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3551 Datasheet(PDF) 3 Page - ASM GmbH |
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3551 Datasheet(HTML) 3 Page - ASM GmbH |
3 / 8 page 3550, 3551 BATTERY HiTESTER With the advancing information age, UPS applications will become important over a wide range of locations, from office buildings to hospitals and research institutions. Accordingly, battery maintenance is a field that can be expected to grow in importance. Also, in the development of practical electrically powered vehicles, the environment for lead-acid storage batteries is changing rapidly, and these changes indicate a great opportunity for Models 3550 and 3551 BATTERY HiTESTERS. 2 The increasing importance of battery testing The traditional technique for checking the state of a backup battery is based on a measurement of the specific gravity of the electrolyte. But as sealed batteries have become the norm, this is no longer possible. The 3550 and 3551 take measurements from the battery terminals, and can therefore function with completely sealed batteries. What about conventional maintenance methods? The operational life of a battery depends on the frequency of use (number of charge/discharge cycles). The graph on the right illustrates the relationship between the time required for charging the battery and the charge capacity and internal resistance, and shows that as the charging time increases, the charge capacity decreases, while the internal resistance rises. There are various methods for determining whether a battery has reached the end of its operational life, but the method based on measuring the internal resistance and voltage is fast and reliable. Internal resistance Discharge capacity Charging time Relationship between charging time and charge capacity or internal resistance 3551 BATTERY HiTESTER |
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