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Using Temperature Compensation to Improve the Accuracy of Ohmic Value Measurements

David Battle

For most manufacturers Lead Acid batteries perform optimally at or around 77-degree Fahrenheit. Therefore, many applications operate the battery at that temperature. What about the applications where it isn’t cost-effective to control the temperature? We all know the battery will not perform as well and will have a shorter operating life but how do we monitor and manage those batteries? Ideally, we’d like to keep the batteries which are treated poorly close to ensure we could measure them frequently and correct any issues promptly. But unfortunately, many of the batteries exposed to the most severe operating conditions are those located in remote sites where access is extremely limited. This paper will characterize users and cases where batteries are operated in an extreme temperature environment. Many utilities have small switch stations with no environmentally controlled station house. They are often deployed in a metal box exposed to the environment amplifying the extremes of the environment and sometimes temperatures reach well above the highest ambient air temperature measured outside the enclosure. Here the batteries are operating at temperatures from below 0 to greater than 120 degrees Fahrenheit. With the proliferation of NERC maintenance regulations, the health of batteries is aggrandized.

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