Preen AFV-S Series

Programmable AC Power Source, 600VA to 5kVA

Straightforward AC-only test lines — home appliance testing, LED lighting qualification, and general manufacturing test stations — don't need the DC output mode or disturbance simulation capability of Preen's higher-tier AC sources; what they need is a compact, reliable programmable AC source covering the standard power and frequency range production testing actually requires. Preen's AFV-S series is built for exactly this segment, spanning 600VA to 5000VA with 0-310V output across a 40-500Hz frequency range.

Standard connectivity covers RS-232, RS-485, and PLC Remote interfaces, with Ethernet, Analog, and USB available as options — sufficient for most production-line integration without needing the AFV-P's more extensive standard interface set. The 5-inch touch screen displays 4 quick-access shortcuts drawn from 20 stored memory sets, a detail that matters more than it might first appear for a production line repeating the same handful of test profiles throughout a shift: operators can switch between stored configurations in seconds rather than re-entering parameters each time, and a screen lock function prevents accidental changes mid-run.

THD is held to ≤0.3% at 110V/220V, 50/60Hz — the standard mains conditions most home appliance and lighting test programmes actually test against — with response time under 300µs and over current foldback protection. The compact 2U (600-2500VA) or 4U (5000VA) form factor keeps rack space requirements modest for production floor installation.

AFV-S Series

Available as a Containerized / IP54 Option

Like Preen's BPS shore power series, the AFV-S Series can be built into a customized outdoor container or upgraded to an IP54-rated enclosure as an optional configuration — useful for ports, construction sites, remote installations, and other high humidity, heat, dust, or corrosion-exposed environments. Standard indoor chassis remain the default; contact Finch to configure a containerized or IP54 version for your application.

AFV-S Series — All Models

Compact programmable AC source, 600VA-5000VA, 40-500Hz, no DC output mode.

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Technical Specifications

Output Phase	Single-phase (1Ø), 2 Wire + G
Output Power Range	600VA–5000VA
Output Voltage Range	0-155/0-310Vrms, user selectable
Output Frequency Range	40-500Hz
Voltage Accuracy	±(1% of setting + 0.1% F.S.)
Frequency Accuracy	±0.02%
Total Harmonic Distortion (THD)	≤0.3% at 110V/220V, 50Hz/60Hz · ≤0.5% (resistive load)
Line Regulation	±0.1V
Load Regulation	≤0.07% F.S. (resistive load)
Response Time	≤300µs
Crest Factor	≥3
Inrush Current	≤4× max. output current (RMS)
Efficiency	≥77-80% at max. power (varies by model)
Program Mode / Memories	20 Memories, 4 Shortcuts
Protections	OVP, LVP, OCP, OPP, OTP, RCP, Fan Fail & AMP Fail
Remote Interfaces	Standard: RS-232, RS-485, PLC Remote In&Out · Optional: Ethernet, Analog, USB
HMI	5" touch screen with rotary knob
Operating Temperature	0°C–40°C
Standout Feature — Over Current Foldback	Maintains constant output current while output voltage varies with load impedance, as an alternative to shutdown protection

Power	Voltage	Frequency	Max Current
AFV-S-600	600VA	0-155/0-310Vrms	40-500Hz	10A	Enquire
AFV-S-1250	1250VA	0-155/0-310Vrms	40-500Hz	20A	Enquire
AFV-S-2500	2500VA	0-155/0-310Vrms	40-500Hz	20A	Enquire
AFV-S-5000	5000VA	0-155/0-310Vrms	40-500Hz	40A	Enquire

Frequently Asked Questions

When is the AFV-S the right choice over the AFV-P?

The AFV-S suits AC-only test lines with no requirement for DC output or Power Line Disturbance simulation — home appliance, LED lighting, and general manufacturing lines fit this profile well. Where a test programme needs DC output from the same instrument, or IEC 61000-4-11/-14/-28 pre-compliance testing, the AFV-P is the appropriate choice instead. Finch has a dedicated comparison covering both series for teams evaluating this decision in more depth.

What's the practical benefit of 20 stored memory sets with 4 quick-access shortcuts?

Production lines commonly repeat a small set of standard test profiles across a shift. Storing up to 20 configurations and surfacing 4 as quick-access shortcuts lets an operator switch between the most-used test profiles in seconds, rather than manually re-entering voltage, frequency, and other parameters for each test run.

Why does the frequency range stop at 500Hz rather than extending further like other Preen AC sources?

The AFV-S is scoped specifically for standard AC-only test applications, where 40-500Hz covers the practical range needed for home appliance, lighting, and general manufacturing testing. Applications needing a wider frequency range — aerospace, defence, or specialised industrial testing — are better served by the AFV+ series, which extends up to 2000Hz on its A-variant models.

Preen AFV-S Series

AFV-S Series — All Models

Technical Specifications

Frequently Asked Questions

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