/ WHY UPS?

When electric power is produced, it is perfect, but its distribution network is affected by interruptions of various length and also by frequency variations, voltage reductions or increases due to maneuvers on the lines' switches, to lightnings or to the release or input of relevant charges in nearby locations. It has been observed that a relevant percentage of electronic devices' breakdowns (in some instances even the 80% of times) is due to causes linked to the distribution network. The MTBF (Mean Time Between Failures) of a distribution network can vary from 24 to 900 hours, while that of an electronic device varies from 20.000 to 100.000 hours! The economic risks could be very high for a company: costs related to the time needed to recover data and to replace hardware in IT systems in failure the loss caused by lost sells or by worker's inactivity have to be taken into consideration. For all valuable uses comes therefore the need to grant continuity to the input and a wave form adapted to specific requirements (limits for tension, frequency and distortion's maximum and minimum levels).


ELECTRIC POWER IS PERFECT WHEN IT IS PRODUCED, BUT DURING THE TRANSPORT AND USE PHASES ITS QUALITY IS COMPROMISED.

MAIN DRAWBACKS THAT CAN DAMAGE YOUR ELECTRIC AND ELECTRONIC DEVICES:

  • MAINS TENSION INTERRUPTIONS AND MICROINTERRUPTIONS
  • QUICK TENSION ALTERATIONS
  • FREQUENCY VARATIONS
  • BROWN OUTS
  • SURGES
  • WAVE SHAPE DISTORTIONS
  • NOISES
  • TRANSIENT FAULTS
  • SPIKES CAUSED BY LIGHTNINGS
  • HARMONIC DISTORTION
  • HUMAN ERRORS



MAINS DISTURBANCES ARE CLASSIFIED AS FOLLOWS:

CAUSES
EFFECTS

SAG (o BROWNOUT): short span drops in voltage. It's the most common input's disturbance (87% of the total), it is caused by the starting of electric devices such as engines, compressors, elevators and freight elevators.

The effect is the decrease of the power under the level necessary for a computer to function properly, causing stops in the keyboard's operation or unexpected system's crashes, with loss or damage of the data in elaboration.

BLACK-OUT: loss of the electric power to an area, caused by excessive request or by natural disasters.

Among the effects we find the loss of the data loaded in the RAM or in the Cache and sometimes the loss of the FAT (File Allocation Table), with the consequent loss of the data stored in the drive.

SPIKE: fast and short significant increase in voltage, for example caused by lightnings.

The effects are quite serious: the hardware may be significantly damaged and the data is lost.

SURGE: short span voltage increase, with a minimum duration of 1/10 s caused by th turning off of electric engines that require high voltage.

Any tension's value that exceeds the limits for which computers are designed, stresses abnormally certain particularly sensitive components and causes failures.

NOISE: also known as EMI (Electromagnetic Interference) or RFI (Radio Frequency Interference), it distorts the sinusoidal shape of the electric wave expected in the input, and it is caused by industrial illumination, switches, generators, broadcasting stations and machinery; it can be intermittent or continuous.

Noise creates empty spots and errors in programs and in data files.



MAINS DISTURBANCES CAN CAUSE SEROIUS DAMAGE TO YOUR DEVICES...PROTECT THEM!!!

POSSIBLE DAMAGES TO YOUR DEVICES:

MAIN INCONVENIENCES THAT CAN DAMAGE YOUR ELECTRIC AND ELECTRONIC DEVICES:

  • DANNEGGIAMENTO (USURA O ROTTURA) DELL’HARDWARE
  • PARTIAL OR TOTAL DATA LOSS
  • DATA ELABORATION ERRORS
  • UNEXPECTED SYSTEM CRASHES
  • ABNORMAL ELECTRONIC DEVICES' STRESS
  • PERIPHERAL ERRORS
  • WORK STATION ERRORS
  • PROBLEMS IN MANAGING PRODUCTION PROCESSES

 

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