Replacing the Elgar SW5250
Programmable AC source.
What happened to it
Discontinued with no product page — only an end-of-life manual PDF remains. Resellers hold both the first and second result positions.
The substitution that goes wrong
SW-series sources were often bought for standards work. A replacement that reaches the same voltage but cannot sequence a transient envelope will not run those clauses at all.
Specifications to match
- Output voltage, frequency range and phase configuration
- Transient and arbitrary-waveform programming if you test to a standard
- Remote interface compatibility with existing test executives
- Output impedance behaviour under non-linear load
Before you swap the hardware
A replacement that matches on headline power can still fail on the details that keep an existing rack working.
- 01Match output voltage, frequency range and phase configuration.
- 02Confirm transient and waveform programming capability if you test to a standard.
- 03Verify remote interface compatibility with existing test executives.
Where Intepro fits
The closest current equivalent is the AFV-P Programmable AC Source. Every figure below is transcribed from its datasheet and re-checked against that document on each build.
| Power range | 600 VA – 5 kVA |
|---|---|
| Output voltage | 0 - 155Vrms / 0 - 310Vrms, user selectable |
| Output frequency | 40-500Hz (opt. 15-1000Hz) |
| Part numbers | AFV-P-600 · AFV-P-1250 · AFV-P-2500 · AFV-P-5000 |
Where this one stops
The AFV-P is a bench-format source. If the SW5250 was doing cabinet-scale work, or feeding a load that needs more than its rated output, the AFV+ or the AFC is the comparison rather than the AFV-P. Match on the transient and inrush behaviour your test actually exercises, not on the steady-state rating.
Further reading
Send us the spec you have to hit
Include the model you are replacing and what it was doing. We will come back with what matches and what does not.
Request a quote