400Hz 3 Phase 3kVA Frequency Converter
2.Power: 1kVA–300kVA available, single-phase / three-phase optional, industrial-grade static frequency converter
3.Input: 110V / 220V / 380V / 400V / 415V / 440V / 480V ±15%, 50/60Hz
4.Key specs: ±1% voltage regulation, frequency stability ±0.1%, THD <3%, efficiency ≥85%, isolated output transformer, EMC compatible
5.Applications: Aviation electronic testing, aerospace systems, aircraft maintenance power supply, marine equipment testing, 400Hz laboratory simulation
6.Features: IGBT inverter design, pure sine wave output, full protection (over-voltage/over-current/over-heat/short-circuit), LCD real-time monitoring, low harmonic distortion
7.Brand: ACSOON (AF400M series, Xi’an manufacture, industrial reliability, 1-year warranty)
- Product Description
400Hz 3 Phase 3kVA Frequency Converter
400Hz Aviation Power Supply | Industrial Frequency Conversion System
When Power Becomes a Problem?
In many industrial and aviation environments, users face a critical mismatch:
Local grid power is typically 50Hz or 60Hz, but aviation systems, aerospace equipment, and marine test systems require 400Hz stable frequency power.
This leads to real operational issues:
- Aircraft ground equipment cannot be powered directly from grid supply
- Avionics systems fail or behave unpredictably during testing
- Motor and transformer test results are inconsistent
- Laboratory environments cannot simulate real aviation conditions
- Maintenance operations rely on unstable workaround power sources
why aircraft use 400Hz power supply
how to convert 50Hz to 400Hz power system
aviation ground power supply problem solution
Engineering Solution: AF400M Static Frequency Converter
The ACSOON AF400M is a static frequency converter system designed for aviation-grade power conversion, converting standard AC input into a stable 400Hz pure sine wave output.
It is widely used as:
- Aircraft ground power supply system
- Aviation maintenance power converter
- Aerospace laboratory AC power source
- Marine and shipboard 400Hz simulation system
Unlike general inverters, AF400M is designed for continuous industrial duty cycle and high-precision frequency stability.
Typical search terms at this stage:
- static frequency converter 400Hz aviation power supply
- aircraft ground power supply converter 115V 400Hz
- industrial AC power supply 400Hz system

Core Technical Specifications
Before purchasing, engineers and technical teams focus on performance stability.
AF400M is built to meet strict industrial and aviation requirements:
Electrical Performance
- Input: 110V / 220V / 380V / 415V / 440V / 480V ±15%
- Output: 0–520V adjustable (L-L)
- Frequency: 400Hz (adjustable 300–500Hz)
- Voltage regulation: ±1%
- Frequency stability: ±0.1%
- THD: <3% (pure sine wave output)
System Reliability
- Isolated output transformer design
- RS485 communication interface
- Overload capacity up to 125%
- MTBF: 50,000 hours
- Operating temperature: -10°C to 45°C
Monitoring & Control
- Real-time LCD display (Voltage / Current / Frequency / Power Factor)
- Full protection system (over-voltage / over-current / over-heat / short circuit)
At this stage, common technical searches include:
- 400Hz sine wave power supply THD less than 3%
- isolated transformer frequency converter RS485
- aviation power supply voltage stability ±1%
If you need it,Contact us at Email: acpower@acsoonpower.com

Aircraft equipment Frequency Converter Main Features
Compared with standard frequency converters, AF400M provides:
- True 400Hz aviation-grade output stability
- Lower harmonic distortion (<3%) for sensitive equipment
- Strong compatibility with unbalanced loads
- Better thermal stability for continuous operation
- Higher protection level for industrial environments
- Designed specifically for aviation and aerospace testing systems
👉 This is not a general inverter system. It is a mission-critical power infrastructure unit.
Why Global Buyers Choose AF400M
When buyers move to supplier selection, they focus on reliability, origin, and long-term stability.
AF400M is widely selected because it combines:
Industrial Reliability
Designed for continuous operation in aviation maintenance hangars, laboratories, and industrial test environments.
Engineering Stability
Unlike low-cost converters, AF400M maintains stable frequency output even under load variation.
Long Service Life
Industrial-grade design with up to 50,000 hours MTBF ensures reduced downtime and maintenance cost.
Manufacturing Control
Produced in Xi’an industrial facility with strict quality control and testing standards.
Search behavior at this stage:
- best 400Hz power supply manufacturer China
- reliable aviation ground power system supplier
- industrial frequency converter OEM supplier


Aircraft equipment Frequency Converter Field ApplicationsAviation Industry
- Aircraft ground power supply systems
- Avionics testing and calibration
- Maintenance hangar power support
Aerospace & Defense
- Radar system testing power source
- Military electronics simulation systems
- Defense R&D laboratory power supply
Marine Industry
- Shipboard 400Hz power simulation
- Marine electrical system testing
Industrial Laboratories
- 400Hz AC power simulation testing
- Transformer and motor testing systems
Manufacturing & OEM Testing
- Electrical product validation
- Production line quality control systems
Competitive Advantage vs Similar Market Products
| Evaluation Factor | ACSOON AF400M | Standard Frequency Converter |
|---|---|---|
| Output Frequency Stability | ±0.1% | ±1% or higher |
| Waveform Quality | Pure sine wave | Distorted waveform |
| THD Level | <3% | 5%–10% |
| Load Adaptability | Supports unbalanced loads | Limited capability |
| Protection System | Full industrial protection | Basic protection |
| Communication Interface | RS485 available | Not supported |
| Application Level | Aviation / aerospace grade | General industrial use |
| Continuous Operation | Designed for 24/7 duty | Limited duty cycle |
👉 In real engineering environments, stability is more important than nominal power rating.
Technical Support & Cooperation (CTA)
High-frequency power conversion requires precise impedance matching. We recommend verifying your load characteristics with our engineering team before procurement.
Request a Technical Proposal: Send your load motor nameplate or specific test requirements to acpower@acsoonpower.com.
Direct Consultation: Our team will calculate capacity requirements and provide a detailed electrical architecture recommendation within 24 hours.
Reference Documents: For full technical details, please refer to "ACSOON AF60W Static Frequency Converter Technical Specification_2.pdf".
Keyword Coverage Summary
Core Keywords
- static frequency converter 400Hz
- aircraft power supply system
- aviation ground power supply
Technical Keywords
- 400Hz pure sine wave power supply
- isolated transformer frequency converter
- THD <3% AC power supply system
Application Keywords
- aircraft maintenance power supply 115V 400Hz
- aerospace testing power system
- marine 400Hz power converter
Buyer Intent Keywords
- best aviation power supply manufacturer China
- industrial 400Hz converter supplier OEM
- reliable aircraft power system supplier
Regional SEO Keywords
- UAE aviation power supply system
- Europe aerospace power converter
- Israel defense power supply equipment
- Southeast Asia aircraft maintenance power supply

ABOUT US
·28,698+ long-term repeat clients globally with stable repeat orders
·19+ years domestic & export manufacturing experience for aviation ground power equipment
·7,000+ sq.m modern production factory
·24/7 customer service:<30 mins quick response + lifetime after-sales support
·60+ independent patented technologies
·Certified as China National High-Tech Enterprise
·Multiple provincial awards, including Shaanxi AAAAA-Level Credibility Enterprise certification
Long Standing
Customer
Over 19 years
experience
Factory Area
7/24H
High-Quality
Efficiency Service
Our Services

Quality Control
- Every unit tested – 2 hours at 80% load. Check for overheating.
- Output verified – Voltage accuracy at five set points. Record kept.
- Isolation test – 2kV between input and output for 1 minute. No breakdown.
- Knob cycle – 500 full rotations on each potentiometer. No scratchy spots.
R&D Results
- Cost reduction – Replaced digital display with analog meters. Cut cost by 20%.
- Transformer – Used a standard toroid instead of custom wound. Still meets specs.
- Enclosure – Painted steel instead of powder coat. Same protection, lower cost.
- User feedback – Hobbyists wanted bigger knobs. Added large rubberized knobs.


Packaging and Transportation
- Shipped from Xi'an – Cardboard box with foam inserts. Fits a courier.
- Included – Power cord (1.5m), output cable with universal socket, printed quick start.
- Manual – One sheet of paper. Double‑sided. No USB.
- Pallet – 8 units per pallet for dealers.
After‑Sales Service
- 1‑year warranty – Return to Xi'an for repair. Parts and labor.
- Spare parts (transformer, fan, meters) kept in Xi'an. Express shipping.
- Email support – We answer within one business day. Simple questions only.


Qualification Certification
- CE – LVD and EMC tested.
- ISO 9001:2015 – Our Xi'an facility.
- RoHS – Compliant.
Request Your Custom Solution
Ready to stabilize your power and eliminate grid-related failures?
Don't guess your capacity requirements. Send us your motor/machine nameplate photos and your local grid voltage/frequency. Our engineers will provide a verified technical solution and quote within 24 hours.
Email:
acpower@acsoonpower.com; sales1@acsoonpower.com
WhatsApp/Direct Inquiry: [Click here to contact our expert team]
FAQ
Q1: Is this suitable for aircraft maintenance use?
Yes. It is commonly used in MRO environments where 400Hz aircraft power is required.
Q2: Can it simulate aircraft power conditions accurately?
Yes, it provides stable 115V/120V 400Hz output with low harmonic distortion.
Q3: Does it support both single-phase and three-phase output?
Yes, both configurations are available depending on system size.
Q4: What kind of load can it handle?
It is designed for linear and mixed industrial loads with isolated transformer support.
Q5: Is it suitable for continuous operation?
Yes, it is designed for industrial duty cycles with long-term operation in mind.
Q6:How can I get more details?
A:Click here.Send inquiry get price and specification.
Contact Us
For technical specifications or global solutions for the 3 Phase AC Frequency Converter 400Hz: acpower@acsoonpower.com, or submit your requirements using the form at the bottom of our website.
The ACSOON AF400M Static Frequency Converter is designed for industries where power stability directly affects system safety, testing accuracy, and operational reliability.
It is widely used in aviation, aerospace, marine, and industrial laboratory environments where standard grid power cannot meet engineering requirements.
For buyers who require stable 400Hz output, low harmonic distortion, and long-term industrial reliability, AF400M is a proven engineering-grade solution rather than a general-purpose converter.








