AC LABORATORY POWER SUPPLIES

Our AC laboratory power supplies provide adjustable sinusoidal output voltage for functional tests, stress tests, and powering frequency-dependent loads. The compact DF-S Series, the high-performance DF-C Series, and the DF-CM Series for higher frequencies each have different areas of focus. Compare the number of phases, voltage range, apparent power, frequency, and interfaces to find the right AC power supply for your test setup. 

  DF-C63XXX Series DF-C61XXX Series DF-CM63XXX Series DF-CM61XXX Series DF-S51XXX Series DF-S50XXX Series
Output phases: 3 Three-phase current 1 3 Three-phase current 1 1 1
Voltage range: 0 … 300 Vrms L-N / 0 … 520 Vrms L-L
(0 … 3 kVrms L-N)*		 0 … 300Vrms L-N
(0 … 3kVrms L-N)*		 0 … 300 Vrms L-N / 0 … 520 Vrms L-L
(0 … 3 kVrms L-N)*		 0 … 300Vrms L-N
(0 … 3kVrms L-N)*		 0 ... 300Vrms L-N 0 ... 300Vrms L-N
Current range: 0 ... 1260A LV** / 0 ... 630A FS**
(0 ... 15kA L-N)*		 0 ... 540A LV** / 0 ... 270A FS**
(0 ... 15kA L-N)*		 0 ... 1260A LV** / 0 ... 630A FS**
(0 ... 15kA L-N)*		 0 ... 540A LV** / 0 ... 270A FS**
(0 ... 15kA L-N)*		 0 ... 42A L-N 0 ... 42A L-N
Frequency range: 47Hz … 63Hz
/100Hz*/200Hz*		 47Hz … 63Hz
/100Hz*/200Hz*		 350Hz ... 450Hz
(200Hz ... 2500Hz)*		 350Hz ... 450Hz
(200Hz ... 2500Hz)*		 45Hz ... 250Hz 45Hz ... 250Hz
Power range: 0 ... 1MVA 0 ... 1MVA 0 ... 1MVA 0 ... 1MVA 0 ... 5KVA 0 ... 1200VA
Cabinet: Stand-alone Rack Stand-alone Rack Stand-alone Rack Stand-alone Rack Table-top unit Table-top unit
Regulation: U U U U U U
Load regulation U: ≤1% ≤1% ≤1% ≤1% ≤1% ≤1%
Mains regulation U: ≤1% ≤1% ≤1% ≤1% ≤1% ≤1%
Frequency stability: ≤0.1% FS ≤0.1% FS ≤0.1% FS ≤0.1% FS ≤0.01% ≤0.01%
Voltage stability: ±1% ±1% ±1% ±1% ±1% ±1%
Harmonic distortion: ≤2% ≤2% ≤2% ≤2% ≤2% ≤2%
Crown factor deviation: ≤2% ≤2% ≤2% ≤2% ≤2% ≤2%
Recovery time (10% → 90% load): ≤15ms ≤15ms ≤15ms ≤15ms ≤15ms ≤15ms
Display accuracy U: ±1% FS ±1% FS ±1% FS ±1% FS ±0.5% FS + 5 dig ±0.5% FS + 5 dig
Display accuracy I: ±0.5% FS + 5 dig ±0.5% FS + 5 dig ≤0.5% rdg + (±0.2% FS) ≤0.5% rdg + (±0.2% FS) ±0.5% FS + 5 dig ±0.5% FS + 5 dig
Display accuracy P: ±0.5% FS + 5 dig ±0.5% FS + 5 dig ≤0.5% rdg + (±0.2% FS) ≤0.5% rdg + (±0.2% FS) ±0.5% FS + 5 dig ±0.5% FS + 5 dig
Display accuracy F: ≤0.5% of reading ≤0.5% of reading ≤0.5% of reading ≤0.5% of reading ±0.01% FS + 5 dig ±0.01% FS + 5 dig
Setting accuracy U: ±1% FS ±1% FS ±1% FS ±1% FS ±1% FS ±1% FS
Setting accuracy F: ±0.1% FS ±0.1% FS ±0.1% FS ±0.1% FS ±0.1% FS ±0.1% FS
Ext. control analogue: Yes* Yes* Yes* Yes* No No
Ext. feedback analogue: Yes* Yes* Yes* Yes* No No
RS232: Yes* Yes* Yes* Yes* Yes No
RS485: Yes* Yes* Yes* Yes* No No
RS422: No No No No No No
Open protocol: Yes* Yes* Yes* Yes* Yes -
Modbus RTU: Yes* Yes* Yes* Yes* No -
SCPI: No No No No No -
Interlock: Yes* Yes* Yes* Yes* Yes* Yes*
External Output On/Off: Yes* Yes* Yes* Yes* Yes* Yes*

* Optional
* LV = high voltage range 0 - 150Vrms L-N / FS = high voltage range 0 - 300Vrms L-N

High-performance AC power supply for your test bench: The DF-C Series combines single- and three-phase sine-wave power supply with user-friendly operation and optional digital or analog remote control. Designed for industrial endurance testing within rated parameters, with 47 Hz … 63 Hz and optional additional fixed frequencies of 100 Hz and 200 Hz.

 

Maximum values for the series:
3 kVrms L-N / 47 Hz to 63 Hz / 100 Hz* / 200 Hz* / 15 kA per phase / 1 MVA / ØPL = 0.31 €/VA

 

Wider frequency range for demanding tests: The DF-CM series offers single- and three-phase sinusoidal power supply with frequencies ranging from 350 Hz to 450 Hz, and from 200 Hz to 2,500 Hz upon request. Designed for continuous operation even at the highest specified frequency, with optional digital or analog remote control and a potential-free output as standard.

 

Maximum values for the series:
3 kVrms L-N / 350 Hz to 450 Hz / 200 Hz to 2,500 Hz* / 15 kA per phase / 1 MVA / ØPL = 0.70 €/VA

 

Flexible " AC" testing in a compact footprint: The DF-S Series combines sinusoidal AC voltage (45 Hz … 250 Hz) with convenient front-panel operation in a benchtop enclosure. DF-S51 models feature RS-232 connectivity. An interlock is available as an option. The overload capacity of 300% of the rated power for 2 seconds accommodates short-term load spikes.

 

Maximum ratings for the series:
300 Vrms L-N / 42 A / 5 kVA / ØPL = 1.66€/VA