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From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Matt Whitlock
Sent: Tuesday, June 04, 2013 8:31 PM
To: adamn at eyemedia.com.au
Cc: ausnog at ausnog.net
Subject: Re: [AusNOG] Power audit

> They will normally clamp a meter over the active back at the switch board (easier to get to)...


Only if the data centre provider will allow access to the switch board as well. Often they won't allow it or they insist on it being their electrical contractor that accesses the switchboard in a maintenance window.

On 04/06/2013, at 19:46, adamn at eyemedia.com.au<mailto:adamn at eyemedia.com.au> wrote:
Generally you can ask a qualified electrician (ask for one that does do work for the datacenter you are in).

They will normally clamp a meter over the active back at the switch board (easier to get to) BUT that is dependant on your datacenter following the correct wiring procedures etc. (single circuit back to a mainboard).

They can then take a reading over time for you.

Regards,
Adam Niedzwiedzki

c: eye media australia pty ltd
a: suite 16, 96 manchester rd, mooroolbark, victoria, 3138, au, earth
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w: http://www.eyemedia.com.au<http://www.eyemedia.com.au/>



From:        Alastair Waddell <awaddell at legion.com.au<mailto:awaddell at legion.com.au>>
To:        ausnog at ausnog.net<mailto:ausnog at ausnog.net>,
Date:        04/06/2013 07:15 PM
Subject:        [AusNOG] Power audit
Sent by:        "AusNOG" <ausnog-bounces at lists.ausnog.net<mailto:ausnog-bounces at lists.ausnog.net>>
________________________________



Hi All,

Warning: much ignorance about all things power related.

I'm wondering if I can commission a power audit of a rack-load of gear.

Who might provide such a service?
Can it be done without powering down?

ie Power person attaches something around each AC cord and reports amps drawn. The sum should approximate what my provider bills which would address concern #1 and the individual results should let me identify any miscreant device which would address concern #2



Regards,
--
Alastair Waddell
Legion Internet
Australia

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