M
AVTM246004 BITE 2/2P Rev 4 July 2011
52
125 V dc
40 V dc
section
(example)
J2
From transmitter
(current source leads)
Figure 5-3: Sectioning a parallel string of cells
Sectioning High-
Voltage UPS Batteries
Some UPS systems with voltages up to 600 V dc are designed
with parallel strings of cells. To test one of these systems,
positions the
current source leads
accordingly to satisfy
both the test current and the voltage limit of the BITE 2/2P.
Refer to the procedure explained in the preceding subsection,
"Sectioning a Battery System Greater than 275 Volts" In
addition consider the string impedance with reference to the
remaining parallel string influences. Ensure that the majority
of the current flows through the cells under test and not
through parallel influences. (See Figure 5-2)
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