Kikusui PLZ-4WH Series User Manual page 147

If the protection action is set to LIMIT, the PLZ-4WH sinks current as a constant-power load at
point N. Even if you attempt to increase the current, it will not increase beyond point N. If you
decrease the current, overpower protection (OPP) is cleared. The PLZ-4WH returns to
constant current (CC) mode, and the operating point moves along segment MN.
If the overpower protection (OPP) setting is P
activated as the current is increased, the operating point reaches point S.
At point S, the PLZ-4WH switches to constant voltage (CV) mode. The voltage is fixed at the
user-specified voltage V
determined by the voltage and internal resistance of the battery.
PLZ-4WH
The load is turned off (no current flows).
LOAD OFF
The PLZ-4WH stops operating as a load.
Point N
The PLZ-4WH switches out of constant current (CC) mode.
LIMIT Overpower protection (OPP) continues, and the PLZ-4WH
operates as a constant-power load.
. The operating point moves along segment QS. The current is
Q
, because overpower protection (OPP) is not
N1
Operating Area
App.
147