Internet
http://www.kikusui.co.jp/
Electronic Load
Accommodating to
500V
PLZ-3WH series
System Electronic Loads
PLZ-3W/3WH Series
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Four types of power rating: 150 W, 300 W, 600 W, and 1000 W, a total of eight models
Ready for constant current, constant resistance, constant voltage, and constant power modes
Capable of doing actual-load simulations under sequence control
Maximum input voltage of 500 V (PLZ-3WH Series)
Equipped with sequence functions, the instruments are
DISCON
DISCON
DISCON
DISCON
capable of doing actual-load simulations ......
The PLZ-3W/3WH Series are composed
of system electronic loads used either in
characteristic or lifetime tests of a variety
of DC voltage sources such as switching
power supplies and primary and secondary batteries, or as burn in loads.
Instruments in the PLZ Series have four
operation modes: “constant current”,
“constant resistance”, “constant voltage”,
current
voltage
and “constant power”. They are also
available in four different power ratings,
150 W, 300 W, 600 W, and 1000 W, with
a total of eight models available overall.
Incorporating a high-performance current
control circuit, all instruments provide
highly stable, high-speed operation and
offer improved operability and multifunctionality through the use of CPU
control. These features allow them to
simulate actual load tests of power supply
units having large transitional changes in
their output currents, such as printers and
motors. In the constant power mode,
these instruments deliver performance in
carrying out load tests on alkaline and
other types of batteries. Furthermore, the
PLZ-3WH Series accept DC input
voltages of up to 500 V, making it ready
for use at high voltages. And when an
optional GPIB or RS-232C interface is
employed, these instruments can be
operated by fully programmable control.
In particular, take advantage of a
Kikusui-designed multi-channel bus
(MCB) to simultaneously control a
maximum of 16 instruments per GPIB
address or RS-232C port. (Note: In
addition to the PLZ series, this MCB will
also handle PAX Series programmable
power supplies and PBX Series bipolar
power supplies.)
Model Rated Power Operating Voltage Rated Current
PLZ153W 150W 1.5 to 120V 30A
PLZ303W 300W 1.5 to 120V 60A
PLZ603W 600W 1.5 to 120V 120A
PLZ1003W 1000W 1.5 to 120V 200A
PLZ153WH 150W 5 to 500V 7.5A
PLZ303WH 300W 5 to 500V 15A
PLZ603WH 600W 5 to 500V 30A
PLZ1003WH 1000W 5 to 500V 50A
[ TYPE I ]
PLZ153W
PLZ153WH
PLZ303W
PLZ303WH
[ TYPE II ]
PLZ603W
PLZ603WH
PLZ1003W
PLZ1003WH
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Front Panel and Rear Panel (PLZ303WH)
System Electronic Loads
PLZ-3W/3WH
Series
1 Load terminals on the front panel
Used to connect to the device being tested.
They are connected in parallel to the load terminals on the rear panel. (Note that PLZ603W/
603WH and PLZ1003W/1003WH have no load
terminals on the front panel.)
2 LOAD key
Turns on/off current that flows through the instrument.
3 Screen (LCD with back light)
Displays the set values of current, resistance,
voltage, and power; menu items; and a variety
of parameters and messages.
4 Constant current (C.C) / constant resis-
tance (C.R) lamps
Indicate whether the instrument is in C.C or C.R
mode.
5 Function keys
Used to select each mode, or to set memories
or rise/fall time.
6 JOG/SHUTTLE knobs
The JOG knob is used for fine adjustments to
set values or to select values, and the SHUTTLE knob is used for coarse adjustments to set
values.
2 3 4
5
6
7
8
1
9
7 Arrow keys
Used to select a menu, setting item, or a step
number for program editing in the sequence
mode.
8 Sequence keys
Menu keys for sequence mode
9 Contrast control
10 Optional board slot
An optional interface board (one of GPIB, RS232C, and MCB) is inserted here.
11 Remote sensing terminals
Used for remote sensing that compensates for
the voltage drop caused by resistance in load
cabling.
12 External control connector
13 Load terminals
14 AC input supply voltage range selector
switch (on the bottom face)
10 11 12 13
14
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Superior Features and Ease of Operation
through CPU Control
Designed to Meet Today’s More
Complex Loading Conditions
Constant power mode useful for
battery discharge tests
Loads of constant power such as DC/DC
converters are being used increasingly for
batteries, and evaluation tests on such
loads also require the use of constant
power. Since the PLZ-3W/3WH Series
have a C.P mode, you can conduct these
types of load tests (such as constantpower discharge tests) under highly
realistic conditions.
Setting of various conditions
Variable rise/fall time function
When the set current needs to change
abruptly, a rise/fall time (Tr/Tf) to reach
the set value can be selected using one of
eight values between 50 µs and 10 ms.
This allows the instruments to set up
various conditions for tests in order to
support tests such as transitional response
tests of power supplies. The instruments
can also produce accurate simulation
waveforms using the sequence function.
If the device being tested has an L
component, setting Tr/Tf to a slower
interval will prevent overvoltages caused
by the L component. (Note: available Tr/
Tf time settings = 50 µs, 100 µs, 200 µs,
500 µs, 1 ms, 2 ms, 5 ms, and 10 ms)
Rise/fall time(in C.C mode)
H: 0.2 ms/div,V: 12A/div
Rising and falling waveforms
of 50 µs and 200µs
Sequence function that allows
complicated current simulations
Because instruments in the PLZ-3W/
3WH Series have a sequence function
that sequentially processes the data stored
in each step memory, a variety of current
simulations may be performed. Sequence
data can be input either from the front
panel or through an external controller
using an optional interface. The sequence
function offers two modes: a fast-speed
mode that enables programming of 100
µs high-speed steps, and a normal-speed
mode that allows programming of ramp
waveforms in a single step.
● Sequence function
Settable items I SET value (constant current),
Step execution Time can be set for each step.
time However,the range is fixed for
Pause Provided
Maximum number
of steps
Number of repetitions 1 to 9998 and ∞
Number of programs 16
Number of sequences 8
Settable items I SET value (constant current),
Step execution Step time can be set on a program basis.
time (1)0.1 ms to 100 ms
Pause Not provided
Maximum number
of steps
Number of repetitions 1 to 9998 and ∞
Number of programs 16
Number of sequences 8
NORMAL SPEED
R SET value (constant resistance),
P SET value(constant power),
V SET value(constant voltage)
Trigger output
Load on/off
Setting of short-circuit function
Specification of step transition or
ramp transition
each sequence.
(1)1 to 9999 ms
(2)1 to 999.9 s
(3)1 s to 999 min and 59 s
(4)1 min to 999 hr and 59 min
256
FAST SPEED
R SET value (constant resistance),
Trigger output
1024
To Support Today’s More
Diverse Experiments and Tests
Setup function and backup memory
Different set values can be stored as part
of a setup routine in the built-in backup
memory. The built-in backup memory
can store a maximum of four set-ups.
Remote sensing that compensates
precisely for set values
Remote sensing will compensate for
voltage drops in load lines, allowing
resistance, voltage, and power values to
be set precisely. This especially improves the transitional characteristics in
the C.R and C.P modes.
Trigger signal output useful for
waveform monitoring
The instruments will output trigger
signals when trigger output is specified
either in sequence operation or during
switching operation. These signals can
then be used as synchronous signals for
external instruments such as oscilloscopes, providing an easy means of
waveform observation.
Sequence mode (in C.C mode
and fast-speed mode)
H: 5 ms/div,V: 10 A/div
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