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Robert Faulkner

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Ask the Engineer - How do I get 120V from a 208V circuit?

Posted by Robert Faulkner on Jul 13, 2018 10:00:00 AM

Originally posted February 22, 2013, Updated July 13, 2018

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Topics: PDU, rack PDU, How To, single phase PDU

Get Ahead with StartUp Stick

Posted by Robert Faulkner on Aug 14, 2015 5:00:00 AM

Over the years, we have heard many data center personnel state that DHCP cannot and will not be used for infrastructure pieces like cabinet PDUs. All Server Technology CDUs are shipped with DHCP enabled so that the user can setup the DHCP server to provide IP settings based on MAC address. For those installations where that is not a viable solution, Server Technology has developed the StartUp Stick for quick mass-deployment. Now, instead of walking the floor with a crash-cart and writing scripts to handle the initial network configuration, you can sit in the comfort of your office using our simple spreadsheet configuration tool and then walk the floor with this simple tool instead.

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Topics: CDU, SPM, PDU, IT

Ask the Engineer - How do I calculate power from 3-phase LED readings?

Posted by Robert Faulkner on Oct 9, 2010 9:29:00 AM

Question from Steven G.: How do I calculate the power usage for devices attached to one of your Smart PDU's by looking at the digital readouts on them? I understand the 3-phase power calculation of P=VA*1.73, but is that done on each leg/phase (x,y,z) for the PDU? An example from a CS-24VY-L30MA is X=4.6, Y=4.6, Z=6.3

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Topics: PDU, smart PDU, 3 phase PDU, How To

Ask the Engineer - Do you have any rack-mount UPS recommendations?

Posted by Robert Faulkner on Oct 4, 2010 1:40:00 PM

On occasion, an installation consists of only a few cabinets and it is desirable to place individual UPS units within each cabinet. Although Server Tech does not provide UPS products and remains manufacturer agnostic, there are a couple things that should be considered from the power distribution point of view.

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Topics: rack mount power distribution units

Ask the Engineer - Automatic reboot when a device fails to respond to a ping request?

Posted by Robert Faulkner on Dec 30, 2009 9:23:00 AM

Question from Carlton <omitted>: I have multiple remote DSL modems that each stop working two to three times a week.  I've deployed 2-outlet Sentry Switched CDU units to allow me to remotely reboot them when they hang, and they work great!  But, I have to wait until someone notifies me of the problem, then I have to manually login to the CDU to initiate the reboot.  I've noticed that the DSL modems fail to respond to ping requests when they hang.  Is there a method available to automatically reboot the DSL modems when they stop responding to ping requests? 

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Topics: data center power, CDU

Ask the Engineer - How much power should I provision for my cabinets?

Posted by Robert Faulkner on Dec 30, 2009 8:57:00 AM

This is a common question I receive: How much power should I provision for my cabinets?

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Topics: data center power

Ask The Engineer - Should Neutral Conductors Be Oversized?

Posted by Robert Faulkner on Dec 16, 2009 12:47:00 PM

Question from Jay <omitted>: I am presently evaluating a CDU model #CS-27VY-L30M and have noticed that the power input cordage does not involve an oversized neutral conductor.  All five conductors are 10-gauge AWG.  Isn't an oversized neutral required to avoid the possibility of overheating the conductor?

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Topics: PDU

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