Kikusui PAD-L III Series, Руководство по эксплуатации

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P-2 Preface PAD-L
Outline of the PAD-L series
The PAD-L series represents a line of universal industrial-grade power supplies that
provide high reliability and excellent electrical characteristics. They are ideal for use
as variable power supplies in research and experiments, or as stationary power
supplies for long-term aging.
The PAD-L series offers the following features:
Improved power factors at low output voltage
The PAD-L series uses a choke input circuit in the rectifier smoothing circuit,
reducing the apparent input power and improving the power factor; therefore, a
smaller power transformer is realized. This is one of the reasons for the compact size
and light weight of the PAD-L series.
Superior temperature coefficient
A low-temperature drift of 50 ppm/˚C (standard value) is achieved through selection
of parts, circuit improvements, and handling of heat radiation by forced air cooling.
(Constant voltage characteristics)
Prompt transient response
Having a high-speed transient response characteristic of 50
µ
s (standard value) (100
µ
s for the TYPE V models), the PAD-L series is capable of handling abrupt changes
in load.
Other features
A 10-turn potentiometer is used to set the output voltage in fine adjustments from 0 V
to the rated voltage.
Use of a CURRENT/VOLT. LIMIT switch allows a constant voltage or constant
current set-value to be checked during operations in addition to presetting current
and voltage.
For safety, the PAD-L series has internal voltage detection, current detection, and
temperature detection circuits, as well as a standard built-in overvoltage protection
(OVP) circuit that permits voltage-setting from the front panel.
The overvoltage protection (OVP) circuit found in the TYPE V models provides a
preset function that allows you to check the OVP set voltage even when the power
supply is in use.
Options
For TYPE III and TYPE IV models, the following options are offered for
incorporation into a rack.
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NOTE
• The TYPE V models cannot be incorporated in a rack.
• Provided with inlets for forced air cooling, the PAD-L series requires a blank
panel if it is to be installed on a rack. See Fig. P-2 or Fig. P-4.
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For details, contact Kikusui distributor/agent.