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UPS Preventive Maintenance Scheme

UPS Preventive Maintenance Scheme

Uninterruptible Power Supply Systems support a wide range of applications and their operation is often critical for companies. Based on our expertise and knowhow in energy power systems, we provide added value services in order to ensure their correct operation. In this context, we have prepared a checklist which includes all key actions in a preventive maintenance scheme for UPS. More specifically, this chechlist includes: Visual inspection of the Uninterruptible Power Supply System and its batteries Visual inspection of the UPS Check of batteries for cracking, distortion, bad connectors or leakages Visual inspection of grounding Inspection of cooling fans’ operation Electrical measurements Check and measure of voltage (input/output) L1 (L2, L3) N. Check and measure of current (input/output) L1 (L2, L3) N. Check of output frequency Inspection of loads normal distribution per phase Inspection and monitoring of system’s alarms and LEDs Calibration and inspection of thresholds points Functional assessments (By-pass mode) and inspection of switches’ correct functioning Functional testing of UPS to By-pass and maintenance by pass switch Check all switches correct functioning Alarm history recording Software update (if a new version is released) Assessment of the UPS correct temperature & ventilation Inspection and tightening of batteries’ interconnections, of DC circuit and of AC input – output cables Check and tightening of AC cables input – output Check and tightening of batteries interconnections & DC circuit using appropriate tool Inspection of electronic circuits and control cards Gradual closure of the UPS system (optical inspection, cleaning, testing) The optical inspection includes the inspection of displays and other alarms The cleaning will be done after opening the covers, using air suction device (vacuum cleaner) Batteries’ maintenance (cleaning... read more
Lead-Based Batteries

Lead-Based Batteries

The History of the Battery Although there is evidence of electrochemical cells dating back to 2000 years ago, the story of the first true battery starts with an Italian physicist by the name of Alessandro Volta. In 1800 Volta created the first battery based on pairs of copper and zinc discs, the Voltaic Pile. It was with the invention in 1836 of the Daniell Cell, which consisted of a copper pot filled with a copper sulphate solution, that batteries would be made that could deliver a reliable current and be put to industrial use. The first rechargeable battery, or secondary cell, was a lead-acid cell battery invented in 1859 by the French inventor Gaston Planté, whose work laid the foundation for the modern lead-based battery industry. The first practical lead-acid battery was developed by Henri Tudor in 1886 and was manufactured first in Luxembourg and then in Belgium, France, Germany and the United Kingdom. Since then there has been steady improvement of this battery technology in parallel with other technologies such as the first dry cell (a battery with a non-liquid electrolyte), the zinc-carbon battery, in 1887, the nickel-cadmium battery in 1899, the nickel-iron battery in 1903, the nickel hydrogen battery in the early 1970s, nickel-metalhydride batteries in the late 1970s, and lithium and lithium-ion batteries since the late 1980s. Batteries Today Batteries come in all sizes, from personal batteries used to power MP3 players, toys, radios and smoke detectors, and rechargeable batteries in mobile phones, laptops and portable DVD players, to industrial and automotive batteries used to crank internal combustion engines in cars (starting, lighting and ignition, or... read more