 Single-phase Variable-frequency power supply |
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DD-5KVA |
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The ideal AC power source features stabilized frequency, stabilized voltage, zero internal resistance and pure sine wave voltage waveform (no distortion). Variable frequency power source is very close to ideal AC power source. Therefore, the developed countries tend to use the variable frequency power source as the standard power source, so as to provide the electric devices the most excellent power-supplying environment, which is convenient to objectively test technical performance of the electric devices. The variable frequency power source mainly consists of two types: Linear Amplifying and SPWM Switching. Notes |
Model/Output Capacity |
DD-0.5VA |
DD-1kVA |
DD-2kVA |
DD-3kVA |
DD-4kVA |
DD-5kVA |
DD-6KVA |
DD-10KVA |
DD-15KVA |
SD-20KVA |
SD-30KVA |
SD-45KVA |
SD-60KVA |
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Output Current |
LOW |
4.2A |
8.4A |
16.8A |
25A |
33.4 |
42A |
50A |
84A |
125A |
168A |
250A |
375A |
500A |
HIGH |
2.1A |
4.2A |
8 .4A |
12.5A |
16.7 |
21A |
25A |
42A |
63A |
84A |
125A |
188A |
250A |
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Output Voltage |
Single-phase LOW： 0-250V HIGH： 0-500V |
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Output Frequency |
45.0-70.0 Hz Adjustable，50Hz ， 60Hz ， 2F ， 4F ， 400Hz (Optional) |
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Circuit Type |
(IGBT)MPWM (Pulse Width Modulation) |
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Input Voltage |
DD:Single-phase AC220V ± 15% 50/60Hz SD:Three-phase four-wire AC380V ± 15% 50/60Hz |
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Frequency Stability |
≤ 0.05% |
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Load Regulation |
≤ 0.5%-1.5% (Resistor Load) |
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Waveform Distortion Rate |
≤ 0.5%-1.5% (Resistor Load) |
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Efficiency |
85% | |||||||||||||
Output Instruments |
Frequency Indicator, 4-digits RMS digital frequency indicator, resolution 0.1Hz Voltage Meter, 4-digits RMS digital voltage meter, resolution 0.1V Ampere Meter, 4-digist RMS digital ampere meter, resolution 1mA Power Indicator, 4-digits RMS digital power indicator, resolution 1W Power Factor Meter Resolution 0.001
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Protective Devices |
Over load, short circuit, over voltage, over current, over temperature protective and alarm devices. | |||||||||||||
Operating Environment |
Temperature 0～40℃ Relative Humidity 0～90% |
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1. Resistance: Power Capacity = 1.1× Load Power
Load Starting Current
2. Induction: Power Capacity = ──────────────────── × Load Power
Load Rated Current
?????????????????????? ???? Wave Crest Coefficient for Load Current
3. Rectification: Power Capacity = ──────────────────────────────── × Load Power
1.5
4. Mixed: Please properly select according to the percentage of different loads.
Note: For such inductive loads as refrigerator and air conditioning, the power capacity should be selected according to the starting power.
