Isolated Variable AC Source
2.Power: 1kVA, 2kVA, 3kVA, 5kVA single‑phase
3.Input: 220V ±15% single‑phase, 50/60Hz
4.Key specs: ±1% voltage regulation, THD <3%, full galvanic isolation
5.Applications: Ground‑loop elimination, medical device power, sensitive instrumentation, floating AC for test circuits
6.Key features: Output fully isolated from input, low leakage current, simple knob controls
7.Brand: ACSOON (1‑year warranty, made in Xi’an).
- Product Description
Sometimes the wall outlet is not your friend. You get ground loops. You get spikes from the elevator motor. You get leakage current that messes up your measurements. That's where an Isolated Variable AC Source earns its keep.It's not just a variac. Inside, there's a rectifier, a DC bus, a high‑frequency inverter, and then a dedicated isolation transformer. The output is completely floating – no connection to the input at all. You can ground one side, or leave it floating, or even bias it to a DC offset. Try that with a standard bench variac and you'll pop a breaker.We built this for people who work on medical devices, precision sensors, or any equipment where ground currents create false readings. It's not the cheapest AC source we make. But it's the only one where the output truly floats.
| Parameter | Specification |
|---|---|
| Model Series | ACSOON ACSW Series |
| Model Number | ACSW‑110002 (2kVA) |
| Input | 220V ±15% single‑phase, 50/60Hz |
| Output Voltage | 0‑150V / 0‑300V (L‑N) switchable |
| Output Frequency | 45‑200Hz, continuous |
| Output Power | 1kVA, 2kVA, 3kVA, 5kVA |
| Output THD | <3% at linear load |
| Voltage Regulation | ±1% FS |
| Isolation | 2.5kVAC input‑output, 1 minute |
| Leakage Current | <100µA at 230V input |
| Efficiency | 83‑86% |
| Overload | 125% for 30 seconds |
| Display | 4‑digit LED (V, A, Hz ,P) |
| Protections | Over‑current, short circuit, over‑temperature |
| Cooling | Temperature‑controlled fan |
Isolated Variable AC Source Main Features
Two voltage ranges – 0‑150V and 0‑300V. Toggle switch on the front.
Frequency dial – 45 to 200Hz continuous. Covers 50Hz, 60Hz, and motor test ranges.
Output on/off with LED – Red when off, green when on. No surprises.
Thermal protection – Fan‑cooled. Unit shuts down if overheated, resets automatically.
Why Choose ACSOON Isolated Variable AC Source?
True isolation – Input and output share no electrical path. Dielectric strength 2.5kV. No ground loops, no common mode noise.
Low leakage – Designed for medical and lab use. Leakage current under 100µA at 230V. Passes the finger test.
Adjustable voltage and frequency – 0‑300V, 45‑200Hz. Same flexibility as our standard units, but with isolation.
Simple operation – Two knobs and an output button. No complex programming needed.
Isolated Variable AC Source Application Areas
Medical device testing – Patient‑connected equipment requires isolated power for leakage current measurements. This unit gives you that.
Sensor and transducer labs – Floating the power supply kills ground loops that ruin low‑level signal measurements.
Repair of switch‑mode power supplies – When a power supply has a live chassis, an isolated source lets you probe safely.
Educational demonstrations – Show students how isolation affects scope measurements without blowing up the lab.
Our Services
Quality Control
Isolation test – Every unit sees 2.5kV between input and output for 1 minute. No breakdown allowed.
Leakage measurement – At 230V input, leakage current measured with a medical‑grade tester. Must stay under 100µA.
Full load burn‑in – 2 hours at 80% load, 30 minutes at 100% load. Record temp rise.
Calibration check – Voltage and frequency accuracy at 5 points. Sticker on the side.
R&D Results
Transformers are expensive – We tried a cheaper off‑the‑shelf isolation transformer. It buzzed and ran hot. Now we wind our own with grain‑oriented steel. Quiet and cool.
Capacitor selection – Used standard capacitors first. They leaked too much AC across the isolation barrier. Switched to Y‑rated safety caps designed for medical isolation.
Customer feedback – A lab asked for a way to ground one side of the output. Added a removable grounding link on the rear panel.
Fan noise – First version ran the fan all the time. Too annoying for quiet labs. Now fan only runs when internal temp exceeds 50°C.
Packaging and Transportation
Shipped from Xi'an – Woodern carton . Fits in a courier box.
Manual – Full manual on USB. Also downloadable from our site.
Pallet – 8 units per pallet for bulk orders.
After‑Sales Service
1‑year warranty – Return to Xi'an for repair. We cover parts and labor.
Spare parts (IGBTs, fan, control board) kept in Xi'an. Ship express worldwide.
Email support – Real person replies. Usually within one business day.
Qualification Certification
CE – LVD and EMC tested；IEC 60601‑1 compliant – Leakage and isolation meet medical electrical equipment standards；ISO 9001:2015 – Our Xi'an facility；RoHS – All components.
FAQ |
|---|
| Q1: What's the difference between this and a regular AC source? |
| A: A regular AC source maybe has isolation, but often uses an autotransformer or lacks full input‑output separation. This unit has a double‑wound isolation transformer, plus safety capacitors designed for medical isolation. The leakage current is an order of magnitude lower. |
| Q2: Can I ground the output? |
| A: Yes. The output is floating, but there's a removable grounding link on the rear. Install it and the output neutral is tied to earth ground. Remove it and it's fully floating. Your choice. |
| Q3: Is this safe to use on a patient‑connected medical device? |
| A: For actual patient contact (BF/CF rated), you still need a certified medical‑grade isolation transformer and proper leakage testing. This unit is designed to power such tests, not to serve as the patient isolation barrier. Consult the relevant standard. |
| Q4: Why does the frequency only go to 200Hz, not 400Hz? |
| A: The isolation transformer core losses increase with frequency. At 400Hz, the transformer would overheat and the power rating would drop significantly. For 400Hz avionics work, we have a different model (ACF400M). Ask sales. |
| Q5: What's the lead time from Xi'an? |
| A: 2‑3 weeks for most models. The 5kVA version takes 4 weeks because we build the transformer to order. |
Contact Us
For technical specifications or global solutions for the Isolated Variable AC Source: acpower@acsoonpower.com, or submit your requirements using the form at the bottom of our website.
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