■ Outline
This device allows us to get the desired voltage or frequency by freely setting
the voltage and frequency of common alternating current. Since the voltage and
frequency of common alternating currents are different, there was much difficulty
in assuring quality when inspecting products for export. Now, there is no problem
for export item inspection and product development.
This equipment, which allows the frequency to be varied between 45 and 500Hz,
has adopted the converter part (rectifier, voltage control) and inverter. Also,
it has a low signal-versus-noise ratio and high output stability.
■ Characteristics
- For the development, production and inspection of electrical devices in
exporting or importing.
- For the frequency conversion and reliability-test of each company and laboratory.
- The inverter efficiency is excellent due to the digital control method.
- PWM (pulse Width Modulation) type.
- High stability: The output stability is high for the variations in input-voltage
and load.
- The input and output are of a complete isolation type.
- Since it uses a semiconductor for the variable frequency and voltage, the
response speed is much faster than the conventional Slidac method and has
no damping (Slidac method: about 1 second, semiconductor method: 0.1 second
or below).
■ Outside View
 
■ Specification (DFSS60
Series)
|
Capacity (KVA)
|
2
|
3
|
5
|
7.5
|
10
|
15
|
20
|
30
|
50
|
80
|
100
|
150
|
|
Input
|
Input voltage
|
1Ø 220V ± 15% , or as requested
|
|
Frequency
|
50Hz, 60Hz ± 5%
|
|
Output
|
Output voltage
|
220V ± 1% Option : ① 70 ~ 500V
|
|
Frequency
|
50Hz , 60Hz ± 0.5% Option : ② 45 ~ 65Hz
③ 47 ~ 500Hz
|
|
Power factor
|
0.8 above ground
|
|
Waveform signal-versus-noise ratio
|
within 3%
|
|
Inrush characteristics
|
± 5% (0⇔１００% with sudden load change)
|
|
Inrush load
|
120% for 10 minutes
|
|
Overall efficiency
|
85% or above
|
88% or above
|
|
Noise
|
60dB or below
|
65dB or below
|
|
Temperature
|
-10°C~40°C
|
|
Humidity
|
10~90%(NON CONDENSING)
|
|
Order options
|
Remote control, possible external control
of voltage and frequency thru RS-232C
|
|
Size (WxDxH)mm
|
320x610x710
|
410x740x750
|
440x800x1025
|
540x940x1105
|
1300x920x1300
|
1600x1220x1600
|
1600x1220x1800
|
|
Weight (kg)
|
80
|
90
|
180
|
205
|
230
|
320
|
360
|
410
|
700
|
820
|
1100
|
1500
|
■ Specification (DFTT80
Series)
|
Capacity (KVA)
|
10
|
15
|
20
|
30
|
50
|
80
|
100
|
120
|
150
|
200
|
250
|
300
|
|
Input
|
Input voltage
|
3Ø 380V ± 15% , or as requested
|
|
Frequency
|
50Hz, 60Hz ± 5%
|
|
Output
|
Output voltage
|
380 ± 2% Option : ① 70 ~ 500V
|
|
Frequency
|
50Hz , 60Hz ± 0.5% Option : ② 45 ~ 65Hz
③ 47 ~ 500Hz
|
|
Power factor
|
0.8 above ground
|
|
Waveform signal-versus-noise ratio
|
within 3%
|
|
Inrush characteristics
|
± 5% (0⇔１００% with sudden load change)
|
|
Inrush load
|
120% for 10 minutes
|
|
Overall efficiency
|
85% or above
|
90% or above
|
95% or above
|
|
Noise
|
60dB or below
|
65dB or below
|
70dB or below
|
|
Temperature
|
-10°C~40°C
|
|
Humidity
|
10~90%(NON CONDENSING)
|
|
Order options
|
Remote control, possible external control
of voltage and frequency thru RS-232C
|
|
Size (WxDxH)mm
|
1000x670x1020
|
1300x920x1400
|
1600x1220x1800
|
2000x1220x1800
|
2200x1220x2000
|
|
Weight (kg)
|
320
|
360
|
400
|
460
|
560
|
800
|
900
|
1100
|
1300
|
1700
|
2200
|
2500
|
|
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