Product Overview

The Kitefly WF-750S50-6K (WF6) is a regulated DC-DC onboard power module engineered for tethered UAV systems that require stable 50V-class output at higher power levels. Converting high-voltage DC input (600-750Vdc) to a fixed 50Vdc output at up to 6000W, it is designed for tethered lighting systems, surveillance drones, industrial UAV platforms, and other applications where compact size, low weight, and reliable continuous power are critical.

The module combines an aluminum alloy enclosure, integrated fan cooling, and >=96% conversion efficiency in a compact package. Rated output is 50 +/-0.5Vdc with voltage regulation within +/-1% and ripple/noise <=700mVp-p at rated load. The enclosure is rated IP65, and the design includes anti-moisture, anti-mildew, and anti-salt-fog protection for outdoor deployment in demanding field environments.

Key Specifications

Why Choose the WF6 for Your Tethered Drone System?

The WF-750S50-6K addresses a common tethered power requirement: stable 50Vdc output at true 6kW continuous power. Unlike step-ratio converter modules whose output changes with input voltage, the WF6 maintains regulated output across the 600-750Vdc input range. That makes it well suited to tethered drone systems, 50V bus architectures, and airborne payloads that benefit from controlled voltage delivery - including lighting payloads, surveillance platforms, and industrial UAV electronics.

With 6000W rated power and 7000W peak capability, the WF6 supports higher-load airborne systems without sacrificing packaging efficiency. The module remains compact at 248 x 107 x 75mm and <=1.4kg, while the aluminum enclosure, IP65 protection level, and three-proof treatment help it perform reliably in outdoor, humid, and salt-fog-prone environments. For long-duration tethered operation, it combines regulated power quality, practical field durability, and straightforward integration with compatible high-voltage ground stations.

Protection & Safety Features

• Input undervoltage protection: 580-600Vdc (hysteresis >10V)

• Input overvoltage protection: 770-790Vdc (hysteresis >15V)

• Output overvoltage protection: 54-56Vdc (auto recovery)

• Output overcurrent protection: 140-160A (auto recovery)

• Output short-circuit protection: long-term short-circuit resistant (auto recovery)

• Over-temperature protection: protection at 75C, recovery at 65C (enclosure temperature)

• Input-output dielectric strength: 3000Vdc / 10mA / 1min; no breakdown or flashover

• Input-enclosure dielectric strength: 2000Vdc / 10mA / 1min

• Output-enclosure dielectric strength: 1000Vdc / 10mA / 1min

• Insulation resistance: >=10Mohm @500Vdc

• PCB flammability: V-0 per GB4943.1-2011; insulation cables per GB/T18380.12-2008

• System noise <=60dB(A); anti-moisture, anti-mildew, and anti-salt-fog design per GB/T 4797.6 Table 9

Frequently Asked Questions

Q: What type of ground stations are compatible with the WF6?

The WF6 accepts 600-750Vdc input and requires a ground station capable of delivering >=6000W within that voltage range. It is intended for high-voltage Kitefly tethered ground power systems; contact our team with your ground station model and output specifications to confirm compatibility and optimize system matching.

Q: Is the WF6 a regulated output module?

Yes. The WF6 is a voltage-regulated DC-DC module. Its rated output is held at 50 +/-0.5Vdc, with regulation accuracy of +/-1%, instead of tracking input voltage directly. This makes it a better fit for applications where airborne electronics or payloads require tighter voltage control.

Q: Is the WF6 suitable for 12S-class drone platforms?

It can be suitable for 12S-class platforms and other 50V bus systems, because 12S battery architectures typically operate near this voltage level. However, final compatibility depends on your drone platform's permitted input range, power draw, and integration method. Confirm with your drone manufacturer before installation.

Q: What is the difference between rated power and peak power?

The WF6 delivers 6000W continuously under its specified operating conditions, while 7000W refers to short-duration peak capability. In practical system design, continuous load should be matched to the 6000W rated value, with peak power treated as transient headroom rather than normal operating power.

Q: Why does the drone still need a fully charged battery during tethered flight?

The drone must still carry a fully charged battery during tethered operation. If ground power is interrupted, the system switches to battery power so the aircraft can land safely. The onboard module works together with the battery; it does not replace the battery's safety function.

Q: Is the WF6 suitable for outdoor deployment?

Yes. The WF6 uses an aluminum alloy enclosure with IP65 protection, integrated fan cooling, and anti-moisture, anti-mildew, and anti-salt-fog treatment. These features make it suitable for outdoor field deployment, provided the full system is installed correctly and the environment remains within the stated operating conditions.

Q: What is the altitude rating of the WF6?

The WF6 is rated for operation from 0 to 3000m altitude. For high-altitude deployments, verify thermal and electrical performance within your full aircraft and tethered power system before field use.

Q: What is the lead time and availability?

The WF6 is available in stock for immediate shipment. If current stock is insufficient for your order, lead time is typically 2-3 weeks. Contact Ms. Susy for real-time availability, integration support, and project pricing.

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