650V-800V On Board Power Supply Tethered Drone Accessories WF-800S50-8K Kitefly

Product Specification

Product Overview

The WF-800S50-8K is a high-voltage isolated DC-DC onboard power module developed for tethered UAV systems operating from elevated DC bus ground stations. It converts 680-800Vdc input to a tightly regulated 60Vdc output at up to 8KW, making it suitable for high-power tethered drone platforms that require compact size, low weight, high conversion efficiency, and stable voltage delivery during long-duration airborne operation.

This module uses an aluminum enclosure with forced-air cooling and a waterproof outdoor-oriented structure. According to the product manual, peak operating efficiency reaches ≥97%, output voltage regulation is ±1%, and the design includes input over/under-voltage protection, output over-voltage protection, current limiting, short-circuit protection, and over-temperature protection. With IP54 protection, three-proof PCB treatment, and salt-fog resistance measures, the WF-800S50-8K is designed for demanding field environments rather than light indoor duty.

Key Specifications

Why Choose the WF-800S50-8K for Your Tethered Drone System?

The WF-800S50-8K is positioned for platforms that need much higher onboard power than 4KW-class modules while still requiring a compact airborne package. Its 8KW output and 134A rated current support heavier payload architectures, larger lighting systems, higher-consumption surveillance payloads, and other tethered drone use cases where stable regulated DC output matters more than low-cost step-ratio conversion.

Compared with lower-power airborne converters, the WF-800S50-8K gives more headroom for platform integration while maintaining industrial-grade protection logic. The 680-800Vdc input architecture helps reduce transmission current on the tether side, improving overall system efficiency in long-cable deployments. Its aluminum housing, IP54 construction, ≤55dB(A) system noise target, and anti-moisture / anti-mildew / anti-salt-fog treatment make it a better fit for real outdoor project delivery than lab-grade power modules.

Protection & Safety Features

· Input undervoltage protection: 620-640Vdc (recovery ≤650Vdc; hysteresis >10V)

· Input overvoltage protection: 820-840Vdc (recovery ≥800Vdc; hysteresis >10V)

· Input reverse-connection protection: no damage under 800Vdc reverse input

· Output overvoltage protection: 63-66Vdc (auto-recovery)

· Output overcurrent protection: 155-175A (auto-recovery)

· Output short-circuit protection: available with auto-recovery

· Over-temperature protection: 75°C shell temperature; recovery at 65°C

· Withstand voltage: input-output 2500Vdc / 2mA / 1min; input-enclosure 2000Vdc; output-enclosure 500Vdc

· Insulation resistance: ≥10MΩ at 500Vdc

· PCB flame retardant grade: V-0; additional cable and insulating-material flame-retardant requirements applied

· System noise: ≤55dB(A)

· EMC / immunity references listed in the manual include EN55022, EN55024, and IEC 61000-4 series tests

Frequently Asked Questions

Q: What input voltage does the WF-800S50-8K require?

The module is designed for a 680-800Vdc input range, with 750Vdc as the rated input point. It should be paired only with tethered ground stations or DC bus systems capable of providing stable voltage within that range.

Q: Is the output fixed or does it follow input voltage changes?

The WF-800S50-8K is a regulated DC-DC converter, not a simple step-ratio converter. Rated output is 60Vdc, with an output range of 57-60.5Vdc and voltage regulation accuracy of ±1%.

Q: What kind of tethered drone applications is it suitable for?

It is suitable for high-power tethered UAV systems that need 8KW-class onboard conversion, such as heavy-duty tethered lighting, persistent surveillance platforms, and other drone payload architectures requiring stable 60Vdc airborne power.

Q: Is it suitable for outdoor use?

Yes. The manual specifies IP54 protection, aluminum housing, self-contained air cooling, and anti-moisture, anti-mildew, and anti-salt-fog treatment, making it appropriate for outdoor field integration when the system is installed correctly.

Q: What physical size and weight should I plan for?

Shell dimensions are 187 × 185 × 70mm (±1mm), and product weight is about 2.2kg. Confirm connector routing and installation clearance during airframe integration.

Q: What protections are included?

The module includes input over/under-voltage protection, reverse-connection protection, output overvoltage protection, overcurrent protection, short-circuit protection, and over-temperature protection, all intended to improve system-level reliability.

Q: What are the storage conditions?

When not in use, the product should be stored in its packaging box at -10°C to 40°C with relative humidity not exceeding 80%, away from corrosive gases, strong vibration, impact, and strong magnetic fields.

Related Products

WF-1000S60-4K (regulated 60Vdc, 4KW)  |  WF-750S50-6K (high-voltage onboard converter, 6KW class)  |  A7 (800S59, 6000W / 6800W peak, IP65)

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