Kikusui PMX32-3DU, Руководство пользователя

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14
User’s Manual
PMX_MULTI
Installation
Load Considerations
Note that the output will become unstable if the following types of loads are connected.
Loads with peak current or pulse-shaped current
The product only indicates mean values. Even when the indicated value is less than or equal to the set
constant current, the peak values may exceed the set constant current. If this happens, the product is
instantaneously put into constant-current mode, and the output voltage drops.
For these types of loads, you must increase the set constant current or increase the current capacity.
Loads that generate reverse current to the power supply
The product cannot absorb reverse current from the load. Therefore, if a regenerative load (such as an
inverter, converter, or transformer) is connected, the output voltage increases and becomes unstable. This
can cause a malfunction.
For these types of loads, connect a resistor (R
D
) as shown in the following figure to bypass the reverse
current. However, the amount of current to the load decreases by Irp.
Load current with peaks Pulse-shaped load current
Constant current setting
Ammeter reading (mean value)
Constant current setting
Ammeter reading (mean value)
I
O
R
D
E
O
Equivalent circuit of the product
Regenerative load
Load
­ +
0
Reverse current
Output current waveform
-
I
O
+
I
O
I
rp
R
D
>ȍ@ ”
E
O
>9@
I
rp
[A]
R
D
: Reverse current bypass dummy load
E
O
: Output voltage
I
rp
: Maximum reverse current
CAUTION
Use a resistor with sufficient rated power for R
D
. If a resistor with insufficient rated power for
the circuit is used, resistor R
D
will burn out.