Kikusui PAD-L III Series, Operation Manual

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PAD-L Applied Operation 4-23
Connecting and setting procedure for parallel operation
1. Determine the master unit.
2. Check that no load is connected between the output terminals of the
master and slave units.
3. Set the OVP (overvoltage protection) trip points for the master and slave
units.
Set the OVP trip points for the slave units to a value slightly higher than that
used for the master unit. However, do not set them to a value exceeding the
maximum voltage value (Chapter 6, Table 6-1.)
4. While pressing the CURRENT/VOLT. LIMIT switch of the master unit,
set the output voltage and current.
5. Turn off all POWER switches of the master and slave units.
6. Turn the VOLTAGE control and the CURRENT control of each slave unit
fully clockwise.
Set the output of each slave unit to the maximum level, so that it can follow the
output setting of the master unit.
7. Connect the master and slave units and a load, as shown in Fig. 4-16.
WARNING
• Isolate the cable connecting one control terminal to the other with
at least the isolation voltage of the unit. For details, see 2.6
"Grounding the output terminal."
CAUTION
• Pay close attention to the current capacity and withstand voltage
of cables to be used for the load cables. For more information,
see 3.3.1 "Load cables".
• Use wires of the same length and size for connecting the load and
each unit. Use of varying lengths and size may cause different
output current from each unit.
• To assure good connection, use crimped terminals.
• Position each unit with sufficient space around it.
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NOTE
• When performing remote sensing in master-slave-control parallel operation,
prepare the sensing wiring only for the master unit. For information on
connection, see 4.1 "Remote sensing".
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