The GE GT Digital Energy Series UPS is a completely uninterrupted power supply. It effectively protects your equipment from getting
How exactly does a UPS emergency power system work and why…do you need one?
Most of our clients who are computer professionals or otherwise work in datacenters are savvy as to why they need a backup power supply for servers. However, if you come to IT from the software side—or if you’re not an electrical engineer or technician—what exactly your UPS power conditioner with battery backup does and why it’s needed might surprise you. Conversely, if you’re expert in the how & why of your UPS battery backup system, then maybe you can pass this article on to one of your stakeholders who needs and wants to know.
As to the why…
The AC current produced by utility companies in America is 60 Hz (cycles per second), meaning that it changes polarity 60 times per second. Doing so (in the case of 120 VAC), the voltage actually goes up and down from +120 to -120 volts in that split second, a range of 240 volts. It’s the same for other voltages you might have in your computer datacenter, whether single-phase or three-phase.
If you were to apply an oscilloscope to that current, you would see that these up & down excursions form a classic sinusoidal wave. But because power grid technology was developed mostly in the early 20th Century, it is not particularly friendly to 21st Century computers or mission-critical equipment. There are instances when line voltage is greater than it should be, called surges and spikes; and there are times when it’s less than it should be, called sags.
Surges, spikes, and sags will distort the sinusoidal wave you see on the oscilloscope. (This is why technicians and engineers speak of “sinusoidal purity” when discussing the slings & arrows of your AC power supply.) A toaster, hairdryer, vacuum cleaner, or electric stove is oblivious to these distortions. But commercial and industrial computers, highly-sophisticated manufacturing apparatus, and a raft of medical equipment are not so tolerant. They shut down in the face of voltage variations, which can be inconvenient at best and fatal at worse.
As to the how…
There are three kinds of industrial UPS systems or commercial UPS systems.
In this sort of UPS battery backup system, the battery pack is always connected to the inverter, so that no power transfer switches are necessary that might contaminate the “sinusoidal purity” of the AC current. During a complete power outage, the rectifier simply drops out of the circuit, leaving the battery pack to keep the power steady and unchanged. When power is restored, the rectifier resumes carrying most of the load while recharging the battery pack.
So what’s the upshot?
Because it’s best at maintaining the “sinusoidal purity” of the AC current, an online double-conversion uninterruptible power system is best for applications where electrical isolation is necessary, and/or for equipment that is very sensitive to voltage sags and dips and voltage surges and spikes.
In effect, it provides an “electrical firewall” between the incoming utility power and your sensitive electronic equipment.
N1 Critical Technologies engineers & technicians offer more than a decade of experience designing industrial UPS systems, commercial UPS systems, UPS systems for server rooms, and whole-building UPS systems.
Our clients include virtually every size and type of facility or enterprise that depends on an uninterruptible power supply system, including data centers, financial institutions, medical clinics, hospitals, office complexes, call centers, telecom centers, server rooms, server closets and more.
Beyond being your go-to source for the entire range of industrial UPS system and commercial UPS system equipment, we’re experts at bridging the gap between the articulated needs of your IT professionals and the economic constraints of efficiently running your business. How so?
We leverage our practical experience designing high-quality power backup systems and other emergency uninterruptible power supply systems with our intimate knowledge of the specifications, capabilities, and service histories of the entire range of UPS products and systems available to you. The net effect?
We can show you how to meet or exceed the technical parameters desired by your IT professionals in the most cost-effective manner, using the UPS products and systems that will provide the most robust uninterruptible power supply solution at the optimal price point.
Changing your UPS batteries every 4 years can prevent 90% of all UPS outages.
N1 Critical Technologies offers a full 3 year warranty on all UPS and battery sales.
N1 Critical Technologies offers a 4 hour guaranteed response time in over 98% of the United States.