DF-S Series AC LABORATORY POWER SUPPLIES
Maximum ratings for the series (depending on model): 300 Vrms L-N / 42 A / 5 kVA / ØPL = 1.66 €/VA
| Output phases: | 1 |
| Voltage range: | 0 ... 300Vrms L-N |
| Current range: | 0 ... 42A L-N |
| Frequency range: | 45Hz ... 250Hz |
| Power range: | 0 ... 5kVA |
| Cabinet: | Table-top unit |
| Regulation: | U |
| Load regulation U: | ≤1% |
| Mains regulation U: | ≤1% |
| Frequency stability: | ≤0.01% |
| Voltage stability: | ±1% |
| Harmonic distortion: | ≤2% |
| Crown factor deviation: | ≤2% |
| Recovery time (10% → 90% load): | ≤15ms |
| Display accuracy U: | ±0.5% FS + 5 dig |
| Display accuracy I: | ±0.5% FS + 5 dig |
| Display accuracy P: | ±0.5% FS + 5 dig |
| Display accuracy F: | ±0.01% FS + 5 dig |
| Setting accuracy U: | ±1% FS |
| Setting accuracy F: | ±0.1% FS |
| Ext. control analogue: | No |
| Ext. feedback analogue: | No |
| RS232: | Yes (51XXX models only) |
| RS485: | No |
| RS422: | No |
| Open protocol: | Yes (51XXX models only) |
| Modbus RTU: | No |
| SCPI: | No |
| Interlock: | Yes* |
| External Output On/Off: | Yes* |
* Optional
The DF-S Series AC laboratory power supplies provide digitally regulated sinusoidal AC voltage in a compact benchtop design. The adjustable frequency range of 45 Hz … 250 Hz supports functional tests, stress tests, and measurement tasks on mains-powered devices and assemblies. The regulation operates in constant-voltage (CV) mode.
Voltage and frequency can be adjusted directly on the front panel. This allows you to keep an eye on output values and device status. With a DF-S51 model, you can integrate the power supply into your own test programs via RS-232. The DF-S50 models are available for applications without external digital control.
The output is potential-free by default and can be grounded upon request. A documented proprietary protocol is available for the RS232 connection of the DF-S51 models.
Performance and Overload Capacity
The permissible combination of voltage, current, and reactive power is specified in the data for the selected model. The higher output current is available in the lower voltage range. The overload capacity of 300% of the rated power is available for 2 seconds and is not a continuous power rating. For continuous operation, the rated values and the specified ambient and cooling conditions must be observed.
The standard models currently listed range up to 3 kVA. The largest listed model provides 25 A in the lower voltage range and 12.5 A in the higher voltage range. The maximum values for the series listed above also include custom configurations. These values are not achievable with every standard model at the same time.
Signal Quality and Dynamic Range
Short response times support dynamic test sequences: The recovery time is ≤15 ms for a load change from 10% to 90%. With digital control, the command response time is less than 20 ms.
Additional options
[A] External Output Enable (optional)
The optional external output enable [A4] integrates the power supply into your test setup via a 24V control signal. The connection specifications for the ordered version apply to the wiring and the enable status.
Output Configuration The AC output is potential-free by default and is available in a grounded version upon request. The protection and grounding configuration of the test setup must match the ordered version. Refer to the device-specific connection documentation for details.
The model overview below is updated from our Laborance online store, where you can find the standard models and how to order them. For custom specifications or configurations, please contact us with the requirements for your application.
| Model | Price | Output type | Output voltage | Output current 0 ... 150Vrms L-N | Output current 0 ... 300Vrms L-N | Power | Output frequency | Display resolution F | Display resolution U | Display resolution I | Display resolution P | Voltage stability | Frequency stability | Harmonic distortion | Crown Factor Deviation | Load regulation U | Load regulation I | Line regulation U | Line regulation I | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DF-S50012 | 1.440,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 10A | 0 ... 5A | 0 ... 1.2kVA | 45Hz ... 250Hz | 0.01Hz | 10mV | 1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S5102 | 1.770,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 16.8A | 0 ... 8.4A | 0 ... 2kVA | 45Hz ... 250Hz | 0.01Hz | 10mV | 1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S5103 | 2.070,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 25A | 0 ... 12.5A | 0 ... 3kVA | 45Hz ... 250Hz | 0.01Hz | 10mV | 1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S500035 | 1.100,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 3A | 0 ... 1.5A | 0 ... 350VA | 45Hz ... 250Hz | 0.01Hz | 10mV | 1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S51005 | 1.270,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 4.2A | 0 ... 2.1A | 0 ... 500VA | 45Hz ... 250Hz | 0.01Hz | 10mV | 0.1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S50007 | 1.230,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 6A | 0 ... 3A | 0 ... 700VA | 45Hz ... 250Hz | 0.01Hz | 10mV | 1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% | |||
| DF-S5101 | 1.430,00 € | Variable AC true sine wave 1 phase | 0 ... 300Vrms L-N | 0 ... 8.4A | 0 ... 4.2A | 0 ... 1kVA | 45Hz ... 250Hz | 0.01Hz | 10mV | 0.1mA | 1W | ±1% | ≤0.01% | ≤2% | ≤2% | ≤1% | ≤1% |