PDU
Recent posts
What is a zombie (comatose) server, and why should I care?
Posted by Annie Paquette on October 28, 2019
Server Technology takes zombie servers very seriously. They are one of the scariest incidents to run across in the data center because they can kill any chances of cost savings. That in itself is enough to make any Halloween spooky...
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What to Consider When Choosing a Power Distribution Unit
Posted by Annie Paquette on December 20, 2012
Considering Power Distribution Units (PDU) for your data center racks and IT equipment should require much more thought than simply selecting a ‘power-strip’ hardware configuration. If you care about Green energy initiatives and desire to save on electricity cost by making the most efficient use of the energy you use, ...
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Ask the Engineer- Will Branch Circuit Protection Eliminate Concern for Tripping an Upstream Breaker?
Posted by Annie Paquette on November 29, 2010
The combined load of branches on a power strip may be capable of exceeding the upstream input protection. There is a fundamental misunderstanding of the purpose of the power strip internal fuse protection. The fuses are not there to keep the upstream breaker from tripping. Circuit protection within the power ...
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Ask the Engineer- Is branch circuit protection on a 20 amp rated power strip required in North America?
Posted by Annie Paquette on November 29, 2010
The question at large- "Is branch circuit protection on a 20 amp rated power strip required in North America?"
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The Secret to Safe, Affordable 3 Phase Power Distribution
Posted by Annie Paquette on August 21, 2014
Up until now, you were able to power your servers and applications using a 30A single phase, 208V power distribution unit (PDU) that contained two 20A circuit breakers. This power cord feeding this PDU contained two power wires and a ground wire. In order to properly distribute 30A of power ...
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Ask the Engineer- How do I calculate power from 3-phase LED readings?
Posted by Annie Paquette on October 09, 2010
The question at large- "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?"
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- How To
A Few Words About Replacing Fuses and Resetting Circuit Breakers
Posted by Annie Paquette on April 08, 2013
As a Systems Engineer who spends a fair amount of time responding to inquiries received through our Technical Support department I often hear "The PDU blew a fuse. I replaced it but it blew again. Something is wrong with the PDU. Please send me a new one." Would that we could, but the PDU is doing what it should. In this blog, Servertech will talk about why fuses blow and circuit breakers trip, and how to respond to re-energize the outlet branch safely and effectively.
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Ask the Engineer- How do I get 120V from a 208V circuit?
Posted by Annie Paquette on February 22, 2013
The question at large- Does Servertech have any PDUs that can convert down from 208V to 120V for those handful of legacy devices that "require" 120V?
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- How To
- PDU
- rack PDU
- single phase PDU
Ask The Engineer- Should Neutral Conductors Be Oversized?
Posted by Annie Paquette on December 16, 2009
The question at large- "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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- CDU
- PDU
- Power Distribution Unit
5G's 'G-wiz' Environment
Posted by Annie Paquette on August 20, 2019
Unlike other much-hyped technologies that contributed very little improvements to our every-day lives, 5G networks are poised to have a dramatic and positive impact throughout the world in the very near term. Those who benefit from 5G services do not have to be the bearer of a thousand-dollar smartphone, they will realize its benefits through enhanced health, security, and transportation services -- just to name a few.
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