Kikusui PFX2500 Series, Руководство по эксплуатации, Страница: 131 / 144

PFX2512
131
App .
E
Connecting to a Bias power supply
p. 23
If you want to perform discharge tests with a voltage lower than the minimum discharge operating
voltage, connect a bias power supply.
This is useful when you want to evaluate a low voltage range, when you want to perform a charge/
discharge test on a single cell, or in similar situations.
For the bias power supply, you can use variable-voltage power supplies or fixed-voltage power
supplies.
By connecting a bias power supply of approximately 5 V between the PFX2512 and the electronic
load, the voltage becomes “DUT v bias power supply voltage,” which is a voltage within the
operating area where specifications are guaranteed.
The current capacity of the PFX2512 is 50 A, so when you connect a 5 V bias power supply,
configure the settings so that the power capacity is at least 5 V x 50 A=250 W.
Regarding the power distribution of the PLZ-4W, the part for the bias power supply is consumed, so
if you want to use the PLZ1004W and a 250 W bias power supply, the power range that can be used
for DUT (battery) discharge is 1000 W−250 W = 750 W.
See
CAUTION
• Set the bias power supply so that it is always on (its output is on) when the charge/discharge
system is on. If the discharge is started with the bias power supply off, the bias power supply may
be damaged.
• Pay attention to the bias power supply settings and the permitted capacity (the current rating) to
ensure that the bias power supply does not operate in constant current mode (current limit)
during discharging. If the bias power supply enters constant current mode (current limit) during
discharging, an alarm will occur.
• When a bias power supply is connected, the electronic load's panel displays a voltage of
approximately 4 V even when the system is at rest, but this is not a malfunction.