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Based in Amanzimtoti,  Kwa Zulu Natal, South Africa, Techknowledge is a one stop/full service information technology solutions provider focusing on the business as well as technical drivers around IT solutions unique to our clients.
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 UNINTERRUPTIBLE POWER SUPPLY

Complete turnkey Power Solutions for small, medium and large companies are designed and implemented. This will include uninterrupted power supply solutions including power generators, distribution boards and full articulation.

Installing an uninterrupted power supply solution will alleviate the problems caused by fluctuating supply and power outages. A UPS system will enable the correct saving process to be adhered to and for all non essential equipment to be correctly switched off while keeping essential equipment up and running.

The UPS system correct for your operation will take into account the length of time necessary to bridge national supply and the amount of equipment necessary to be kept live at all times.

How does a computer's uninterruptible power supply (UPS) work?

What your computer expects to get from the power grid (in South Africa) is 220/230-volt AC power oscillating at 50 Hertz (see How Power Distribution Grids Work for more information). A computer can tolerate slight differences from this specification, but a significant deviation will cause the computer's power supply to fail. A UPS generally protects a computer against four different power problems:

* Voltage surges and spikes - Times when the voltage on the line is greater than it should be

* Voltage sags - Times when the voltage on the line is less than it should be

* Total power failure - Times when a line goes down or a fuse blows somewhere on the grid or in the building

* Frequency differences - Times when the power is oscillating at something other than 60 Hertz

There are two common systems in use today: standby UPS and continuous UPS. A standby UPS runs the computer off of the normal utility power until it detects a problem. At that point, it very quickly (in five milliseconds or less) turns on a power inverter and runs the computer off of the UPS's battery (see How Batteries Work for more information). A power inverter simply turns the DC power delivered by the battery into 220/230-volt, 50-Hertz AC power.

In a continuous UPS, the computer is always running off of battery power and the battery is continuously being recharged. You could fairly easily build a continuous UPS yourself with a largish battery charger, a battery and a power inverter. The battery charger continuously produces DC power, which the inverter continuously turns back into 220/230-volt AC power. If the power fails, the battery provides power to the inverter. There is no switch-over time in a continuous UPS. This setup provides a very stable source of power

Standby UPS systems are far more common for home or small-business use because they tend to cost about half as much as a continuous system. Continuous systems provide extremely clean, stable power, so they tend to be used in server rooms and mission critical applications.

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