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5. OPERATION INSTRUCTIONS
5-1. Precaution
1) AC input
AC input must be within the range of line voltage ±10%, 50/60Hz.
WARNING.
To avoid electrical shock, the power cord protective grounding conductor must be
connected to ground.
2) Installation
Avoid using the supply in a place where the ambient temperature exceeds 40
℃
.
Allow enough space around the power supply for ventilation.
WARNING.
To avoid damaging the power supply, do not use it in a place where ambient
temperature exceeds 40
℃
.
WARNING.
Voltages more than 60V DC are a lethal shock hazard to the user. Be careful when
connecting power supplies to achieve voltages higher than 60V DC total or 60V DC between
any connection and earth ground.
Operation mode: single or tracking (serial or parallel) operation (two units).
CAUTION.
1 The instrument must be operated under rated main supply. If it is meant to work for a long
time, it is suggested to use 60-70% instead of full load so as to avoid rapid aging.
2. Avoid frequent short-circuit operations.
3. In case of the instrument with full load, do not turn on the instrument. Before adding load,
adjust the voltage knob to the minimum value, then turn on the instrument. Next turn the
voltage/current adjustment knob to set targeted values.
3) Output voltage overshoot
Voltage between output terminals may exceed the present value when the power is turned on or off.
5-2. Setting Current Limit
1) Determine the maximum safe current for the device to be powered.
2) Temporarily short the positive “+” negative “-” terminals of the power supply together with a test lead. But
for TP-2303TK/2305TK/30102/60052, just pushing the output ON/OFF key can make the short circuit
function.
3) Rotate the COARSE VOLTAGE control away from zero sufficiently for the CC indicator to light.
4) Adjust the CURRENT control for the targeted current limit. Read the current value on the ammeter.
5) The current limit (over load protection) has now been preset. Do not change the CURRENT control setting
after this step.
6) Remove the short between the “+” and “-” terminals and hook up for constant voltage operation.
5-3. Constant Voltage/Constant Current Characteristic
The working characteristic of this series Power Supplies is called a constant voltage/constant current automatic
crossover type. This permits continuous transition from constant current to constant voltage modes in response
