Single-Phase vs Three-Phase Power Explained

Single phase power is:

– Used in most homes and small businesses
– Able to supply ample power for most smaller customers, including homes and small, non-industrial businesses
– Adequate for running motors up to about 5 horsepower; a single phase motor draws significantly more current than the equivalent 3-phase motor, making 3-phase power a more efficient choice for industrial applications

 

 

3-phase power is:

– Common in large businesses, as well as industry and manufacturing around the globe
– Increasingly popular in power-hungry, high-density data centers
– Expensive to convert from an existing single phase installation, but 3-phase allows for smaller, less expensive wiring and lower voltages, making it safer and less expensive to run
– Highly efficient for equipment designed to run on 3-phase

 

 

To illustrate the difference between single phase and three phase, imagine a lone paddler in a canoe. He can only move himself forward while his paddle moves through the water. When he lifts the paddle out of the water to prepare for the next stroke, the power supplied to the canoe is zero.

Now picture the same canoe with three paddlers. If their strokes are synchronized so each is separated by 1/3 of a stroke cycle, the canoe receives constant and consistent propulsion across the water. More power is supplied and the canoe moves across the water more smoothly and efficiently.

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How Do You Choose Between the Different Types of PDUs?

Growing demand for computing power and constraints on physical space have led to even more densely packed rack enclosures. As the number of rack-mounted servers, blade servers, network switches and routers has increased, so has the need for more power in the rack. The ability to deliver this power in the most efficient way while conserving rack space is accomplished by a Power Distribution Unit (PDU).

PDU3MV6H50A PDU is a device with multiple outlets designed to distribute electric power to computers or networking equipment within a rack. For example, a blade server installation consisting of four 7U blade server frames in a 42U rack would require sixteen 20A power supplies! PDUs solve this problem by taking the power supplied to the rack and distributing it via multiple outlets to the rack’s servers and networking equipment.

With seven types of PDUs from which to choose, it can be a challenge to determine which PDU is best for your rack power design. I’ll overview the types and benefits of each PDU in this post to simplify the selection process.

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Prevent Accidental Power Cord Disconnections and Downtime

Did you know that 70% of data center downtime is caused by human error?* Color-coded power cord plugs and plug inserts take the guesswork out of your data center and ensure that staff always know the priority of power connections. [Read more…]

7 Solutions for Powering, Protecting and Controlling Your Video Surveillance System

Security Camera, CCTV on location, airport

Video surveillance is big business. A March 2017 report published by MarketsandMarkets, an international market research firm that serves 1,700 Fortune organizations worldwide, values the video surveillance market at $30.4 billion last year and projects that number to reach $75.6 billion by 2022.

Whether you use your video surveillance system to protect your assets, monitor employee behavior, deter tampering and theft, or lower your insurance rates, you want to be sure it’s reliable. Video surveillance systems can be vulnerable to power problems, such as blackouts, brownouts, surges, and line noise, that can disrupt security cameras and corrupt data. Here are seven solutions to help your system remain functioning at its full potential 24/7. [Read more…]

E-Rate: How School Districts Can Benefit

Did you know funding opportunities are available for school districts seeking to bridge the technology gap and meet the needs of digital learning in the 21st century? Also known as E-Rate, it is one of the nation’s largest programs supporting technology development in education today. [Read more…]