Kikusui PAS 10-35 - When the Load Generates a Reverse Current to the Power Supply2-2

2-2 Before Using the Unit PAS SERIES
Fig.2-1 Load current with peaks
Fig.2-2 Pulse-shaped load cur-
rent
2.2.2 When the Load Generates a Reverse Current to
the Power Supply
The unit cannot absorb a reverse current from a regenerative load
such as an inverter, converter, or transformer that supplies current to a
power supply. Consequently, the output voltage will increase and the
output will fluctuate.
For these types of loads, connect a resistor R
D as shown in Fig.2-3 to
bypass the reverse current. However, the current capacity to the load
decreases by Irp.
• For resistor RD, select an appropriate resistor rated
for the power (allowing sufficient margin).
If a resistor with insufficient rated power for the circuit
is used, it may burn out.
Fig.2-3 Remedy for regenerative load
Preset constant current value
Meter indication value (mean value)
Preset constant current value
Meter indication value (mean value)
CAUTION
IO
RD
EO
Equivalent circuit of the unit
Regenerative load
Load

＋
0
Reverse current
Output current
waveform
-I
O
+IO
Irp
RD[ȍ] 
E
O
[V]
I
rp
[A]
RD: Reverse current bypass dummy load
E
O: Output voltage
I
rp: Max. reverse current