Benefits of Battery Testing - Ohmic Trending (Protec December 2022 Webinar) скачать в хорошем качестве

Benefits of Battery Testing - Ohmic Trending (Protec December 2022 Webinar)

With the introduction of Valve Regulated Lead Acid, VRLA batteries to station dc supplies in the 1980’s several of the standard maintenance tools that are used on Vented Lead Acid, VLA batteries were unable to be used on this new type of lead‐acid battery to determine its state of health. The only tools that were available to give indication of the health of these new VRLA batteries were voltage readings of the total battery voltage, the voltage of the individual cells and periodic discharge tests. In the search for a tool for determining the health of a VRLA battery several manufacturers studied the electrical model of a lead acid battery’s current path through its cell. The overall battery current path consists of resistance and inductive and capacitive reactance. The inductive reactance in the current path through the battery is so minuscule when compared to the huge capacitive reactance of the cells that it is often ignored in most circuit models of the battery cell. Taking the basic model of a battery cell manufacturers of battery test equipment have developed and are marketing testing devices to take measurements of the current path to detect degradation in the internal path through the cell. Ohmic testing can be accomplished using one of three techniques: DC Resistance AC Conductance (admittance) AC Impedance In this webinar we will explore each of the techniques along with practical application and analysis of ohmic data. Battery Ohmic Trending Equipment at Protec: Alber Cellcorder CRT-400 Cell Resistance Tester https://protecequip.com/products/albe... Megger Bite2P Battery Impedance Test Set https://protecequip.com/products/megg... Megger Bite3 Battery Impedance Test Set https://protecequip.com/products/megg... Protec is an administratively-approved course provider for the InterNational Electrical Testing Association (NETA). Visit us at https://protecequip.com