F.M.T Power Energy

INVERTER/UPS

UPS

		About UPS Is your power uninterruptible? Think again!... What is a UPS? An Uninterruptible Power Supply is a device that sits between a power supply (e.g. AC mains) and a device (e.g. a computer) to prevent undesired features of the power source from the supply from adversely affecting the performance of the device. UPS is also a solid state equipment provides clean and uninterruptible energy. For continuous power supply for critical loads even in the event of commercial power failure for a considerable period, UPS is the only solution. A proper UPS can provide good quality power to the laod at all conditions of power supply. What is a critical load? Critical loads’ continuous operation is fundamental to the functioning of the business, and also since they require a more stable and reliable power source than that generally offered by the utility mains supply for their correct function. The numbers and types of load falling into the ‘critical’ category are expanding day by day as an ever increasing range of microprocessor-based device enters both the industrial and commercial markets.
Some typical critical loads are: Computers and servers Control systems Industrial process equipment Medical equipment Telecommunications network equipment

• Why is a UPS needed?
Critical loads are equally susceptible to a number of power problems. The one common point to all these problems described below is their unpredictability. Any measures taken to safeguard the critical load supply has to be effective at all times during the use of the load.

• Spikes
Spikes are short duration rapid voltage transitions superimposed on the mains waveform. Spikes can inflict both positive and negative voltage excursions and can damage or destroy electrical/ electronic components.
Spikes can damage hardware and corrupt software. Hardware damage is an inevitable result of exposing sensitive electronic devices to high voltages. Software damage can be more costly in the long run, as periodically read files become corrupted and routine system processing may well compound the errors.

• Surges
Surges are sustained voltage increases above the normal mains value that last for more than one cycle.
Due to their relatively long duration, voltage surges can degrade a computer’s switched mode power supply components and lead to premature failure.

• Sags
Sags are drops in the mains supply that can last for several cycles. They are similar in generation to negative spikes but have a much longer duration.
Sags can cause a computer re-boot if the mains voltage falls so low that the computer believes it has been switched off.

• Blackouts
Blackouts are complete power losses, where the mains supply fails totally. Blackouts have an obvious, sometimes devastating effect.

• Harmonics
Harmonics are generally caused by non-linear loads which pull current from the mains supply in large peaks.

Harmonics cause a disproportionate rise in current, resulting in increased temperatures which can cause component failure, general equipment overheating etc.

RESULT: If the load is intended for 24-hour daily use there is no alternative but to install a form of Uninterruptible Power Supply to provide it with continuous, processed, clean power. To sum up, it is inevitable to use UPS for the reliable operation of your system.

What are the types of UPS ?
1- Off-line UPS
The cheapest solution also the less reliable system. Available upto 3 kVA. It is ideal for little applications with cost effective feature.
2- Line Interactive UPS
A higher level of performance than conventional off-line designs by adding voltage regulation feature.
3- On-line UPS
Provides better overall power protection to the load than the others above. This protection includes power conditioning, regulated voltage and frequency, and zero translation time to battery during a mains failure.

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