AC LABORATORY POWER SUPPLIES

Our AC laboratory power supplies provide adjustable sinusoidal output voltage for functional testing, stress testing, 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 … 300 Vrms L-N
(0 … 3 kVrms L-N)*		 0 … 300 Vrms L-N / 0 … 520 Vrms L-L
(0 … 3 kVrms L-N)*		 0 … 300 Vrms L-N
(0 … 3 kVrms 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: 47 Hz … 63 Hz
/ 100 Hz* / 200 Hz*		 47 Hz … 63 Hz
/ 100 Hz* / 200 Hz*		 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

The DF-C Series offers single- and three-phase AC power supplies with optional remote control for industrial test benches. Within their rated parameters, the units are designed for continuous testing. The frequency is adjustable from 47 Hz to 63 Hz, with optional 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

 

The DF-CM Series AC power supplies deliver single- or three-phase sinusoidal AC voltage at 350–450 Hz or, upon request, at 200–2500 Hz. Even at the highest specified frequency, the units are designed for continuous operation within their rated parameters. Optional digital or analog interfaces complement the front-panel controls. The output is potential-free 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

 

The DF-S Series consists of compact AC laboratory power supplies with adjustable sinusoidal AC voltage, an output frequency of 45–250 Hz, and front-panel controls. DF-S51 models also feature RS-232. An external output enable is available as an option. For short-term load peaks, 300% of the rated power is available for 2 seconds.

 

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