4. Constant current setting: Firstly, regulate the voltage to any value between
3-10V, and regulate the knob (3) to the minimum. (0A), and then use a lead to
make positive and negative polarities shorted. Regulate the Current regulation
setting knob (3) to the necessary current value. Remove the short lead, and
then regulate the voltage to the necessary value, connect the load, then you
can start your work. At this moment the power supply is under the constant
current. That is the current remains the same, while the voltage changes with
the load. (There will be slight sounds when positive and negative polarities are
shorted. That is normal phenomenon)
5. Over voltage protection setting: Firstly regulate the over voltage protection
setting knob (2) to the maximum, and then start the power supply, regulate the
voltage to the necessary value, counterclockwise regulate over voltage
protection setting knob until the Over voltage protection indicator light (5) is
on and have no voltage output. Turn off the power supply, regulate the voltage
to 0V, and restart the power supply, regulate the voltage to the necessary value.
Now you can start you task.（The over voltage protection value should be
higher than the necessary voltage value. If not, the power supply can not be
started. Restart the power supply until the over voltage protection indicator
light (5) is off.）
IV Matters need attention
1. Input voltage: Confirm the input voltage is AC220V±10% 50Hz.if the input
voltage is wrong, the power supply can not work normally, and even it will
lead to serious result.
