Alber Cellcorder CRT-300, Руководство пользователя

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Application Note CC-001
74
32 Application Note CC-001
Internal Resistance and the Cellcorder
(This document is available at www.alber.com)
INTRODUCTION
With the changeover from “vented” cells to “sealed,” VRLA cells, and
the proliferation of UPS systems, an even greater impetus has been
placed in finding economical and reliable ways to establish the state of a
battery’s capacity and its conduction path. In this Application Note, the
primary focus will be on a new, relatively low cost aid in determining a
battery’s health by virtue of its cells’ internal resistances together with
float voltages and intercell connection resistances. All three of these
variables are rapidly measured and conveniently recorded by the
Albércorp Cellcorder, the storage battery multimeter.
THE SEARCH
The search for new approach to capacity and conduction path testing has
been ongoing. Traditionally, a battery’s capacity to store energy has been
specified by its manufacturers as its ability to supply a
constant amount
of current, or power, to the load for a defined time period to a final
voltage. The real test of the battery’s
actual capacity as opposed to its
rated capacity frequently involves hours of manpower and load and data
acquisition equipment.