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Glossary
Item
Efficiency (%)
Voltage range
Frequency
Current
Input
Power factor
condition
Harmonic current
Leakage current
Inrush current
Voltage adjustment range
Ripple noise voltage
Output
Input variation influence
character-
istics
Load variation influence
(rated input voltage)
Startup time
Output hold time
Overload protection
Overvoltage protection
Functions
Parallel operation
Serial operation
Ambient operating
temperature
Storage temperature
Ambient operating
humidity
Other
Dielectric strength
Insulation resistance
Vibration resistance
Shock resistance
Conducted emission
Note. As a general rule, the ambient temperature is measured at 50 mm from the Power Supply.
● Input Voltage
The input voltage is the input voltage and corresponding
frequency range at which the rated operations and performance
can be maintained. The AC input voltages shown are effective
values. An input voltage of 100 VAC is input when the input
voltage selector terminals are shorted with a short bar and an
input voltage 200 VAC is input when these terminals are open.
Main applicable models: S82K (90 W, 100 W),
S82J (300 W, 600 W)
Note. Models equipped with 100/200 VAC selection are delivered set to 200-
VAC input. Therefore, be sure to thoroughly check the input voltage
selector terminals before use. Using the incorrect voltage, whether 200
VAC or 100 VAC, will cause the Power Supply to malfunction.
100 V
SHORT
OPEN
100-120V
200-240V
VOLTAGE SELECT
6
7
8
Terminals short-circuited
using the short bar.
2
Power Supply
The output power divided by the effective input power. The higher the effi-
ciency, the smaller the internal power loss of the Power Supply.
The voltage applied to the AC input terminals. The voltage fluctuation range
is indicated in parentheses.
The frequency of the voltage applied to the AC input terminals.
The current value flowing to the AC input terminals. This value is the station-
ary current and will fluctuate depending on the load.
The effective input power divided by apparent power
The harmonic current component excluding the fundamental wave included
in the current waveform.
The current leaking to the ground from the input lines through the casing of
the Power Supply.
The peak current that flows when the input is turned ON.
The range in which the output voltage can be adjusted using the Output
Voltage Adjuster (V.ADJ).
The compound value of the ripple that appears between the output termi-
nals and high-frequency noise. This value is expressed as a peak to peak
(p-p).
The variation in the output voltage when the input voltage gradually varies
within the input voltage fluctuation range.
The variation influence in the output voltage when the output current gradu-
ally varies within the specified load range.
The time from when the input voltage is turned ON until the output voltage
reaches 90% of the rated output voltage.
The time after the input voltage is shut off during which the output voltage
maintains the constant-voltage precision range.
Prevents damage to the Power Supply if the output current exceeds the
rated current (including output short-circuits).
Detects excessive voltage between output terminals and turns OFF outputs. Refer to Overvoltage Protection on page 5.
Increases capacity through parallel connection of multiple Power Supplies.
Increases output voltage through serial connection of multiple Power Sup-
plies.
The allowable range for the ambient temperature in which continued opera-
tion is possible. The ambient temperature is the temperature not affected by
the heat generated by the Power Supply itself. (See note.)
The allowable range for the ambient temperature in which performance will
not deteriorate due to long-term storage. The Power Supply itself is in a
non-operational state.
The allowable ambient humidity range in which the product can be used
continuously.
Test for confirming the insulation strength by applying a specified voltage
between two specified points for a specified length of time.
DC resistance indicating insulation characteristics between two specified
points.
The vibration resistance characteristics.
The shock resistance characteristics.
Noise voltage that is generated in the Power Supply's AC input terminals.
200 V
SHORT
OPEN
100-120V
200-240V
VOLTAGE SELECT
6
7
8
Short bar removed and
terminals open.
Technical Information
Description
● Input Current
Standard Switch-mode Power Supplies rectify AC input current.
Usually, rectification is achieved using capacitor inputs and a
smoothing capacitor through which a reactive current is allowed
to flow. Therefore, the input current depends on the output
power, input voltage, power factor, and efficiency, as follows:
Input current =
Input voltage × Power factor × Efficiency
The power factor of a Switch-mode Power Supply is usually
between 0.4 and 0.6. For details on efficiency, refer to the
information in the datasheet for each model.
Input Rectifier/Smoothing Circuit
Input fuse
Details
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Refer to Input Current on page 2.
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Refer to Harmonic Current Suppression on
page 8.
Refer to Leakage Current on page 3.
Refer to Inrush Current on page 3.
Refer to Voltage Adjustment Range on
page 3.
Refer to Ripple and Noise on page 3.
Refer to Input Variation Influence on page
4.
Refer to Load Variation Influence on page
4.
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Refer to Overcurrent Protection on page 4.
Refer to Parallel Operation on page 6.
Refer to Series Operation on page 7.
Refer to Precautions Common to all Power
Supplies on CD.
Refer to Precautions Common to all Power
Supplies on CD.
Refer to Precautions Common to all Power
Supplies on CD.
Refer to Dielectric Strength on page 4.
Refer to Insulation Resistance Test on page
4.
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Output voltage
Inrush current protection circuit
Input
smoothing
capacitor
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