Onboard Power Supply A5(400S48,1.5kg) Kitefly

Onboard Power Supply A5

AF-400S48-5K  |  4500W Rated / 5000W Peak  |  IP55  |  Kitefly Tethered

Product Overview

The Kitefly AF-400S48-5K is the highest-power onboard module in the Kitefly tethered power supply series. Delivering a rated output of 4500W with peak capacity of 5000W at 48Vdc/80A, it is engineered for the most demanding heavy-payload tethered UAV platforms where sustained high-power delivery and mission-critical reliability are non-negotiable. Compatible with Kitefly G7 and G15 tethered ground stations, it eliminates battery endurance constraints entirely — enabling continuous flight for as long as the mission demands.

Featuring forced air-cooling heat dissipation, three-proof PCB coating, and a highly reliable modular design with passive parallel current sharing, the A5 is built to perform in the harshest field environments — from desert heat in the Middle East to high-humidity coastal deployments.

Key Specifications

Why Choose the A5 for Your Tethered Drone System?

The AF-400S48-5K is purpose-built for the most power-intensive tethered UAV applications — large multi-rotor heavy-lift platforms, high-power tethered lighting systems, multi-sensor surveillance arrays, and industrial inspection drones where no compromise on power delivery is acceptable.

As the top-tier model in the Kitefly onboard module series, the A5 delivers 4500W rated and 5000W peak power — providing the headroom needed to handle aggressive flight maneuvers, heavy payloads, and sustained high-duty-cycle operations without voltage drops or interruptions.

Its parallel current-sharing design with redundancy function allows multiple A5 units to be combined for ultra-high-power configurations. Three-proof PCB coating, IP55 weatherproofing, and a -40°C cold-start rating ensure reliable performance from freezing mountain environments to hot and humid tropical deployments.

Protection & Safety Features

• Output overcurrent protection: 150A threshold (hiccup mode, auto-recovery)

• Output short-circuit protection (hiccup mode, auto-recovery)

• Over-temperature protection with auto-recovery

• Input overvoltage protection: 420–450V (auto-recovery)

• Input undervoltage protection: 200–250V (auto-recovery)

• Output overvoltage protection: 56V

• Parallel current sharing with redundancy function

• Insulation: Input to output 2500Vac withstand voltage

• EMC compliant: IEC/EN61000-4-5 Surge, IEC61000-4-4 Level 4 EFT, EN55022 Class A

• Power status indicator: 2 built-in green LEDs (on during normal operation, off if fault)

Frequently Asked Questions

Q: What is the difference between the A5 and the A3.5 in the Kitefly lineup?

The A5 (AF-400S48-5K) delivers 4500W rated and 5000W peak power, making it the highest-power model in the standard Kitefly onboard series. The A3.5 (AF-400S48-3.5K) is rated at 3200W with a 5000W transient peak. Both share the same 48V output architecture and IP55 rating, but the A5 is designed for heavier platforms and applications requiring sustained higher current output at 80A. The A5 is also compatible with the G15 ground station, which the A3.5 is not.

Q: How long can a drone fly continuously with the A5 tethered power module?

The Kitefly tethered power system removes battery endurance as a limiting factor entirely. Unlike battery-powered drones limited to 20–40 minutes per charge, a drone connected to the A5 can fly continuously for hours or days, depending on mission requirements. Actual flight duration is governed by the drone's own motor endurance, thermal performance, and mechanical lifespan — not the power supply. For extended high-power missions, follow your drone manufacturer's maintenance recommendations to protect motor and component longevity.

Q: Why does the drone need to take off with a fully charged battery?

The drone must carry a fully charged battery at all times during tethered flight. If ground power is interrupted for any reason, the system automatically switches to battery power with zero voltage transient drop, enabling a safe emergency landing. The A5 operates in parallel with the battery — not as a replacement for it.

Q: Can multiple A5 units be used together for even higher power?

Yes. The A5 supports parallel current sharing with redundancy function, allowing multiple units to be combined for ultra-high-power configurations. Contact our team to discuss your specific power architecture and payload requirements.

Q: Is the A5 suitable for high-temperature environments like the Middle East?

Yes. The A5 is rated for operation from -40°C to +55°C with forced air cooling, carries an IP55 weatherproof rating, and is certified for altitudes up to 5000m. For extreme heat deployments, we recommend confirming your installation's thermal management setup with our technical team.

Q: What ground stations are compatible with the A5?

The AF-400S48-5K is compatible with Kitefly G7 and G15 tethered ground power stations. Please confirm your ground station model before ordering. Contact us if you need compatibility guidance for your specific setup.

Q: What is the lead time and availability?

The A5 is available in stock for immediate shipment. If current stock is insufficient for your order, lead time is 2–3 weeks. Contact Ms. Susy for real-time availability and volume pricing.

Related Products

A1.5 (400S24, 380g, 1500W)  |  A2 (400S48, 530g, 2000W)  |  A2.5 (400S24, 532g, 2500W)  |  A3.5 (400S48, 900g, 3200W/5000W peak)  |  A4 (400S50, 930g, 3500W/4300W peak)

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