16
AT851 Battery Aging Tester
Figure 3-10
Rate power and
Power Limit
Input
V)
Input CI)
Ratea Plteo
Ratea
Vlltage
Ratea Crooent
Input
V)
Input CI)
Ratea
Vlltage
Ratea Crooent
Crooent Iimit
Plteo Iimit
3.9
Protection Features
AT851 includes five protection features.
3.9.1
Over Voltage [
-OV-
]
Load input will be turned OFF immediately if input voltage exceeds the 105%*V-MAX.
The buzzer beeps, “
-OV-
” is displayed on display #3 and
indicator flashes.
3.9.2
Over Current [
-OC-
]
When work in the CR or CC and CP mode, input current is ascending continuously and
the load current will be limited to I-MAX value. Load will work in the OC protection
state and
-OC-
will be displayed on display #3.
In the CV mode, transition mode and list mode, the buzzer beeps and
-OC-
will been
displayed once input current exceeds the 102%*I-MAX.
3.9.3
Over Power [
-OP-
]
CV mode:
If the input power exceeds the power limit (101%*P-MAX), load will work
in the over
power protection state
. The buzzer beeps, current value will be flashed and
-OP-
will be
displayed.
If the input power exceeds the power limit (102%*P-MAX), load will be turned off.
CC, CP and CR mode:
If the input power exceeds the power limit (102%*P-MAX), load will work
in the over
power protection state
. Voltage and current value will be flashed and
-OP-
will be
displayed. But the buzzer is silent.
3.9.4
Reverse Voltage [
-RV-
]
This feature protects the load module in case of the input DC voltage lines are
connected with wrong polarity.
Once a reverse voltage condition detected, Buzzer beeps and
-RV-
will be displayed,
and input will turn off immediately.
