AF-G2 Entry-Level Custom Power Supply — A Tethered UAV Power Solution

In the world of tethered drones and UAVs (unmanned aerial vehicles), reliable, high-voltage, and stable ground power is critical. The AF-G2 Entry-Level Custom Power Supply from UAVMODEL is engineered for tethered DIY applications. With a 220 VAC input, adjustable output up to 4 kW, and a design that separates winch motor power from the high-voltage link, the AF-G2 delivers a flexible, robust solution for aerial inspection, surveying, security, and more.

This article provides a technical and application overview, integration guidance, comparisons, and practical tips to help buyers and system integrators understand its capabilities—and to strengthen search visibility around tethered UAV power systems.

1. Technical Overview

1.1 Basic Specifications

• Dimensions: 420 × 200 × 95 mm (L × W × H)
• Weight: 6.2 kg ± 0.3 kg
• Input: 220 VAC
• Output Power: 0–4,000 W (adjustable)
• Output Voltage: 0–500 V DC (default 420 V)
• Outputs:
  • High-voltage DC (default 420 V) for the tether cable
  • 24 V, 130 W auxiliary output for the winch motor
• Monitoring: Real-time voltage, current/power, and temperature display

1.2 Functional Features

• Dual-output design: Separates tether power from winch power to improve safety and reliability.
• Adjustable output: Tune voltage/power to match different UAV platforms and cable lengths.
• Onboard display: Quick, local status and control.
• Remote configuration: Via WeChat mini-program, Bluetooth, or CAN-based interfaces (where supported).
• Weather-aware architecture: Keeping high voltage isolated from exposed winch assemblies reduces risk.

1.3 Display, Control & Interface

AF-G2 offers multiple ways to configure and monitor the system: an onboard screen for direct access and wireless/remote options for parameter adjustment, mode switching, and telemetry—useful during field deployments and integration.

2. Design Rationale & Use Cases

2.1 Why a Tethered Power Supply Matters

Tethered UAV systems use a physical cable to supply continuous power from the ground, enabling flights measured in hours rather than minutes. A dedicated ground power unit like AF-G2 improves efficiency, safety, and stability by delivering high, stable voltage across long runs and by providing monitoring and protection.

2.2 Separation of Ground & Winch Power

• Safety: Lower-voltage winch circuits reduce exposure risk on mechanical assemblies.
• Fault isolation: Issues on the winch side are less likely to compromise the high-voltage section.
• Simplified winch design: Insulation and wiring demands are easier to satisfy at 24 V.

2.3 Adjustable Output & Scalability

With 0–500 V and up to 4 kW available, operators can compensate for cable losses, support varying payloads, or standardize a single ground unit across multiple tethered platforms.

3. Applications & Scenarios

3.1 Long-Endurance UAV Operation

For surveillance, broadcasting, or persistent monitoring, tethered power solves the endurance problem. AF-G2 provides the stable, high-voltage DC needed for continuous flight.

3.2 Industrial Inspection & Security

Power plants, pipelines, oil & gas sites, and border security benefit from predictable, safe ground power. AF-G2 supports mission uptime and remote adjustments.

3.3 Remote Monitoring & Communications

Tethered UAVs can act as comms relays or sensor hubs. AF-G2 sustains onboard electronics and payloads requiring steady power.

3.4 Research, Science & Surveying

Mapping, meteorology, environmental monitoring, and R&D deployments require stable power and long airtime—AF-G2 is built for these demands.

4. Integration & System Architecture

4.1 Cable Design & High-Voltage Link

• Account for resistive losses (voltage drop) over length.
• Use proper insulation, shielding, and HV-rated connectors.
• Leverage adjustable output to ensure adequate UAV-side voltage.

4.2 Winch Motor Interface

• Power the winch via the 24 V, 130 W auxiliary output.
• Use current-limited drivers and over-current/short protection.
• Protect wiring at points of repeated motion and abrasion.

4.3 Grounding, Safety & Protection

• Implement proper earthing and HV creepage/clearance.
• Include over-voltage, over-current, and surge protection.
• Monitor internal temperature; provide emergency shutoff where appropriate.

4.4 Control & Communication

Configure AF-G2 locally or via supported remote channels (e.g., WeChat mini-program, Bluetooth, CAN). Remote control enables parameter tuning and health monitoring during missions.

5. Advantages, Limitations & Trade-offs

5.1 Advantages Over Simpler Power Supplies

• Wide envelope: Up to 500 V and 4 kW; adjustable to suit multiple platforms.
• Dual outputs: Safer, modular architecture for tether vs. winch.
• Remote control & feedback: Streamlines integration and field operation.
• Compact for capability: Practical footprint for mobile deployments.

5.2 Limitations & Constraints

• Input requirement: 220 VAC; other mains may need adaptation.
• Thermal design: Proper ventilation is essential at higher loads.
• System complexity: HV systems demand careful design and testing.

5.3 Best Practices & Mitigations

• Choose cable gauge to minimize voltage drop.
• Ensure ventilation and heat sinking; avoid continuous max load.
• Use HV-rated connectors and maintain clean, secure terminations.
• Add fuses/breakers and perform full-load tests before missions.

6. Comparisons & Competitive Landscape

6.1 Alternative Tethered Power Supplies

Market options vary by voltage/power range, telemetry features, and modularity. AF-G2 distinguishes itself with adjustable high-voltage output, dual-output safety, and practical remote interfaces.

6.2 Feature Differentiation

• Adjustable 0–500 V vs. fixed-voltage units
• Built-in 24 V winch output vs. single-output designs
• Remote configuration and monitoring vs. local-only controls

6.3 Price & Value Position

For professional users who prioritize reliability, safety, and adaptability, AF-G2 offers strong value by reducing integration effort and enabling multi-platform use.

7. Installation, Operation & Maintenance

7.1 Installation Steps

1. Mount in a dry, ventilated enclosure.
2. Connect 220 VAC input via a suitable breaker.
3. Route and secure the tether cable; verify insulation and shielding.
4. Connect UAV-side HV output and 24 V winch output.
5. Verify grounding/earthing.
6. Power on and perform initial configuration/validation.

7.2 Operation & Configuration

• Set voltage and power limits via display or remote interface.
• Monitor voltage, current, and temperature during operation.
• Adjust for cable length and payload changes.
• Use alarms and safe-shutdown thresholds for protection.

7.3 Maintenance & Troubleshooting

• Inspect connectors/cables for wear, corrosion, and insulation damage.
• Keep vents clear; check fans/heat sinks regularly.
• Perform periodic full-load tests; log operating data for trend analysis.
• If anomalies arise (e.g., overheating, over-current), isolate sections and retest.

8. SEO & Marketing Suggestions

8.1 Keyword Targets & Phrases

Incorporate these naturally in headings, body copy, alt text, and meta description:

• tethered UAV power supply
• high-voltage UAV ground power system
• UAV tether power solution
• adjustable DC power supply for drones
• 420 V drone tether power
• industrial drone continuous flight
• dual-output UAV power supply

8.2 Content Strategy for Drone/UAV Audience

• Publish “How to choose a tethered UAV power supply.”
• Write “Reducing cable losses in tethered drone systems.”
• Add case studies showing AF-G2 in real deployments.
• Offer downloadable wiring diagrams and integration checklists.

8.3 Linking & Backlink Suggestions

• Internally link to related products (winches, tether cables, UAV platforms).
• Seek backlinks from UAV forums, engineering blogs, and conference pages.
• Provide datasheets or white papers that others can cite.

9. Conclusion & Call to Action

The AF-G2 Entry-Level Custom Power Supply is a powerful, flexible, and intelligent ground unit for tethered UAV systems. Its dual-output architecture, adjustable 0–500 V range, and integrated monitoring/remote control enable safe, stable, and scalable long-endurance operations.

Ready to integrate AF-G2 into your tethered UAV? Contact our team for technical guidance, or explore related components in our store to build a complete tethered solution.

Frequently Asked Questions

What input power does AF-G2 require?

It uses 220 VAC input. For other mains standards, an appropriate adapter or inverter may be required.

Can I adjust the output voltage and power?

Yes. AF-G2 allows 0–500 V DC and up to 4 kW output (within system limits), helping you compensate for cable length and payload power draw.

Why is the winch powered separately?

Separating winch power (24 V) from the HV tether link improves safety, fault isolation, and makes the winch’s electrical design simpler.

Is remote configuration supported?

Yes. AF-G2 supports local display control and remote configuration/monitoring via supported channels (e.g., WeChat mini-program, Bluetooth, CAN).

What are the key safety practices?

Use HV-rated connectors, proper grounding, surge and over-current protection, and ensure adequate thermal management during high-load operation.